source: trunk/src/plot_field.m @ 173

Last change on this file since 173 was 156, checked in by sommeria, 13 years ago

many bug repairs and corrections for mouse action
create_grid: option for black marjkers for grid detection

File size: 49.6 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 isfield(PlotParam,'text_display_1') && ishandle(PlotParam.text_display_1)
142    PlotParam=read_plot_param(PlotParam);   
143end
144if testnewfig% create a new figure and axes if the plotting axes does not exist
145    hfig=figure;
146    if isfield(PlotParam,'text_display_1') && ishandle(PlotParam.text_display_1)
147        set(hfig,'UserData',PlotParam)
148    end
149    set(hfig,'Units','normalized')
150    set(hfig,'WindowButtonDownFcn','mouse_down')
151    set(hfig,'WindowButtonMotionFcn','mouse_motion')%set mouse action function
152    set(hfig,'WindowButtonUpFcn','mouse_up')%set mouse action function
153    haxes=axes;
154    set(haxes,'position',[0.13,0.2,0.775,0.73])
155     PlotParam.NextPlot='add'; %parameter for plot_profile and plot_his
156else
157    hfig=get(haxes,'parent');
158    set(0,'CurrentFigure',hfig)
159    set(hfig,'CurrentAxes',haxes)
160end
161
162if isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1)
163    set(haxes,'DataAspectRatioMode','auto')%automatic aspect ratio
164end
165
166% check the cells of fields :
167% testnbdim=1;
168[CellVarIndex,NbDim,VarType,errormsg]=find_field_indices(Data);
169
170if ~isempty(errormsg)
171    msgbox_uvmat('ERROR',['input of plot_field/find_field_indices: ' errormsg])
172    display(['input of plot_field: ' errormsg])
173    return
174end
175if ~isfield(Data,'NbDim') %& ~isfield(Data,'Style')%determine the space dimensionb if not defined: choose the kind of plot
176    [Data.NbDim]=max(NbDim);
177end
178errormsg=[];
179if isequal(Data.NbDim,0)
180        AxeData=plot_text(Data,htext);
181        PlotType='text';
182        errormsg=[];
183elseif isequal(Data.NbDim,1)
184    [AxeData]=plot_profile(Data,CellVarIndex,VarType,haxes,PlotParam);%
185    if testzoomaxes
186        [AxeData,zoomaxes,PlotParamOut]=plot_profile(Data,CellVarIndex,VarType,zoomaxes,PlotParam);
187        AxeData.ZoomAxes=zoomaxes;
188    end
189    PlotType='line';
190    errormsg=[];
191elseif isequal(Data.NbDim,2)
192    ind_select=find(NbDim>=2);
193    if numel(ind_select)>2
194        errormsg='more than two fields to map';
195    else
196        [AxeData,xx,PlotParamOut,PlotType,errormsg]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),haxes,PlotParam,htext,PosColorbar);
197        if testzoomaxes && isempty(errormsg)
198            [AxeData,zoomaxes,PlotParamOut,xx,errormsg]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),zoomaxes,PlotParam,1,PosColorbar);
199            Data.ZoomAxes=zoomaxes;
200        end
201    end
202elseif isequal(Data.NbDim,3)
203    errormsg='volume plot not implemented yet';
204end
205if ~isempty(errormsg)
206    msgbox_uvmat('ERROR','volume plot not implemented yet')
207    return
208end
209
210%display (or delete) error message
211htext=findobj(haxes,'Tag','hTxt');
212if isfield(Data,'Txt')
213    if isempty(htext)
214        Xlim=get(haxes,'XLim');
215        Ylim=get(haxes,'YLim');
216        htext=text(Xlim(1),(Ylim(1)+Ylim(2))/2,Data.Txt,'Tag','hTxt','Color','r');
217        set(htext,'Interpreter','none')
218    else
219        set(htext,'String',Data.Txt)
220    end
221elseif ~isempty(htext)
222    delete(htext)
223end
224
225% % set graph aspect ratio
226% if isfield(AxeData,'Mesh')
227%     Data.Mesh=AxeData.Mesh;
228% end
229
230%set(haxes,'UserData',AxeData)
231set(haxes,'UserData',Data)
232% if ~testnewfig
233% %set(0,'Children',hstack);%put back the initial figure stack after plot creation
234%
235% end
236
237
238%-------------------------------------------------------------------
239function hdisplay=plot_text(FieldData,hdisplay_in)
240%-------------------------------------------------------------------
241if exist('hdisplay_in','var') && ~isempty(hdisplay_in) && ishandle(hdisplay_in) && isequal(get(hdisplay_in,'Type'),'uicontrol')
242    hdisplay=hdisplay_in;
243else
244    figure;%create new figure
245    hdisplay=uicontrol('Style','edit', 'Units','normalized','Position', [0 0 1 1],'Max',2,'FontName','monospaced');
246end
247   
248ff=fields(FieldData);%list of field names
249vv=struct2cell(FieldData);%list of field values
250
251for icell=1:length(vv)
252    Tabcell{icell,1}=ff{icell};
253    ss=vv{icell};
254    sizss=size(ss);
255    if isnumeric(ss)
256        if sizss(1)<=1 && length(ss)<5
257            displ{icell}=num2str(ss);
258        else
259            displ{icell}=[class(ss) ', size ' num2str(size(ss))];
260        end
261    elseif ischar(ss)
