source: trunk/src/plot_field.m @ 109

Last change on this file since 109 was 109, checked in by sommeria, 13 years ago

merge_proj.m, proj_field.m: bugs repaired merging of images
plot_field.m: minor cleaning
imadoc2struct: introduce the possibility of readying the calibration point coordinates
sub_field.m:bugs repaired
geometry_calib, create_grid: introduction of new calibration methods, improvement of detect_grid

File size: 49.5 KB
Line 
1%'plot_field': plot any field with the structure defined in the uvmat package
2%------------------------------------------------------------------------
3%
4%  This function is used by uvmat to plot fields. It automatically chooses the representation
5% appropriate to the input field structure:
6%     2D vector fields are represented by arrows, 2D scalar fiedlds by grey scale images or contour plots, 1D fields are represented by usual plot with (abscissa, ordinate).
7%  The input field structure is first tested by check_field_structure.m,
8%  then split into blocks of related variables  by find_field_indices.m.
9%  The dimensionality of each block is obtained  by this fuction
10%  considering the presence of variables with the attribute .Role='coord_x'
11%  and/or coord_y and/or coord_z (case of unstructured coordinates), or
12%  dimension variables (case of matrices).
13%
14% function [PlotType,PlotParamOut,haxes]= plot_field(Data,haxes,PlotParam,htext,PosColorbar)
15%
16% OUPUT:
17% PlotType: type of plot: 'text','line'(curve plot),'plane':2D view,'volume'
18% PlotParamOut: structure, representing the updated  plotting parameters, in case of automatic scaling
19% haxes: handle of the plotting axis, when a new figure is created.
20%
21%INPUT
22%    Data:   structure describing the field to plot
23%         (optional) .ListGlobalAttribute: cell listing the names of the global attributes
24%                    .Att_1,Att_2... : values of the global attributes
25%         (requested)  .ListVarName: list of variable names to select (cell array of  char strings {'VarName1', 'VarName2',...} )
26%         (requested)  .VarDimName: list of dimension names for each element of .ListVarName (cell array of string cells)
27%                      .VarAttribute: cell of attributes for each element of .ListVarName (cell array of structures of the form VarAtt.key=value)
28%         (requested) .Var1, .Var2....: variables (Matlab arrays) with names listed in .ListVarName
29
30%            Variable attribute .Role :
31%    The only variable attribute used for plotting purpose is .Role which can take
32%    the values
33%       Role = 'scalar':  (default) represents a scalar field
34%            = 'coord_x', 'coord_y',  'coord_z': represents a separate set of
35%                        unstructured coordinate x, y  or z
36%            = 'vector': represents a vector field whose number of components
37%                is given by the last dimension (called 'nb_dim')
38%            = 'vector_x', 'vector_y', 'vector_z'  :represents the x, y or z  component of a vector 
39%            = 'warnflag' : provides a warning flag about the quality of data in a 'Field', default=0, no warning
40%            = 'errorflag': provides an error flag marking false data,
41%                   default=0, no error. Different non zero values can represent different criteria of elimination.
42%
43%
44%         additional elements characterizing the projection object (should not be necessary)--
45%            Data.Style : style of projection object
46%            Data.XObject,.YObject: set of coordinates defining the object position;
47%            Data.ProjMode=type of projection ;
48%            Data.ProjAngle=angle of projection;
49%            Data.DX,.DY,.DZ=increments;
50%            Data.MaxY,MinY: min and max Y
51
52%   haxes: handle of the plotting axes to update with the new plot. If this input is absent or not a valid axes handle, a new figure is created.
53%
54%   PlotParam: parameters for plotting, as read on the uvmat interface (by function 'read_plot_param.m')
55%     .FixedLimits:=0 (default) adjust axes limit to the X,Y data, =1: preserves the previous axes limits
56%     .Auto_xy: =0 (default): kepp 1 to 1 aspect ratio for x and y scales, =1: automatic adjustment of the graph
57%            --scalars--
58%    .Scalar.MaxA: upper bound (saturation color) for the scalar representation, max(field) by default
59%    .Scalar.MinA: lower bound (saturation) for the scalar representation, min(field) by default
60%    .Scalar.AutoScal: =1 (default) lower and upper bounds of the scalar representation set to the min and max of the field
61%               =0 lower and upper bound imposed by .AMax and .MinA
62%    .Scalar.BW= 1 black and white representation imposed, =0 by default.
63%    .Scalar.Contours= 1: represent scalars by contour plots (Matlab function 'contour'); =0 by default
64%    .IncrA : contour interval
65%            -- vectors--
66%    .Vectors.VecScale: scale for the vector representation
67%    .Vectors.AutoVec: =0 (default) automatic length for vector representation, =1: length set by .VecScale
68%    .Vectors.HideFalse= 0 (default) false vectors represented in magenta, =1: false vectors not represented;
69%    .Vectors.HideWarning= 0 (default) vectors marked by warnflag~=0 marked in black, 1: no warning representation;
70%    .Vectors.decimate4 = 0 (default) all vectors reprtesented, =1: half of  the vectors represented along each coordinate
71%         -- vector color--
72%    .Vectors.ColorCode= 'black','white': imposed color  (default ='blue')
73%                        'rgb', : three colors red, blue, green depending
74%                        on thresholds .colcode1 and .colcode2 on the input  scalar value (C)
75%                        'brg': like rgb but reversed color order (blue, green, red)
76%                        '64 colors': continuous color from blue to red (multijet)
77%    .Vectors.colcode1 : first threshold for rgb, first value for'continuous'
78%    .Vectors.colcode2 : second threshold for rgb, last value (saturation) for 'continuous'
79%    .Vectors.FixedCbounds;  =0 (default): the bounds on C representation are min and max, =1: they are fixed by .Minc and .MaxC
80%    .Vectors.MinC = imposed minimum of the scalar field used for vector color;
81%    .Vectors.MaxC = imposed maximum of the scalar field used for vector color;
82%
83%
84% PosColorbar: if not empty, display a colorbar for B&W images
85%               imposed position of the colorbar (ex [0.821 0.471 0.019 0.445])
86
87%AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
88%  Copyright Joel Sommeria, 2008, LEGI / CNRS-UJF-INPG, sommeria@coriolis-legi.org.
89%AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
90%     This file is part of the toolbox UVMAT.
91%
92%     UVMAT is free software; you can redistribute it and/or modify
93%     it under the terms of the GNU General Public License as published by
94%     the Free Software Foundation; either version 2 of the License, or
95%     (at your option) any later version.
96%
97%     UVMAT is distributed in the hope that it will be useful,
98%     but WITHOUT ANY WARRANTY; without even the implied warranty of
99%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
100%     GNU General Public License (file UVMAT/COPYING.txt) for more details.