262        displ{icell}=ss;
263    elseif iscell(ss)
264        sizcell=size(ss);
265        if sizcell(1)==1 && length(sizcell)==2 %line cell
266           ssline='{''';
267           for icolumn=1:sizcell(2)
268               if isnumeric(ss{icolumn})
269                   if size(ss{icolumn},1)<=1 && length(ss{icolumn})<5
270                      sscolumn=num2str(ss{icolumn});%line vector
271                   else
272                      sscolumn=[class(ss{icolumn}) ', size ' num2str(size(ss{icolumn}))];
273                   end
274               elseif ischar(ss{icolumn})
275                   sscolumn=ss{icolumn};
276               else
277                   sscolumn=class(ss{icolumn});
278               end
279               if icolumn==1
280                   ssline=[ssline sscolumn];
281               else
282                   ssline=[ssline ''',''' sscolumn];
283               end
284           end
285           displ{icell}=[ssline '''}'];
286        else
287           displ{icell}=[class(ss) ', size ' num2str(sizcell)];
288        end
289    else
290        displ{icell}=class(ss);
291    end
292    Tabcell{icell,2}=displ{icell};
293end
294Tabchar=cell2tab(Tabcell,': ');
295set(hdisplay,'String', Tabchar)
296
297
298%-------------------------------------------------------------------
299function [AxeData,haxes]=plot_profile(data,CellVarIndex,VarType,haxes,PlotParam)
300%-------------------------------------------------------------------
301%TODO: modify existing plot if it exists
302
303hfig=get(haxes,'parent');
304AxeData=[];%data;
305
306ColorOrder=[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];
307set(haxes,'ColorOrder',ColorOrder)
308if isfield(PlotParam,'NextPlot')
309    set(haxes,'NextPlot',PlotParam.NextPlot)
310end
311% adjust the size of the plot to include the whole field,
312if isfield(PlotParam,'FixedLimits') && isequal(PlotParam.FixedLimits,1)  %adjust the graph limits*
313    set(haxes,'XLimMode', 'manual')
314    set(haxes,'YLimMode', 'manual')
315else
316    set(haxes,'XLimMode', 'auto')
317    set(haxes,'YLimMode', 'auto')
318end
319legend_str={};
320
321%% prepare the string for plot command
322%initiate  the plot command
323plotstr='hhh=plot(';
324textmean={};
325coord_x_index=[];
326test_newplot=1;
327% hh=findobj(haxes,'tag','plot_line');
328% num_curve=numel(hh);
329% icurve=0;
330
331%loop on input  fields
332for icell=1:length(CellVarIndex)
333    VarIndex=CellVarIndex{icell};%  indices of the selected variables in the list data.ListVarName
334    if ~isempty(VarType{icell}.coord_x)
335        coord_x_index=VarType{icell}.coord_x;
336    else
337        coord_x_index_cell=VarType{icell}.coord(1);
338        if isequal(coord_x_index_cell,0)
339            continue  % the cell has no abscissa, skip it
340        end
341        if ~isempty(coord_x_index)&&~isequal(coord_x_index_cell,coord_x_index)
342            continue %all the selected variables must have the same first dimension
343        else
344            coord_x_index=coord_x_index_cell;
345        end
346    end
347    testplot=ones(size(data.ListVarName));%default test for plotted variables
348    xtitle=data.ListVarName{coord_x_index};
349    eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
350    if isfield(data,'VarAttribute')&& numel(data.VarAttribute)>=coord_x_index && isfield(data.VarAttribute{coord_x_index},'units')
351        xtitle=[xtitle '(' data.VarAttribute{coord_x_index}.units ')'];
352    end
353    eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
354    testplot(coord_x_index)=0;
355    if ~isempty(VarType{icell}.ancillary')
356        testplot(VarType{icell}.ancillary)=0;
357    end
358    if ~isempty(VarType{icell}.warnflag')
359        testplot(VarType{icell}.warnflag)=0;
360    end
361    if isfield(data,'VarAttribute')
362        VarAttribute=data.VarAttribute;
363        for ivar=1:length(VarIndex)
364            if length(VarAttribute)>=VarIndex(ivar) && isfield(VarAttribute{VarIndex(ivar)},'long_name')
365                plotname{VarIndex(ivar)}=VarAttribute{VarIndex(ivar)}.long_name;
366            else
367                plotname{VarIndex(ivar)}=data.ListVarName{VarIndex(ivar)};%name for display in plot A METTRE
368            end
369        end
370    end
371    %     test_newplot=0;%default
372    %     if num_curve>=icurve+numel(find(testplot(VarIndex)))%update existing curves
373    %         if ~isempty(VarType{icell}.discrete')
374    %             charplot_0='+';
375    %             LineStyle='none';
376    %         else
377    %             charplot_0='none';
378    %             LineStyle='-';
379    %         end
380    %         for ivar=1:length(VarIndex)
381    %             if testplot(VarIndex(ivar))
382    %                 icurve=icurve+1;
383    %                 VarName=data.ListVarName{VarIndex(ivar)};
384    %                 eval(['data.' VarName '=squeeze(data.' VarName ');'])
385    %                 set(hh(icurve),'LineStyle',LineStyle)
386    %                 set(hh(icurve),'Marker',charplot_0)
387    %                 set(hh(icurve),'XData',coord_x{icell})
388    %                 eval(['yy=data.' VarName ';'])
389    %                 set(hh(icurve),'YData',yy);
390    %             end
391    %         end
392    %     else% new plot
393    if ~isempty(VarType{icell}.discrete')
394        charplot_0='''+''';
395    else
396        charplot_0='''-''';
397    end
398    for ivar=1:length(VarIndex)
399        if testplot(VarIndex(ivar))
400            VarName=data.ListVarName{VarIndex(ivar)};
401            eval(['data.' VarName '=squeeze(data.' VarName ');'])
402            plotstr=[plotstr 'coord_x{' num2str(icell) '},data.' VarName ',' charplot_0 ','];
403            eval(['nbcomponent2=size(data.' VarName ',2);']);
404            eval(['nbcomponent1=size(data.' VarName ',1);']);
405            if numel(coord_x{icell})==2
406                coord_x{icell}=linspace(coord_x{icell}(1),coord_x{icell}(2),nbcomponent1);
407            end
408            eval(['varmean=mean(double(data.' VarName '));']);%mean value
409            textmean=[textmean; {[VarName 'mean= ' num2str(varmean,4)]}];
410            if nbcomponent1==1|| nbcomponent2==1
411                legend_str=[legend_str {VarName}]; %variable with one component
412            else  %variable with severals  components
413                for ic=1:min(nbcomponent1,nbcomponent2)
414                    legend_str=[legend_str [VarName '_' num2str(ic)]]; %variable with severals  components
415                end                                                   % labeled by their index (e.g. color component)
416            end
417        end
418    end
419end
420
421%% activate the plot
422if test_newplot && ~isequal(plotstr,'hhh=plot(')
423    plotstr=[plotstr '''tag'',''plot_line'');'];
424                %execute plot (instruction  plotstr)
425%     set(hfig,'CurrentAxes',haxes)
426%     axes(haxes)% select the plotting axes for plot operation
427    eval(plotstr)
428   
429                %%%%%
430    grid(haxes, 'on')
431    hxlabel=xlabel(xtitle);
432    set(hxlabel,'Interpreter','none')% desable tex interpreter
433    if length(legend_str)>=1
434        hylabel=ylabel(legend_str{end});
435        set(hylabel,'Interpreter','none')% desable tex interpreter
436    end
437    if ~isempty(legend_str)
438        hlegend=findobj(hfig,'Tag','legend');
439        if isempty(hlegend)
440            hlegend=legend(legend_str);
441            txt=ver('MATLAB');
442            Release=txt.Release;
443            relnumb=str2double(Release(3:4));% should be changed to Version for better compatibility
444            if relnumb >= 14
445                set(hlegend,'Interpreter','none')% desable tex interpreter
446            end
447        else
448            legend_old=get(hlegend,'String');
449            if isequal(size(legend_old,1),size(legend_str,1))&&~isequal(legend_old,legend_str)
450                set(hlegend,'String',[legend_old legend_str]);
451            end
452        end
453    end
454    title_str='';
455    if isfield(data,'filename')
456       [Path, title_str, ext]=fileparts(data.filename);
457       title_str=[title_str ext];
458    end
459    if isfield(data,'Action')
460        if ~isequal(title_str,'')
461            title_str=[title_str ', '];
462        end
463        title_str=[title_str data.Action];
464    end
465    htitle=title(title_str);
466    txt=ver('MATLAB');
467    Release=txt.Release;
468    relnumb=str2double(Release(3:4));
469    if relnumb >= 14
470        set(htitle,'Interpreter','none')% desable tex interpreter
471    end
472    % A REPRENDRE Mean
473%         hlist=findobj(gcf,'Style','listbox','Tag','liststat');
474%         if isempty(hlist)
475%             'text'
476%             textmean
477%             set(gca,'position',[0.13,0.2,0.775,0.73])
478%             uicontrol('Style','popupmenu','Position',[20 20 200 20],'String',textmean,'Tag','liststat');
479%         else
480%             set(hlist(1),'String',textmean)
481%         end
482end
483
484
485%-------------------------------------------------------------------
486function [AxeData,haxes,PlotParamOut,PlotType,errormsg]=plot_plane(Data,CellVarIndex,VarTypeCell,haxes,PlotParam,htext,PosColorbar)
487%-------------------------------------------------------------------
488
489grid(haxes, 'off')
490%default plotting parameters
491PlotType='plane';%default
492if ~exist('PlotParam','var')
493    PlotParam=[];