101%AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
102
103function [PlotType,PlotParamOut,haxes]= plot_field(Data,haxes,PlotParam,htext,PosColorbar)
104% TODO:
105% use htext: handles of the text edit box (uicontrol)
106% introduce PlotParam.Hold: 'on' or 'off' (for curves)
107 
108%default output
109if ~exist('PlotParam','var'),PlotParam=[];end;
110if ~exist('htext','var'),htext=[];end;
111if ~exist('PosColorbar','var'),PosColorbar=[];end;
112PlotType='text'; %default
113PlotParamOut=PlotParam;%default
114
115% check input structure
116[Data,errormsg]=check_field_structure(Data);
117
118if ~isempty(errormsg)
119    msgbox_uvmat('ERROR',['input of plot_field/check_field_structure: ' errormsg])
120    display(['input of plot_field/check_field_structure:: ' errormsg])
121    return
122end
123
124testnewfig=1;%test to create a new figure (default)
125testzoomaxes=0;%test for the existence of a zoom secondary figure attached to the plotting axes
126if exist('haxes','var')
127    if ishandle(haxes)
128        if isequal(get(haxes,'Type'),'axes')
129            axes(haxes)
130            testnewfig=0;
131            AxeData=get(haxes,'UserData');
132            if isfield(AxeData,'ZoomAxes')&& ishandle(AxeData.ZoomAxes)
133                if isequal(get(AxeData.ZoomAxes,'Type'),'axes')
134                    testzoomaxes=1;
135                    zoomaxes=AxeData.ZoomAxes;
136                end
137            end
138        end
139    end
140end
141if testnewfig% create a new figure and axes if the plotting axes does not exist
142    hfig=figure;
143%     if isfield(Data,'IndexObj') && isfield(Data,'Style') && isfield(Data,'ProjMode')
144%         figname=[num2str(Data.IndexObj) '-' Data.Style];
145%         set(hfig,'Name',figname)
146%     end
147%     testhandle=0;
148    if isfield(PlotParam,'text_display_1') && ishandle(PlotParam.text_display_1)
149        set(hfig,'UserData',PlotParam)
150%         testhandle=1;
151    end
152    set(hfig,'Units','normalized')
153    set(hfig,'WindowButtonDownFcn','mouse_down')
154    %set(hfig,'WindowButtonMotionFcn',{'mouse_motion',PlotParam})%set mouse action function
155    set(hfig,'WindowButtonMotionFcn','mouse_motion')%set mouse action function
156    set(hfig,'WindowButtonUpFcn','mouse_up')%set mouse action function
157    haxes=axes;
158    set(haxes,'position',[0.13,0.2,0.775,0.73])
159else
160    hstack=findobj(allchild(0),'Type','figure');%current stack order of figures in matlab
161end
162if isfield(PlotParam,'text_display_1') && ishandle(PlotParam.text_display_1)
163    PlotParam=read_plot_param(PlotParam);   
164end
165if testnewfig
166  PlotParam.NextPlot='add'; %parameter for plot_profile and plot_hist
167end
168if isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1)
169    set(haxes,'DataAspectRatioMode','auto')%automatic aspect ratio
170end
171
172% check the cells of fields :
173% testnbdim=1;
174[CellVarIndex,NbDim,VarType,errormsg]=find_field_indices(Data);
175
176if ~isempty(errormsg)
177    msgbox_uvmat('ERROR',['input of plot_field/find_field_indices: ' errormsg])
178    display(['input of plot_field: ' errormsg])
179    return
180end
181if ~isfield(Data,'NbDim') %& ~isfield(Data,'Style')%determine the space dimensionb if not defined: choose the kind of plot
182    [Data.NbDim]=max(NbDim);
183end
184if isequal(Data.NbDim,0)
185        AxeData=plot_text(Data,htext);
186        PlotType='text';
187elseif isequal(Data.NbDim,1)
188    [AxeData,haxes]=plot_profile(Data,CellVarIndex,VarType,haxes,PlotParam);%
189    if testzoomaxes
190        [AxeData,zoomaxes,PlotParamOut]=plot_profile(Data,CellVarIndex,VarType,zoomaxes,PlotParam);
191        AxeData.ZoomAxes=zoomaxes;
192    end
193    PlotType='line';
194elseif isequal(Data.NbDim,2)
195    ind_select=find(NbDim>=2);
196    if numel(ind_select)>2
197        msgbox_uvmat('ERROR','more than two fields to map')
198        display('more than two fields to map')
199        return
200    end
201    [AxeData,haxes,PlotParamOut,PlotType]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),haxes,PlotParam,htext,PosColorbar);
202    if testzoomaxes
203        [AxeData,zoomaxes,PlotParamOut]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),zoomaxes,PlotParam,1,PosColorbar);
204        %AxeData.ZoomAxes=zoomaxes;
205        Data.ZoomAxes=zoomaxes;
206    end
207elseif isequal(Data.NbDim,3)
208    msgbox_uvmat('ERROR','volume plot not implemented yet')
209    return
210% else
211%     testnbdim=0;
212end
213
214%display (or delete) error message
215htext=findobj(haxes,'Tag','hTxt');
216if isfield(Data,'Txt')
217    if isempty(htext)
218        Xlim=get(haxes,'XLim');
219        Ylim=get(haxes,'YLim');
220        htext=text(Xlim(1),(Ylim(1)+Ylim(2))/2,Data.Txt,'Tag','hTxt','Color','r');
221        set(htext,'Interpreter','none')
222    else
223        set(htext,'String',Data.Txt)
224    end
225elseif ~isempty(htext)
226    delete(htext)
227end
228
229% set graph aspect ratio
230if isfield(AxeData,'Mesh')
231    Data.Mesh=AxeData.Mesh;
232end
233
234%set(haxes,'UserData',AxeData)
235set(haxes,'UserData',Data)
236if ~testnewfig
237set(0,'Children',hstack);%put back the initial figure stack after plot creation
238%set(haxes,'Tag','uvmat');
239end
240
241
242%-------------------------------------------------------------------
243function hdisplay=plot_text(FieldData,hdisplay_in)
244%-------------------------------------------------------------------
245if exist('hdisplay_in','var') && ~isempty(hdisplay_in) && ishandle(hdisplay_in) && isequal(get(hdisplay_in,'Type'),'uicontrol')
246    hdisplay=hdisplay_in;
247else
248    figure;%create new figure
249    hdisplay=uicontrol('Style','edit', 'Units','normalized','Position', [0 0 1 1],'Max',2,'FontName','monospaced');
250end
251   
252ff=fields(FieldData);%list of field names
253vv=struct2cell(FieldData);%list of field values
254
255for icell=1:length(vv)
256    Tabcell{icell,1}=ff{icell};
257    ss=vv{icell};
258    sizss=size(ss);
259    if isnumeric(ss)
260        if sizss(1)<=1 && length(ss)<5
261            displ{icell}=num2str(ss);
262        else
263            displ{icell}=[class(ss) ', size ' num2str(size(ss))];
264        end
265    elseif ischar(ss)
266        displ{icell}=ss;
267    elseif iscell(ss)
268        sizcell=size(ss);
269        if sizcell(1)==1 && length(sizcell)==2 %line cell
270           ssline='{''';
271           for icolumn=1:sizcell(2)
272               if isnumeric(ss{icolumn})
273                   if size(ss{icolumn},1)<=1 && length(ss{icolumn})<5
274                      sscolumn=num2str(ss{icolumn});%line vector
275                   else
276                      sscolumn=[class(ss{icolumn}) ', size ' num2str(size(ss{icolumn}))];
277                   end
278               elseif ischar(ss{icolumn})
279                   sscolumn=ss{icolumn};
280               else
281                   sscolumn=class(ss{icolumn});
282               end