494end
495if ~isfield(PlotParam,'Scalar')
496    PlotParam.Scalar=[];
497end
498if ~isfield(PlotParam,'Vectors')
499    PlotParam.Vectors=[];
500end
501PlotParamOut=PlotParam;%default
502hfig=get(haxes,'parent');
503hcol=findobj(hfig,'Tag','Colorbar'); %look for colorbar axes
504hima=findobj(haxes,'Tag','ima');% search existing image in the current axes
505AxeData=get(haxes,'UserData'); %default
506if ~isstruct(AxeData)% AxeData must be a structure
507    AxeData=[];
508end
509AxeData.NbDim=2;
510% if isfield(Data,'ObjectCoord')
511%     AxeData.ObjectCoord=Data.ObjectCoord;
512% end
513errormsg=[];%default
514test_ima=0; %default: test for image or map plot
515test_vec=0; %default: test for vector plots
516test_black=0;
517test_false=0;
518test_C=0;
519XName='';
520x_units='';
521YName='';
522y_units='';
523for icell=1:length(CellVarIndex) % length(CellVarIndex) =1 or 2 (from the calling function)
524    VarType=VarTypeCell{icell};
525    ivar_X=VarType.coord_x; % defines (unique) index for the variable representing unstructured x coordinate (default =[])
526    ivar_Y=VarType.coord_y; % defines (unique)index for the variable representing unstructured y coordinate (default =[])
527    ivar_U=VarType.vector_x; % defines (unique) index for the variable representing x vector component (default =[])
528    ivar_V=VarType.vector_y; % defines (unique) index for the variable representing y vector component (default =[])
529    ivar_C=[VarType.scalar VarType.image VarType.color VarType.ancillary]; %defines index (indices) for the scalar or ancillary fields
530    if numel(ivar_C)>1
531        errormsg= 'error in plot_field: too many scalar inputs';
532        return
533    end
534    ivar_F=VarType.warnflag; %defines index (unique) for warning flag variable
535    ivar_FF=VarType.errorflag; %defines index (unique) for error flag variable
536    ind_coord=find(VarType.coord);
537    if numel(ind_coord)==2
538        VarType.coord=VarType.coord(ind_coord);
539    end
540%     idim_Y=[]; 
541%     test_grid=0;
542    if ~isempty(ivar_U) && ~isempty(ivar_V)% vector components detected
543        if test_vec
544            errormsg='error in plot_field: attempt to plot two vector fields';
545            return
546        else
547            test_vec=1;
548            eval(['vec_U=Data.' Data.ListVarName{ivar_U} ';'])
549            eval(['vec_V=Data.' Data.ListVarName{ivar_V} ';'])
550            if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)     
551                eval(['vec_X=Data.' Data.ListVarName{ivar_X} ';'])
552                eval(['vec_Y=Data.' Data.ListVarName{ivar_Y} ';'])
553            elseif numel(VarType.coord)==2 && ~isequal(VarType.coord,[0 0]);%coordinates defines by dimension variables
554                eval(['y=Data.' Data.ListVarName{VarType.coord(1)} ';'])
555                eval(['x=Data.' Data.ListVarName{VarType.coord(2)} ';'])
556                if numel(y)==2 % y defined by first and last values on aregular mesh
557                    y=linspace(y(1),y(2),size(vec_U,1));
558                end
559                if numel(x)==2 % y defined by first and last values on aregular mesh
560                    x=linspace(x(1),x(2),size(vec_U,2));
561                end
562                [vec_X,vec_Y]=meshgrid(x,y); 
563            else
564                errormsg='error in plot_field: invalid coordinate definition for vector field';
565                return
566            end
567            if ~isempty(ivar_C)
568                 eval(['vec_C=Data.' Data.ListVarName{ivar_C} ';']) ;
569                 vec_C=reshape(vec_C,1,numel(vec_C));
570                 test_C=1;
571            end
572            if ~isempty(ivar_F)%~(isfield(PlotParam.Vectors,'HideWarning')&& isequal(PlotParam.Vectors.HideWarning,1))
573                if test_vec
574                    eval(['vec_F=Data.' Data.ListVarName{ivar_F} ';']) % warning flags for  dubious vectors
575                    if  ~(isfield(PlotParam.Vectors,'HideWarning') && isequal(PlotParam.Vectors.HideWarning,1))
576                        test_black=1;
577                    end
578                end
579            end
580            if ~isempty(ivar_FF) %&& ~test_false
581                if test_vec% TODO: deal with FF for structured coordinates
582                    eval(['vec_FF=Data.' Data.ListVarName{ivar_FF} ';']) % flags for false vectors
583                end
584            end
585        end
586    elseif ~isempty(ivar_C) %scalar or image
587        if test_ima
588             errormsg='attempt to plot two scalar fields or images';
589            return
590        end
591        eval(['A=squeeze(Data.' Data.ListVarName{ivar_C} ');']) ;% scalar represented as color image
592        test_ima=1;
593        if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)
594            XName=Data.ListVarName{ivar_X};
595            YName=Data.ListVarName{ivar_Y};
596            eval(['AX=Data.' XName ';'])
597            eval(['AY=Data.' YName ';'])
598            [A,AX,AY]=proj_grid(AX',AY',A',[],[],'np>256');  % interpolate on a grid 
599            if isfield(Data,'VarAttribute')
600                if numel(Data.VarAttribute)>=ivar_X && isfield(Data.VarAttribute{ivar_X},'units')
601                    x_units=['(' Data.VarAttribute{ivar_X}.units ')'];
602                end
603                if numel(Data.VarAttribute)>=ivar_Y && isfield(Data.VarAttribute{ivar_Y},'units')
604                    y_units=['(' Data.VarAttribute{ivar_Y}.units ')'];
605                end
606            end       
607        elseif numel(VarType.coord)==2 %structured coordinates
608            XName=Data.ListVarName{VarType.coord(2)};
609            YName=Data.ListVarName{VarType.coord(1)};
610            eval(['AY=Data.' Data.ListVarName{VarType.coord(1)} ';'])
611            eval(['AX=Data.' Data.ListVarName{VarType.coord(2)} ';'])
612            test_interp_X=0; %default, regularly meshed X coordinate
613            test_interp_Y=0; %default, regularly meshed Y coordinate
614            if isfield(Data,'VarAttribute')
615                if numel(Data.VarAttribute)>=VarType.coord(2) && isfield(Data.VarAttribute{VarType.coord(2)},'units')
616                    x_units=['(' Data.VarAttribute{VarType.coord(2)}.units ')'];
617                end
618                if numel(Data.VarAttribute)>=VarType.coord(1) && isfield(Data.VarAttribute{VarType.coord(1)},'units')
619                    y_units=['(' Data.VarAttribute{VarType.coord(1)}.units ')'];
620                end
621            end 
622            if numel(AY)>2
623                DAY=diff(AY);
624                DAY_min=min(DAY);
625                DAY_max=max(DAY);
626                if sign(DAY_min)~=sign(DAY_max);% =1 for increasing values, 0 otherwise
627                     errormsg=['errror in plot_field.m: non monotonic dimension variable ' Data.ListVarName{VarType.coord(1)} ];
628                      return
629                end
630                test_interp_Y=(DAY_max-DAY_min)> 0.0001*abs(DAY_max);
631            end
632            if numel(AX)>2
633                DAX=diff(AX);
634                DAX_min=min(DAX);
635                DAX_max=max(DAX);
636                if sign(DAX_min)~=sign(DAX_max);% =1 for increasing values, 0 otherwise
637                     errormsg=['errror in plot_field.m: non monotonic dimension variable ' Data.ListVarName{VarType.coord(2)} ];
638                      return
639                end
640                test_interp_X=(DAX_max-DAX_min)> 0.0001*abs(DAX_max);
641            end 
642            if test_interp_Y         
643                npxy(1)=max([256 floor((AY(end)-AY(1))/DAY_min) floor((AY(end)-AY(1))/DAY_max)]);
644                yI=linspace(AY(1),AY(end),npxy(1));
645                if ~test_interp_X
646                    xI=linspace(AX(1),AX(end),size(A,2));%default
647                    AX=xI;
648                end
649            end
650            if test_interp_X 
651                npxy(1)=max([256 floor((AX(end)-AX(1))/DAX_min) floor((AX(end)-AX(1))/DAX_max)]);
652                xI=linspace(AX(1),AX(end),npxy(2));   
653                if ~test_interp_Y
654                   yI=linspace(AY(1),AY(end),size(A,1));
655                   AY=yI;
656                end
657            end
658            if test_interp_X || test_interp_Y               
659                [AX2D,AY2D]=meshgrid(AX,AY);
660                A=interp2(AX2D,AY2D,double(A),xI,yI');
661            end
662            AX=[AX(1) AX(end)];% keep only the lower and upper bounds for image represnetation
663            AY=[AY(1) AY(end)];
664        else
665            errormsg='error in plot_field: invalid coordinate definition ';
666            return
667        end
668          %x_label=[Data.ListVarName{ivar_X} '(' x_units ')'];
669    end         
670end
671
672%%   image or scalar plot %%%%%%%%%%%%%%%%%%%%%%%%%%
673
674if ~isfield(PlotParam.Scalar,'Contours')
675    PlotParam.Scalar.Contours=0; %default
676end
677PlotParamOut=PlotParam; %default
678if test_ima
679    % distinguish B/W and color images
680    np=size(A);%size of image
681    siz=numel(np);
682    if siz>3
683       errormsg=['unrecognized scalar type: ' num2str(siz) ' dimensions'];
684            return
685    end
686    if siz==3
687        if np(3)==1
688            siz=2;%B W image
689        elseif np(3)==3
690            siz=3;%color image
691        else
692            errormsg=['unrecognized scalar type: ' num2str(np(3)) ' color components'];