283               if icolumn==1
284                   ssline=[ssline sscolumn];
285               else
286                   ssline=[ssline ''',''' sscolumn];
287               end
288           end
289           displ{icell}=[ssline '''}'];
290        else
291           displ{icell}=[class(ss) ', size ' num2str(sizcell)];
292        end
293    else
294        displ{icell}=class(ss);
295    end
296    Tabcell{icell,2}=displ{icell};
297end
298Tabchar=cell2tab(Tabcell,': ');
299set(hdisplay,'String', Tabchar)
300
301
302%-------------------------------------------------------------------
303function [AxeData,haxes]=plot_profile(data,CellVarIndex,VarType,haxes,PlotParam)
304%-------------------------------------------------------------------
305%axes(haxes)
306hfig=get(haxes,'parent');
307AxeData=data;
308
309ColorOrder=[1 0 0;0 0.5 0;0 0 1;0 0.75 0.75;0.75 0 0.75;0.75 0.75 0;0.25 0.25 0.25];
310set(haxes,'ColorOrder',ColorOrder)
311if isfield(PlotParam,'NextPlot')
312    set(haxes,'NextPlot',PlotParam.NextPlot)
313end
314% adjust the size of the plot to include the whole field,
315if isfield(PlotParam,'FixedLimits') && isequal(PlotParam.FixedLimits,1)  %adjust the graph limits*
316    set(haxes,'XLimMode', 'manual')
317    set(haxes,'YLimMode', 'manual')
318else
319    set(haxes,'XLimMode', 'auto')
320    set(haxes,'YLimMode', 'auto')
321end
322legend_str={};
323
324%initiates string of the plot command
325plotstr='hhh=plot(';
326textmean={};
327% abscissa_name='';
328coord_x_index=[];
329test_newplot=1;
330% hh=findobj(haxes,'tag','plot_line');
331% num_curve=numel(hh);
332% icurve=0;
333for icell=1:length(CellVarIndex)
334    testfalse=0;
335    VarIndex=CellVarIndex{icell};%  indices of the selected variables in the list data.ListVarName
336    DimCell=data.VarDimName{VarIndex(1)};
337    if ischar(DimCell)
338        DimCell={DimCell};
339    end
340    XName=DimCell{1}; %first dimension considered as abscissa
341    if ~isempty(VarType{icell}.coord_x)
342        coord_x_index=VarType{icell}.coord_x;
343    else
344        coord_x_index_cell=VarType{icell}.coord(1);
345        if isequal(coord_x_index_cell,0)
346            continue  % the cell has no abscissa, skip it
347        end
348        if ~isempty(coord_x_index)&&~isequal(coord_x_index_cell,coord_x_index)
349            continue %all the selected variables must have the same first dimension
350        else
351            coord_x_index=coord_x_index_cell;
352        end
353    end
354    testplot=ones(size(data.ListVarName));%default test for plotted variables
355    testcoordvar=0;
356    charplot_0='''-''';%default
357    if isfield(data,'ObjectProjMode')&& isequal(data.ObjectProjMode,'projection')
358        charplot_0='+';
359    end
360    xtitle=''; 
361   
362    xtitle=data.ListVarName{coord_x_index};
363    eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
364    if isfield(data,'VarAttribute')&& numel(data.VarAttribute)>=coord_x_index && isfield(data.VarAttribute{coord_x_index},'units')
365         xtitle=[xtitle '(' data.VarAttribute{coord_x_index}.units ')'];
366    end
367    eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
368%     testcoordvar=1;
369    testplot(coord_x_index)=0;
370    if ~isempty(VarType{icell}.ancillary')
371            testplot(VarType{icell}.ancillary)=0;
372    end
373    if ~isempty(VarType{icell}.warnflag')
374            testplot(VarType{icell}.warnflag)=0;
375    end
376 
377    if isfield(data,'VarAttribute')
378        VarAttribute=data.VarAttribute;
379        for ivar=1:length(VarIndex)
380             if length(VarAttribute)>=VarIndex(ivar) && isfield(VarAttribute{VarIndex(ivar)},'long_name')
381                 plotname{VarIndex(ivar)}=VarAttribute{VarIndex(ivar)}.long_name;
382             else
383                 plotname{VarIndex(ivar)}=data.ListVarName{VarIndex(ivar)};%name for display in plot A METTRE
384             end
385        end
386    end 
387%     test_newplot=0;%default
388%     if num_curve>=icurve+numel(find(testplot(VarIndex)))%update existing curves
389%         if ~isempty(VarType{icell}.discrete')
390%             charplot_0='+';
391%             LineStyle='none';
392%         else
393%             charplot_0='none';
394%             LineStyle='-';
395%         end
396%         for ivar=1:length(VarIndex)
397%             if testplot(VarIndex(ivar))
398%                 icurve=icurve+1;
399%                 VarName=data.ListVarName{VarIndex(ivar)};
400%                 eval(['data.' VarName '=squeeze(data.' VarName ');'])
401%                 set(hh(icurve),'LineStyle',LineStyle)
402%                 set(hh(icurve),'Marker',charplot_0)
403%                 set(hh(icurve),'XData',coord_x{icell})
404%                 eval(['yy=data.' VarName ';'])
405%                 set(hh(icurve),'YData',yy);
406%             end
407%         end
408%     else% new plot
409        if ~isempty(VarType{icell}.discrete')
410            charplot_0='''+''';
411        else
412            charplot_0='''-''';
413        end
414        for ivar=1:length(VarIndex)
415            if testplot(VarIndex(ivar))
416                VarName=data.ListVarName{VarIndex(ivar)};
417                eval(['data.' VarName '=squeeze(data.' VarName ');'])
418%                 if isequal(VarName,'A')
419%                     charplot='''-''';
420%                 else
421%                     charplot=charplot_0;
422%                 end
423                plotstr=[plotstr 'coord_x{' num2str(icell) '},data.' VarName ',' charplot_0 ','];
424                eval(['nbcomponent2=size(data.' VarName ',2);']);
425                eval(['nbcomponent1=size(data.' VarName ',1);']);
426                if numel(coord_x{icell})==2
427                    coord_x{icell}=linspace(coord_x{icell}(1),coord_x{icell}(2),nbcomponent1);
428                end
429                eval(['varmean=mean(double(data.' VarName '));']);%mean value
430                textmean=[textmean; {[VarName 'mean= ' num2str(varmean,4)]}];
431                if nbcomponent1==1|| nbcomponent2==1
432                    legend_str=[legend_str {VarName}]; %variable with one component
433                else  %variable with severals  components
434                    for ic=1:min(nbcomponent1,nbcomponent2)
435                        legend_str=[legend_str [VarName '_' num2str(ic)]]; %variable with severals  components
436                    end                                                   % labeled by their index (e.g. color component)
437                end
438            end
439        end
440%     end
441end
442if test_newplot && ~isequal(plotstr,'hhh=plot(')
443    plotstr=[plotstr '''tag'',''plot_line'');'];
444                %execute plot (instruction  plotstr) 
445    eval(plotstr)
446   
447                %%%%%
448    grid(haxes, 'on')
449    hxlabel=xlabel(xtitle);
450    set(hxlabel,'Interpreter','none')% desable tex interpreter
451    if length(legend_str)>=1
452        hylabel=ylabel(legend_str{end});
453        set(hylabel,'Interpreter','none')% desable tex interpreter
454    end
455    if ~isempty(legend_str)
456        hlegend=findobj(hfig,'Tag','legend');
457        if isempty(hlegend)
458            hlegend=legend(legend_str);
459            txt=ver;
460            Release=txt(1).Release;
461            relnumb=str2num(Release(3:4));
462            if relnumb >= 14
463                set(hlegend,'Interpreter','none')% desable tex interpreter
464            end
465        else
466            legend_old=get(hlegend,'String');
467            if isequal(size(legend_old,1),size(legend_str,1))&&~isequal(legend_old,legend_str)
468                set(hlegend,'String',[legend_old legend_str]);
469            end
470        end
471    end
472    title_str='';
473    if isfield(data,'filename')
474       [Path, title_str, ext]=fileparts(data.filename);
475       title_str=[title_str ext];
476    end
477    if isfield(data,'Action')
478        if ~isequal(title_str,'')
479            title_str=[title_str ', '];
480        end
481        title_str=[title_str data.Action];
482    end
483    htitle=title(title_str);
484    txt=ver;
485    Release=txt(1).Release;
486    relnumb=str2num(Release(3:4));
487    if relnumb >= 14
488        set(htitle,'Interpreter','none')% desable tex interpreter
489    end
490    % A REPRENDRE Mean
491%         hlist=findobj(gcf,'Style','listbox','Tag','liststat');
492%         if isempty(hlist)
493%             'text'
494%             textmean
495%             set(gca,'position',[0.13,0.2,0.775,0.73])
496%             uicontrol('Style','popupmenu','Position',[20 20 200 20],'String',textmean,'Tag','liststat');
497%         else
498%             set(hlist(1),'String',textmean)
499%         end
500end
501
502
503%-------------------------------------------------------------------
504function [AxeData,haxes,PlotParamOut,PlotType]=plot_plane(Data,CellVarIndex,VarTypeCell,haxes,PlotParam,htext,PosColorbar)
505%-------------------------------------------------------------------
506grid(haxes, 'off')
507%default plotting parameters
508PlotType='plane';%default
509if ~exist('PlotParam','var')
510    PlotParam=[];
511end
512if ~isfield(PlotParam,'Scalar')
513    PlotParam.Scalar=[];
514end
515if ~isfield(PlotParam,'Vectors')
516    PlotParam.Vectors=[];
517end
518PlotParamOut=PlotParam;%default
519
520%plotting axes
521hfig=get(haxes,'parent');
522hcol=findobj(hfig,'Tag','Colorbar'); %look for colorbar axes
523hima=findobj(haxes,'Tag','ima');% search existing image in the current axes
524AxeData=get(haxes,'UserData'); %default
525if ~isstruct(AxeData)% AxeData must be a structure
526    AxeData=[];
527end
528AxeData.NbDim=2;
529if isfield(Data,'ObjectCoord')
530    AxeData.ObjectCoord=Data.ObjectCoord;
531end
532
533test_ima=0; %default: test for image or map plot
534test_vec=0; %default: test for vector plots
535test_black=0;
536test_false=0;
537test_C=0;
538XName='';
539x_units='';
540YName='';
541y_units='';
542for icell=1:length(CellVarIndex) % length(CellVarIndex) =1 or 2 (from the calling function)
543    VarType=VarTypeCell{icell};
544    ivar_X=VarType.coord_x; % defines (unique) index for the variable representing unstructured x coordinate (default =[])
545    ivar_Y=VarType.coord_y; % defines (unique)index for the variable representing unstructured y coordinate (default =[])
546    ivar_U=VarType.vector_x; % defines (unique) index for the variable representing x vector component (default =[])
547    ivar_V=VarType.vector_y; % defines (unique) index for the variable representing y vector component (default =[])
548    ivar_C=[VarType.scalar VarType.image VarType.color VarType.ancillary]; %defines index (indices) for the scalar or ancillary fields
549    if numel(ivar_C)>1
550        msgbox_uvmat('ERROR','error in plot_field: too many scalar inputs')
551        return
552    end
553    ivar_F=VarType.warnflag; %defines index (unique) for warning flag variable
554    ivar_FF=VarType.errorflag; %defines index (unique) for error flag variable
555    ind_coord=find(VarType.coord);
556    if numel(ind_coord)==2
557        VarType.coord=VarType.coord(ind_coord);
558    end
559%     idim_Y=[]; 
560    test_grid=0;
561    if ~isempty(ivar_U) && ~isempty(ivar_V)% vector components detected
562        if test_vec
563            msgbox_uvmat('ERROR','error in plot_field: attempt to plot two vector fields')
564            return
565        else
566            test_vec=1;
567            eval(['vec_U=Data.' Data.ListVarName{ivar_U} ';'])
568            eval(['vec_V=Data.' Data.ListVarName{ivar_V} ';'])
569            if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)     
570                eval(['vec_X=Data.' Data.ListVarName{ivar_X} ';'])
571                eval(['vec_Y=Data.' Data.ListVarName{ivar_Y} ';'])
572            elseif numel(VarType.coord)==2 & VarType.coord~=[0 0];%coordinates defines by dimension variables
573                eval(['y=Data.' Data.ListVarName{VarType.coord(1)} ';'])
574                eval(['x=Data.' Data.ListVarName{VarType.coord(2)} ';'])
575                if numel(y)==2 % y defined by first and last values on aregular mesh
576                    y=linspace(y(1),y(2),size(vec_U,1));
577                end
578                if numel(x)==2 % y defined by first and last values on aregular mesh
579                    x=linspace(x(1),x(2),size(vec_U,2));
580                end
581                [vec_X,vec_Y]=meshgrid(x,y); 
582            else
583                msgbox_uvmat('ERROR','error in plot_field: invalid coordinate definition for vector field')
584                return
585            end
586            if ~isempty(ivar_C)
587                 eval(['vec_C=Data.' Data.ListVarName{ivar_C} ';']) ;
588                 vec_C=reshape(vec_C,1,numel(vec_C));
589                 test_C=1;
590            end
591            if ~isempty(ivar_F)%~(isfield(PlotParam.Vectors,'HideWarning')&& isequal(PlotParam.Vectors.HideWarning,1))
592                if test_vec
593                    eval(['vec_F=Data.' Data.ListVarName{ivar_F} ';']) % warning flags for  dubious vectors
594                    if  ~(isfield(PlotParam.Vectors,'HideWarning') && isequal(PlotParam.Vectors.HideWarning,1))
595                        test_black=1;
596                    end
597                end
598            end
599            if ~isempty(ivar_FF) %&& ~test_false
600                if test_vec% TODO: deal with FF for structured coordinates
601                    eval(['vec_FF=Data.' Data.ListVarName{ivar_FF} ';']) % flags for false vectors
602                end
603            end
604        end
605    elseif ~isempty(ivar_C) %scalar or image
606        if test_ima
607             msgbox_uvmat('ERROR','attempt to plot two scalar fields or images')
608            return
609        end
610        eval(['A=squeeze(Data.' Data.ListVarName{ivar_C} ');']) ;% scalar represented as color image