693            return
694        end
695    end
696   
697    %set the color map
698    if isfield(PlotParam.Scalar,'BW')
699        BW=PlotParam.Scalar.BW; %test for BW gray scale images
700    else
701        BW=(siz==2) && (isa(A,'uint8')|| isa(A,'uint16'));% non color images represented in gray scale by default
702    end
703   
704    %case of grey level images or contour plot
705    if siz==2
706        if ~isfield(PlotParam.Scalar,'AutoScal')
707            PlotParam.Scalar.AutoScal=0;%default
708        end
709        if ~isfield(PlotParam.Scalar,'MinA')
710            PlotParam.Scalar.MinA=[];%default
711        end
712        if ~isfield(PlotParam.Scalar,'MaxA')
713            PlotParam.Scalar.MaxA=[];%default
714        end
715        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
716            MinA=double(min(min(A)));
717        else
718            MinA=PlotParam.Scalar.MinA; 
719        end;
720        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
721            MaxA=double(max(max(A)));
722        else
723            MaxA=PlotParam.Scalar.MaxA; 
724        end;
725        PlotParamOut.Scalar.MinA=MinA;
726        PlotParamOut.Scalar.MaxA=MaxA;
727       
728        % case of contour plot
729        if isequal(PlotParam.Scalar.Contours,1)
730            if ~isempty(hima) && ishandle(hima)
731                delete(hima)
732            end
733            if ~isfield(PlotParam.Scalar,'IncrA')
734                PlotParam.Scalar.IncrA=NaN;
735            end
736            if isnan(PlotParam.Scalar.IncrA)% | PlotParam.Scalar.AutoScal==0
737                cont=colbartick(MinA,MaxA);
738                intercont=cont(2)-cont(1);%default
739                PlotParamOut.Scalar.IncrA=intercont;
740            else
741               intercont=PlotParam.Scalar.IncrA;
742            end
743            B=A;           
744            abscontmin=intercont*floor(MinA/intercont);
745            abscontmax=intercont*ceil(MaxA/intercont);
746            contmin=intercont*floor(min(min(B))/intercont);
747            contmax=intercont*ceil(max(max(B))/intercont);
748            cont_pos_plus=0:intercont:contmax;
749            cont_pos_min=double(contmin):intercont:-intercont;
750            cont_pos=[cont_pos_min cont_pos_plus];
751            sizpx=(AX(end)-AX(1))/(np(2)-1);
752            sizpy=(AY(1)-AY(end))/(np(1)-1);
753            x_cont=AX(1):sizpx:AX(end); % pixel x coordinates for image display
754            y_cont=AY(1):-sizpy:AY(end); % pixel x coordinates for image display
755           % axes(haxes)% set the input axes handle as current axis
756    txt=ver('MATLAB');
757    Release=txt.Release;
758            relnumb=str2double(Release(3:4));
759            if relnumb >= 14
760                    vec=linspace(0,1,(abscontmax-abscontmin)/intercont);%define a greyscale colormap with steps intercont
761                map=[vec' vec' vec'];
762                colormap(map);
763                [var,hcontour]=contour(x_cont,y_cont,B,cont_pos);       
764                set(hcontour,'Fill','on')
765                set(hcontour,'LineStyle','none')
766                hold on
767            end
768            [var_p,hcontour_p]=contour(x_cont,y_cont,B,cont_pos_plus,'k-');
769            hold on
770            [var_m,hcontour_m]=contour(x_cont,y_cont,B,cont_pos_min,':');
771            set(hcontour_m,'LineColor',[1 1 1])
772            hold off
773            caxis([abscontmin abscontmax])
774            colormap(map);
775        end
776       
777        % set  colormap for  image display
778        if ~isequal(PlotParam.Scalar.Contours,1) 
779            % rescale the grey levels with min and max, put a grey scale colorbar
780            B=A;
781            if BW
782                vec=linspace(0,1,255);%define a linear greyscale colormap
783                map=[vec' vec' vec'];
784                colormap(map);  %grey scale color map
785            else
786                colormap('default'); % standard faulse colors for div, vort , scalar fields
787            end
788        end
789       
790    % case of color images
791    else
792        if BW
793            B=uint16(sum(A,3));
794        else
795            B=uint8(A);
796        end
797        MinA=0;
798        MaxA=255;
799    end
800   
801    % display usual image
802    if ~isequal(PlotParam.Scalar.Contours,1)     
803        % interpolate field to increase resolution of image display
804        test_interp=1;
805        if max(np) <= 64
806            npxy=8*np;% increase the resolution 8 times
807        elseif max(np) <= 128
808            npxy=4*np;% increase the resolution 4 times
809        elseif max(np) <= 256