611        test_ima=1;
612        if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)
613            XName=Data.ListVarName{ivar_X};
614            YName=Data.ListVarName{ivar_Y};
615            eval(['AX=Data.' XName ';'])
616            eval(['AY=Data.' YName ';'])
617            [A,AX,AY]=proj_grid(AX',AY',A',[],[],'np>256');  % interpolate on a grid 
618            if isfield(Data,'VarAttribute')
619                if numel(Data.VarAttribute)>=ivar_X && isfield(Data.VarAttribute{ivar_X},'units')
620                    x_units=['(' Data.VarAttribute{ivar_X}.units ')'];
621                end
622                if numel(Data.VarAttribute)>=ivar_Y && isfield(Data.VarAttribute{ivar_Y},'units')
623                    y_units=['(' Data.VarAttribute{ivar_Y}.units ')'];
624                end
625            end       
626        elseif numel(VarType.coord)==2 %structured coordinates
627            XName=Data.ListVarName{VarType.coord(2)};
628            YName=Data.ListVarName{VarType.coord(1)};
629            eval(['AY=Data.' Data.ListVarName{VarType.coord(1)} ';'])
630            eval(['AX=Data.' Data.ListVarName{VarType.coord(2)} ';'])
631            test_interp_X=0; %default, regularly meshed X coordinate
632            test_interp_Y=0; %default, regularly meshed Y coordinate
633            if isfield(Data,'VarAttribute')
634                if numel(Data.VarAttribute)>=VarType.coord(2) && isfield(Data.VarAttribute{VarType.coord(2)},'units')
635                    x_units=['(' Data.VarAttribute{VarType.coord(2)}.units ')'];
636                end
637                if numel(Data.VarAttribute)>=VarType.coord(1) & isfield(Data.VarAttribute{VarType.coord(1)},'units')
638                    y_units=['(' Data.VarAttribute{VarType.coord(1)}.units ')'];
639                end
640            end 
641            if numel(AY)>2
642                DAY=diff(AY);
643                DAY_min=min(DAY);
644                DAY_max=max(DAY);
645                if sign(DAY_min)~=sign(DAY_max);% =1 for increasing values, 0 otherwise
646                     errormsg=['errror in plot_field.m: non monotonic dimension variable # ' ListVarName{VarType.coord(1)} ];
647                      return
648                end
649                test_interp_Y=(DAY_max-DAY_min)> 0.0001*abs(DAY_max);
650            end
651            if numel(AX)>2
652                DAX=diff(AX);
653                DAX_min=min(DAX);
654                DAX_max=max(DAX);
655                if sign(DAX_min)~=sign(DAX_max);% =1 for increasing values, 0 otherwise
656                     errormsg=['errror in plot_field.m: non monotonic dimension variable # ' ListVarName{VarType.coord(2)} ];
657                      return
658                end
659                test_interp_X=(DAX_max-DAX_min)> 0.0001*abs(DAX_max);
660            end 
661            if test_interp_Y         
662                npxy(1)=max([256 floor((AY(end)-AY(1))/DAY_min) floor((AY(end)-AY(1))/DAY_max)]);
663                yI=linspace(AY(1),AY(end),npxy(1));
664                if ~test_interp_X
665                    xI=linspace(AX(1),AX(end),size(A,2));%default
666                    AX=xI;
667                end
668            end
669            if test_interp_X 
670                npxy(1)=max([256 floor((AX(end)-AX(1))/DAX_min) floor((AX(end)-AX(1))/DAX_max)]);
671                xI=linspace(AX(1),AX(end),npxy(2));   
672                if ~test_interp_Y
673                   yI=linspace(AY(1),AY(end),size(A,1));
674                   AY=yI;
675                end
676            end
677            if test_interp_X || test_interp_Y               
678                [AX2D,AY2D]=meshgrid(AX,AY);
679                A=interp2(AX2D,AY2D,double(A),xI,yI');
680            end
681            AX=[AX(1) AX(end)];% keep only the lower and upper bounds for image represnetation
682            AY=[AY(1) AY(end)];
683        else
684            msgbox_uvmat('ERROR','error in plot_field: invalid coordinate definition ')
685            return
686        end
687          x_label=[Data.ListVarName{ivar_X} '(' x_units ')'];
688    end         
689end
690
691%%%%%%%%%%%%%%%%%%%%%   image or scalar plot %%%%%%%%%%%%%%%%%%%%%%%%%%
692
693if ~isfield(PlotParam.Scalar,'Contours')
694    PlotParam.Scalar.Contours=0; %default
695end
696PlotParamOut=PlotParam; %default
697if test_ima
698    % distinguish B/W and color images
699    np=size(A);%size of image
700    siz=numel(np);
701    if siz>3
702        msgbox_uvmat('ERROR',['unrecognized scalar type: ' num2str(siz) ' dimensions'])
703            return
704    end
705    if siz==3
706        if np(3)==1
707            siz=2;%B W image
708        elseif np(3)==3
709            siz=3;%color image
710        else
711             msgbox_uvmat('ERROR',['unrecognized scalar type: ' num2str(np(3)) ' color components'])
712            return
713        end
714    end
715    %set the color map
716    if isfield(PlotParam.Scalar,'BW')
717        BW=PlotParam.Scalar.BW; %test for BW gray scale images
718    else
719        BW=(siz==2) && (isa(A,'uint8')|| isa(A,'uint16'));% non color images represented in gray scale by default
720    end
721    if siz==2 %for black and white images
722        if ~isfield(PlotParam.Scalar,'AutoScal')
723            PlotParam.Scalar.AutoScal=0;%default
724        end
725        if ~isfield(PlotParam.Scalar,'MinA')
726            PlotParam.Scalar.MinA=[];%default
727        end
728        if ~isfield(PlotParam.Scalar,'MaxA')
729            PlotParam.Scalar.MaxA=[];%default
730        end
731        if isequal(PlotParam.Scalar.AutoScal,0)|isempty(PlotParam.Scalar.MinA)|~isa(PlotParam.Scalar.MinA,'double')  %correct if there is no numerical data in edit box
732            MinA=double(min(min(A)));
733        else
734            MinA=PlotParam.Scalar.MinA; 
735        end;
736        if isequal(PlotParam.Scalar.AutoScal,0)||isempty(PlotParam.Scalar.MaxA)||~isa(PlotParam.Scalar.MaxA,'double') %correct if there is no numerical data in edit box
737            MaxA=double(max(max(A)));
738        else
739            MaxA=PlotParam.Scalar.MaxA; 
740        end;
741        PlotParamOut.Scalar.MinA=MinA;
742        PlotParamOut.Scalar.MaxA=MaxA;
743        axes(haxes)
744        if isequal(PlotParam.Scalar.Contours,1)
745            if ~isempty(hima) & ishandle(hima)
746                delete(hima)
747            end
748            if ~isfield(PlotParam.Scalar,'IncrA')
749                PlotParam.Scalar.IncrA=NaN;
750            end
751            if isnan(PlotParam.Scalar.IncrA)% | PlotParam.Scalar.AutoScal==0
752                cont=colbartick(MinA,MaxA);
753                intercont=cont(2)-cont(1);%default
754                PlotParamOut.Scalar.IncrA=intercont;
755            else
756               intercont=PlotParam.Scalar.IncrA;
757            end
758            B=A;           
759            abscontmin=intercont*floor(MinA/intercont);
760            abscontmax=intercont*ceil(MaxA/intercont);
761            contmin=intercont*floor(min(min(B))/intercont);
762            contmax=intercont*ceil(max(max(B))/intercont);
763            cont_pos_plus=0:intercont:contmax;
764            cont_pos_min=double(contmin):intercont:-intercont;
765            cont_pos=[cont_pos_min cont_pos_plus];
766            sizpx=(AX(end)-AX(1))/(np(2)-1);
767            sizpy=(AY(1)-AY(end))/(np(1)-1);
768            x_cont=AX(1):sizpx:AX(end); % pixel x coordinates for image display
769            y_cont=AY(1):-sizpy:AY(end); % pixel x coordinates for image display
770            txt=ver;%version of Matlab
771            Release=txt(1).Release;
772            relnumb=str2num(Release(3:4));
773            if relnumb >= 14
774                    vec=linspace(0,1,(abscontmax-abscontmin)/intercont);%define a greyscale colormap with steps intercont
775                map=[vec' vec' vec'];
776                colormap(map);
777                [var,hcontour]=contour(x_cont,y_cont,B,cont_pos);       
778                set(hcontour,'Fill','on')
779                set(hcontour,'LineStyle','none')
780                hold on
781            end
782            [var_p,hcontour_p]=contour(x_cont,y_cont,B,cont_pos_plus,'k-');
783            hold on
784            [var_m,hcontour_m]=contour(x_cont,y_cont,B,cont_pos_min,':');
785            set(hcontour_m,'LineColor',[1 1 1])
786            hold off
787            caxis([abscontmin abscontmax])
788            colormap(map);
789        end
790        if ~isequal(PlotParam.Scalar.Contours,1) 
791            % rescale the grey levels with min and max, put a grey scale colorbar
792            B=A;
793            if BW
794                vec=linspace(0,1,255);%define a linear greyscale colormap
795                map=[vec' vec' vec'];
796                colormap(map);  %grey scale color map
797            else
798                colormap('default'); % standard faulse colors for div, vort , scalar fields
799            end
800        end
801    else %color images
802        axes(haxes)
803        if BW
804            B=uint16(sum(A,3));
805        else
806            B=uint8(A);
807        end
808        MinA=0;
809        MaxA=255;
810    end
811    if ~isequal(PlotParam.Scalar.Contours,1)
812        %interpolate to increase resolution
813        test_interp=1;
814        if max(np) <= 64
815            npxy=8*np;% increase the resolution 8 times
816        elseif max(np) <= 128
817            npxy=4*np;% increase the resolution 4 times
818        elseif max(np) <= 256
819            npxy=2*np;% increase the resolution 2 times
820        else
821            npxy=np;
822            test_interp=0; % no interpolation done
823        end
824        if test_interp==1%if we interpolate   
825            x=linspace(AX(1),AX(2),np(2));
826            y=linspace(AY(1),AY(2),np(1));
827            [X,Y]=meshgrid(x,y);
828            xi=linspace(AX(1),AX(2),npxy(2));
829            yi=linspace(AY(1),AY(2),npxy(1));
830            B = interp2(X,Y,double(B),xi,yi');
831        end       
832        if isempty(hima)
833            tag=get(haxes,'Tag');
834            if MinA<MaxA
835                hima=imagesc(AX,AY,B,[MinA MaxA]);
836            else
837                hima=imagesc(AX,AY,B,[MaxA-1 MaxA]);
838            end
839            set(hima,'Tag','ima','HitTest','off')
840            set(haxes,'Tag',tag);%preserve the axes tag (removed by image fct !!!)       
841        else
842            set(hima,'CData',B);
843            if MinA<MaxA
844                caxis([MinA MaxA])
845            else
846                caxis([MaxA-1 MaxA])
847            end
848            set(hima,'XData',AX);
849            set(hima,'YData',AY);
850        end
851    end
852    if ~isstruct(AxeData)
853        AxeData=[];
854    end
855    AxeData.A=A;
856    AxeData.AX=[AX(1) AX(end)];
857    AxeData.AY=[AY(1) AY(end)];
858    test_ima=1;
859    %display the colorbar code for B/W images if Poscolorbar not empty
860    if siz==2 && exist('PosColorbar','var')&& ~isempty(PosColorbar)
861        if isempty(hcol)||~ishandle(hcol)
862             hcol=colorbar;%create new colorbar
863        end
864        if length(PosColorbar)==4
865                 set(hcol,'Position',PosColorbar)           
866        end
867        YTick=0;%default
868        if MaxA>MinA
869            if isequal(PlotParam.Scalar.Contours,1)
870                colbarlim=get(hcol,'YLim');
871                scale_bar=(colbarlim(2)-colbarlim(1))/(abscontmax-abscontmin);               
872                YTick=cont_pos(2:end-1);
873                YTick_scaled=colbarlim(1)+scale_bar*(YTick-abscontmin);
874                set(hcol,'YTick',YTick_scaled);
875            elseif (isfield(PlotParam.Scalar,'BW') & isequal(PlotParam.Scalar.BW,1))|isa(A,'uint8')| isa(A,'uint16')%images
876                hi=get(hcol,'children');
877                if iscell(hi)%multiple images in colorbar
878                    hi=hi{1};
879                end
880                set(hi,'YData',[MinA MaxA])
881                set(hi,'CData',[1:256]')
882                set(hcol,'YLim',[MinA MaxA])
883                YTick=colbartick(MinA,MaxA);
884                set(hcol,'YTick',YTick)               
885            else
886                hi=get(hcol,'children');
887                if iscell(hi)%multiple images in colorbar
888                    hi=hi{1};
889                end
890                set(hi,'YData',[MinA MaxA])
891                set(hi,'CData',[1:64]')
892                YTick=colbartick(MinA,MaxA);
893                set(hcol,'YLim',[MinA MaxA])
894                set(hcol,'YTick',YTick)
895            end
896            set(hcol,'Yticklabel',num2str(YTick'));
897        end
898    elseif ishandle(hcol)
899        delete(hcol); %erase existing colorbar if not needed
900    end
901else%no scalar plot
902    if ~isempty(hima) && ishandle(hima)
903        delete(hima)
904    end
905    if ~isempty(hcol)&& ishandle(hcol)
906       delete(hcol)
907    end
908    AxeData.A=[];
909    AxeData.AX=[];
910    AxeData.AY=[];
911    PlotParamOut=rmfield(PlotParamOut,'Scalar');
912end
913
914%%%%%%%%%%%%%%%%%%%%%   vector plot %%%%%%%%%%%%%%%%%%%%%%%%%%
915if test_vec
916   %vector scale representation
917    if size(vec_U,1)==numel(vec_Y) && size(vec_U,2)==numel(vec_X); % x, y  coordinate variables
918        [vec_X,vec_Y]=meshgrid(vec_X,vec_Y);
919    end   
920    vec_X=reshape(vec_X,1,numel(vec_X));%reshape in matlab vectors
921    vec_Y=reshape(vec_Y,1,numel(vec_Y));
922    vec_U=reshape(vec_U,1,numel(vec_U));
923    vec_V=reshape(vec_V,1,numel(vec_V));
924    MinMaxX=max(vec_X)-min(vec_X);
925    MinMaxY=max(vec_Y)-min(vec_Y);
926    AxeData.Mesh=sqrt((MinMaxX*MinMaxY)/length(vec_X));
927    if  ~isfield(PlotParam.Vectors,'AutoVec') || isequal(PlotParam.Vectors.AutoVec,0)|| ~isfield(PlotParam.Vectors,'VecScale')...