810            npxy=2*np;% increase the resolution 2 times
811        else
812            npxy=np;
813            test_interp=0; % no interpolation done
814        end
815        if test_interp==1%if we interpolate   
816            x=linspace(AX(1),AX(2),np(2));
817            y=linspace(AY(1),AY(2),np(1));
818            [X,Y]=meshgrid(x,y);
819            xi=linspace(AX(1),AX(2),npxy(2));
820            yi=linspace(AY(1),AY(2),npxy(1));
821            B = interp2(X,Y,double(B),xi,yi');
822        end           
823        % create new image if there  no image handle is found
824        if isempty(hima)
825           % axes(haxes)% set haxes the current axes for image creation
826         %   set(hfig,'CurrentAxes',haxes) % set haxes the current axes for image creation
827            tag=get(haxes,'Tag');
828            if MinA<MaxA
829                hima=imagesc(AX,AY,B,[MinA MaxA]);
830            else % to deal with uniform field
831                hima=imagesc(AX,AY,B,[MaxA-1 MaxA]);
832            end
833            set(hima,'Tag','ima','HitTest','off')
834            set(haxes,'Tag',tag);%preserve the axes tag (removed by image fct !!!)           
835        % update an existing image
836        else
837            set(hima,'CData',B);
838            if MinA<MaxA
839                set(haxes,'CLim',[MinA MaxA])
840                %caxis([MinA MaxA])
841            else
842                set(haxes,'CLim',[MinA MaxA])
843                %caxis([MaxA-1 MaxA])
844            end
845            set(hima,'XData',AX);
846            set(hima,'YData',AY);
847        end
848    end
849    if ~isstruct(AxeData)
850        AxeData=[];
851    end
852%     AxeData.A=A;
853%     AxeData.AX=[AX(1) AX(end)];
854%     AxeData.AY=[AY(1) AY(end)];
855    test_ima=1;
856   
857    %display the colorbar code for B/W images if Poscolorbar not empty
858    if siz==2 && exist('PosColorbar','var')&& ~isempty(PosColorbar)
859        if isempty(hcol)||~ishandle(hcol)
860             hcol=colorbar;%create new colorbar
861        end
862        if length(PosColorbar)==4
863                 set(hcol,'Position',PosColorbar)           
864        end
865        %YTick=0;%default
866        if MaxA>MinA
867            if isequal(PlotParam.Scalar.Contours,1)
868                colbarlim=get(hcol,'YLim');
869                scale_bar=(colbarlim(2)-colbarlim(1))/(abscontmax-abscontmin);               
870                YTick=cont_pos(2:end-1);
871                YTick_scaled=colbarlim(1)+scale_bar*(YTick-abscontmin);
872                set(hcol,'YTick',YTick_scaled);
873            elseif (isfield(PlotParam.Scalar,'BW') && isequal(PlotParam.Scalar.BW,1))||isa(A,'uint8')|| isa(A,'uint16')%images
874                hi=get(hcol,'children');
875                if iscell(hi)%multiple images in colorbar
876                    hi=hi{1};
877                end
878                set(hi,'YData',[MinA MaxA])
879                set(hi,'CData',(1:256)')
880                set(hcol,'YLim',[MinA MaxA])
881                YTick=colbartick(MinA,MaxA);
882                set(hcol,'YTick',YTick)               
883            else
884                hi=get(hcol,'children');
885                if iscell(hi)%multiple images in colorbar
886                    hi=hi{1};
887                end
888                set(hi,'YData',[MinA MaxA])
889                set(hi,'CData',(1:64)')
890                YTick=colbartick(MinA,MaxA);
891                set(hcol,'YLim',[MinA MaxA])
892                set(hcol,'YTick',YTick)
893            end
894            set(hcol,'Yticklabel',num2str(YTick'));
895        end
896    elseif ishandle(hcol)
897        delete(hcol); %erase existing colorbar if not needed
898    end
899else%no scalar plot
900    if ~isempty(hima) && ishandle(hima)
901        delete(hima)
902    end
903    if ~isempty(hcol)&& ishandle(hcol)
904       delete(hcol)
905    end
906%     AxeData.A=[];
907%     AxeData.AX=[];
908%     AxeData.AY=[];
909    PlotParamOut=rmfield(PlotParamOut,'Scalar');
910end
911
912%%   vector plot %%%%%%%%%%%%%%%%%%%%%%%%%%
913if test_vec
914   %vector scale representation
915    if size(vec_U,1)==numel(vec_Y) && size(vec_U,2)==numel(vec_X); % x, y  coordinate variables
916        [vec_X,vec_Y]=meshgrid(vec_X,vec_Y);
917    end   
918    vec_X=reshape(vec_X,1,numel(vec_X));%reshape in matlab vectors
919    vec_Y=reshape(vec_Y,1,numel(vec_Y));
920    vec_U=reshape(vec_U,1,numel(vec_U));
921    vec_V=reshape(vec_V,1,numel(vec_V));
922     MinMaxX=max(vec_X)-min(vec_X);
923%     MinMaxY=max(vec_Y)-min(vec_Y);
924%     AxeData.Mesh=sqrt((MinMaxX*MinMaxY)/length(vec_X));
925    if  ~isfield(PlotParam.Vectors,'AutoVec') || isequal(PlotParam.Vectors.AutoVec,0)|| ~isfield(PlotParam.Vectors,'VecScale')...