928               ||isempty(PlotParam.Vectors.VecScale)||~isa(PlotParam.Vectors.VecScale,'double') %automatic vector scale
929        scale=[];
930        if test_false %remove false vectors
931            indsel=find(AxeData.FF==0);%indsel =indices of good vectors
932        else     
933            indsel=[1:numel(vec_X)];%
934        end
935        if isempty(vec_U)
936            scale=1;
937        else
938            if isempty(indsel)
939                MaxU=max(abs(vec_U));
940                MaxV=max(abs(vec_V));
941            else
942                MaxU=max(abs(vec_U(indsel)));
943                MaxV=max(abs(vec_V(indsel)));
944            end
945            scale=MinMaxX/(max(MaxU,MaxV)*50);
946            PlotParam.Vectors.VecScale=scale;%update the 'scale' display
947        end
948    else
949        scale=PlotParam.Vectors.VecScale;  %impose the length of vector representation
950    end;
951   
952    %record vectors on the plotting axes
953    if test_C==0
954        vec_C=ones(1,numel(vec_X));
955    end
956    AxeData.X=vec_X';
957    AxeData.Y=vec_Y';
958    AxeData.U=vec_U';
959    AxeData.V=vec_V';
960    AxeData.C=vec_C';
961    if isempty(ivar_F)
962        AxeData.F=[];
963    else
964        AxeData.F=vec_F';
965    end
966    if isempty(ivar_FF)
967        AxeData.FF=[];
968    else
969        AxeData.FF=vec_FF';
970    end
971   
972    %decimate by a factor 2 in vector mesh(4 in nbre of vectors)
973    if isfield(PlotParam.Vectors,'decimate4')&isequal(PlotParam.Vectors.decimate4,1)
974        diffy=diff(vec_Y); %difference dy=vec_Y(i+1)-vec_Y(i)
975        dy_thresh=max(abs(diffy))/2;
976        ind_jump=find(abs(diffy) > dy_thresh); %indices with diff(vec_Y)> max/2, detect change of line
977        ind_sel=1:ind_jump(1);%select the first line
978        for i=2:2:length(ind_jump)-1
979            ind_sel=[ind_sel [ind_jump(i)+1:ind_jump(i+1)]];% select the odd lines
980        end
981        nb_sel=length(ind_sel);
982        ind_sel=ind_sel(1:2:nb_sel);% take half the points on a line
983        vec_X=vec_X(ind_sel);
984        vec_Y=vec_Y(ind_sel);
985        vec_U=vec_U(ind_sel);
986        vec_V=vec_V(ind_sel);
987        vec_C=vec_C(ind_sel);
988        if ~isempty(ivar_F)
989           vec_F=vec_F(ind_sel);
990        end
991        if ~isempty(ivar_FF)
992           vec_FF=vec_FF(ind_sel);
993        end
994    end
995   
996    %get main level color code
997    [colorlist,col_vec,PlotParamOut.Vectors]=set_col_vec(PlotParam.Vectors,vec_C);
998   
999    % take flags into account: add flag colors to the list of colors
1000    sizlist=size(colorlist);
1001    nbcolor=sizlist(1);
1002    if test_black
1003       nbcolor=nbcolor+1;
1004       colorlist(nbcolor,:)=[0 0 0]; %add black to the list of colors
1005       if ~isempty(ivar_FF)
1006            ind_flag=find(vec_F~=1 & vec_F~=0 & vec_FF==0);  %flag warning but not false
1007       else
1008            ind_flag=find(vec_F~=1 & vec_F~=0);
1009       end
1010       col_vec(ind_flag)=nbcolor;   
1011    end
1012    nbcolor=nbcolor+1;
1013    if ~isempty(ivar_FF)
1014        ind_flag=find(vec_FF~=0);
1015        if isfield(PlotParam.Vectors,'HideFalse') && PlotParam.Vectors.HideFalse==1
1016            colorlist(nbcolor,:)=[NaN NaN NaN];% no plot of false vectors
1017        else
1018            colorlist(nbcolor,:)=[1 0 1];% magenta color
1019        end
1020        col_vec(ind_flag)=nbcolor;
1021    end
1022    %plot vectors:
1023    quiresetn(haxes,vec_X,vec_Y,vec_U,vec_V,scale,colorlist,col_vec);   
1024
1025else
1026    hvec=findobj(haxes,'Tag','vel');
1027    if ~isempty(hvec)
1028        delete(hvec);
1029    end
1030    AxeData.X=[];
1031    AxeData.Y=[];
1032    AxeData.U=[];
1033    AxeData.V=[];
1034    AxeData.C=[];
1035    AxeData.W=[];
1036    AxeData.F=[];
1037     AxeData.FF=[];
1038    AxeData.Mesh=[];
1039    PlotParamOut=rmfield(PlotParamOut,'Vectors');
1040end
1041if isfield(Data,'Z')
1042    AxeData.Z=Data.Z;% A REVOIR
1043end
1044listfields={'AY','AX','A','X','Y','U','V','C','W','F','FF'};
1045listdim={'AY','AX',{'AY','AX'},'nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors'};
1046Role={'coord_y','coord_x','scalar','coord_x','coord_y','vector_x','vector_y','scalar','vector_z','warnflag','errorflag'};
1047ind_select=[];
1048nbvar=0;
1049AxeData.ListVarName={};
1050AxeData.VarDimName={};
1051AxeData.VarAttribute={};
1052for ilist=1:numel(listfields)
1053    eval(['testvar=isfield(AxeData,listfields{ilist}) && ~isempty(AxeData.' listfields{ilist} ');'])
1054    if testvar
1055        nbvar=nbvar+1;
1056        AxeData.ListVarName{nbvar}=listfields{ilist};
1057        AxeData.VarDimName{nbvar}=listdim{ilist};
1058        AxeData.VarAttribute{nbvar}.Role=Role{ilist};
1059    end
1060end
1061%store the coordinate extrema occupied by the field
1062test_lim=0;
1063if test_vec
1064    Xlim=[min(vec_X) max(vec_X)];
1065    Ylim=[min(vec_Y) max(vec_Y)];
1066    test_lim=1;
1067    if test_ima%both background image and vectors coexist, take the wider bound
1068        Xlim(1)=min(AX(1),Xlim(1));
1069        Xlim(2)=max(AX(end),Xlim(2));
1070        Ylim(1)=min(AY(end),Ylim(1));
1071        Ylim(2)=max(AY(1),Ylim(2));
1072    end
1073elseif test_ima %only image plot
1074    Xlim(1)=min(AX(1),AX(end));
1075    Xlim(2)=max(AX(1),AX(end));
1076    Ylim(1)=min(AY(1),AY(end));
1077    Ylim(2)=max(AY(1),AY(end));
1078    test_lim=1;
1079end
1080AxeData.RangeX=Xlim;
1081AxeData.RangeY=Ylim;
1082% adjust the size of the plot to include the whole field, except if PlotParam.FixedLimits=1
1083if ~(isfield(PlotParam,'FixedLimits') && PlotParam.FixedLimits) && test_lim
1084        if Xlim(2)>Xlim(1)
1085            set(haxes,'XLim',Xlim);% set x limits of frame in axes coordinates
1086        end
1087        if Ylim(2)>Ylim(1)
1088            set(haxes,'YLim',Ylim);% set y limits of frame in axes coordinate
1089        end
1090end
1091if ~(isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1))
1092     set(haxes,'DataAspectRatio',[1 1 1])
1093end
1094set(haxes,'YDir','normal')
1095set(get(haxes,'XLabel'),'String',[XName x_units]);
1096set(get(haxes,'YLabel'),'String',[YName y_units]);
1097
1098%-------------------------------------------------------------------
1099% --- function for plotting vectors
1100%INPUT:
1101% haxes: handles of the plotting axes
1102% x,y,u,v: vectors coordinates and vector components to plot, arrays withb the same dimension
1103% scale: scaling factor for vector length representation
1104% colorlist(icolor,:): list of vector colors, dim (nbcolor,3), depending on color #i
1105% col_vec: matlab vector setting the color number #i for each velocity vector
1106function quiresetn(haxes,x,y,u,v,scale,colorlist,col_vec)
1107%-------------------------------------------------------------------
1108%define arrows
1109theta=0.5 ;%angle arrow
1110alpha=0.3 ;%length arrow
1111rot=alpha*[cos(theta) -sin(theta); sin(theta) cos(theta)]';
1112%find the existing lines
1113%h=findobj(gca,'Type','Line');% search existing lines in the current axes
1114h=findobj(haxes,'Tag','vel');% search existing lines in the current axes
1115sizh=size(h);
1116set(h,'EraseMode','xor');
1117set(haxes,'NextPlot','replacechildren');
1118     
1119%drawnow
1120%create lines (if no lines) or modify them
1121if ~isequal(size(col_vec),size(x))
1122    col_vec=ones(size(x));% case of error in col_vec input
1123end
1124sizlist=size(colorlist);
1125ncolor=sizlist(1);
1126
1127for icolor=1:ncolor
1128    %determine the line positions for each color icolor
1129    ind=find(col_vec==icolor);
1130    xc=x(ind);
1131    yc=y(ind);
1132    uc=u(ind)*scale;
1133    vc=v(ind)*scale;
1134    n=size(xc);
1135    xN=NaN*ones(size(xc));
1136    matx=[xc(:)-uc(:)/2 xc(:)+uc(:)/2 xN(:)]';
1137%     matx=[xc(:) xc(:)+uc(:) xN(:)]';
1138    matx=reshape(matx,1,3*n(2));
1139    maty=[yc(:)-vc(:)/2 yc(:)+vc(:)/2 xN(:)]';
1140%     maty=[yc(:) yc(:)+vc(:) xN(:)]';
1141    maty=reshape(maty,1,3*n(2));
1142   
1143    %determine arrow heads
1144    arrowplus=rot*[uc;vc];
1145    arrowmoins=rot'*[uc;vc];
1146    x1=xc+uc/2-arrowplus(1,:);
1147    x2=xc+uc/2;
1148    x3=xc+uc/2-arrowmoins(1,:);
1149    y1=yc+vc/2-arrowplus(2,:);
1150    y2=yc+vc/2;
1151    y3=yc+vc/2-arrowmoins(2,:);
1152%     x1=xc+uc-arrowplus(1,:);
1153%     x2=xc+uc;
1154%     x3=xc+uc-arrowmoins(1,:);
1155%     y1=yc+vc-arrowplus(2,:);
1156%     y2=yc+vc;
1157%     y3=yc+vc-arrowmoins(2,:);
1158    matxar=[x1(:) x2(:) x3(:) xN(:)]';
1159    matxar=reshape(matxar,1,4*n(2));
1160    matyar=[y1(:) y2(:) y3(:) xN(:)]';
1161    matyar=reshape(matyar,1,4*n(2));
1162    %draw the line or modify the existing ones
1163      hx = [x1;x2;x3];
1164      hy = [y1;y2;y3];
1165    tri=reshape([1:3*length(uc)],3,[])';
1166    d = tri(:,[1 2 3 1])';
1167   
1168    isn=isnan(colorlist(icolor,:));%test if color NaN
1169    if 2*icolor > sizh(1) %if icolor exceeds the number of existing ones
1170        axes(haxes)
1171        if ~isn(1) %if the vectors are visible color not nan
1172            if n(2)>0
1173                hold on
1174                line(matx,maty,'Color',colorlist(icolor,:),'Tag','vel');% plot new lines
1175                line(matxar,matyar,'Color',colorlist(icolor,:),'Tag','vel');% plot arrows
1176%                 fill(hx(d),hy(d),colorlist(icolor,:),'EdgeColor','none','
1177%                 Tag','Vel');
1178          end
1179        end
1180    else
1181        if isn(1)
1182            delete(h(2*icolor-1))
1183            delete(h(2*icolor))
1184        else
1185            set(h(2*icolor-1),'Xdata',matx,'Ydata',maty);
1186            set(h(2*icolor-1),'Color',colorlist(icolor,:));
1187            set(h(2*icolor-1),'EraseMode','xor');
1188            set(h(2*icolor),'Xdata',matxar,'Ydata',matyar);
1189            set(h(2*icolor),'Color',colorlist(icolor,:));
1190            set(h(2*icolor),'EraseMode','xor');
1191        end
1192     end
1193end
1194if sizh(1) > 2*ncolor
1195    for icolor=ncolor+1 : sizh(1)/2%delete additional objects
1196        delete(h(2*icolor-1))
1197        delete(h(2*icolor))
1198    end
1199end
1200
1201%-------------------------------------------------------------------
1202% ---- determine tick positions for colorbar
1203function YTick=colbartick(MinA,MaxA)
1204%-------------------------------------------------------------------
1205%determine tick positions with "simple" values between MinA and MaxA
1206YTick=0;%default
1207maxabs=max([abs(MinA) abs(MaxA)]);
1208if maxabs>0
1209ord=10^(floor(log10(maxabs)));%order of magnitude
1210div=1;
1211siz2=1;
1212while siz2<2
1213%     values=[-9:div:9];
1214    values=-10:div:10;
1215    ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);%indices of 'values' such that MinA<ord*values<MaxA
1216    siz=size(ind);
1217    if siz(2)<4%if there are less than 4 selected values (4 levels)
1218        values=-9:0.5*div:9;
1219        ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);
1220    end
1221    siz2=size(ind,2);
1222%     siz2=siz(2)
1223    div=div/10;
1224end
1225YTick=ord*values(ind);
1226end
1227
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