926               ||isempty(PlotParam.Vectors.VecScale)||~isa(PlotParam.Vectors.VecScale,'double') %automatic vector scale
927%         scale=[];
928        if test_false %remove false vectors
929            indsel=find(AxeData.FF==0);%indsel =indices of good vectors
930        else     
931            indsel=1:numel(vec_X);%
932        end
933        if isempty(vec_U)
934            scale=1;
935        else
936            if isempty(indsel)
937                MaxU=max(abs(vec_U));
938                MaxV=max(abs(vec_V));
939            else
940                MaxU=max(abs(vec_U(indsel)));
941                MaxV=max(abs(vec_V(indsel)));
942            end
943            scale=MinMaxX/(max(MaxU,MaxV)*50);
944            PlotParam.Vectors.VecScale=scale;%update the 'scale' display
945        end
946    else
947        scale=PlotParam.Vectors.VecScale;  %impose the length of vector representation
948    end;
949   
950    %record vectors on the plotting axes
951    if test_C==0
952        vec_C=ones(1,numel(vec_X));
953    end
954%     AxeData.X=vec_X';
955%     AxeData.Y=vec_Y';
956%     AxeData.U=vec_U';
957%     AxeData.V=vec_V';
958%     AxeData.C=vec_C';
959%     if isempty(ivar_F)
960%         AxeData.F=[];
961%     else
962%         AxeData.F=vec_F';
963%     end
964%     if isempty(ivar_FF)
965%         AxeData.FF=[];
966%     else
967%         AxeData.FF=vec_FF';
968%     end
969   
970    %decimate by a factor 2 in vector mesh(4 in nbre of vectors)
971    if isfield(PlotParam.Vectors,'decimate4') && isequal(PlotParam.Vectors.decimate4,1)
972        diffy=diff(vec_Y); %difference dy=vec_Y(i+1)-vec_Y(i)
973        dy_thresh=max(abs(diffy))/2;
974        ind_jump=find(abs(diffy) > dy_thresh); %indices with diff(vec_Y)> max/2, detect change of line
975        ind_sel=1:ind_jump(1);%select the first line
976        for i=2:2:length(ind_jump)-1
977            ind_sel=[ind_sel (ind_jump(i)+1:ind_jump(i+1))];% select the odd lines
978        end
979        nb_sel=length(ind_sel);
980        ind_sel=ind_sel(1:2:nb_sel);% take half the points on a line
981        vec_X=vec_X(ind_sel);
982        vec_Y=vec_Y(ind_sel);
983        vec_U=vec_U(ind_sel);
984        vec_V=vec_V(ind_sel);
985        vec_C=vec_C(ind_sel);
986        if ~isempty(ivar_F)
987           vec_F=vec_F(ind_sel);
988        end
989        if ~isempty(ivar_FF)
990           vec_FF=vec_FF(ind_sel);
991        end
992    end
993   
994    %get main level color code
995    [colorlist,col_vec,PlotParamOut.Vectors]=set_col_vec(PlotParam.Vectors,vec_C);
996   
997    % take flags into account: add flag colors to the list of colors
998    sizlist=size(colorlist);
999    nbcolor=sizlist(1);
1000    if test_black
1001       nbcolor=nbcolor+1;
1002       colorlist(nbcolor,:)=[0 0 0]; %add black to the list of colors
1003       if ~isempty(ivar_FF)
1004            ind_flag=find(vec_F~=1 & vec_F~=0 & vec_FF==0);  %flag warning but not false
1005       else
1006            ind_flag=find(vec_F~=1 & vec_F~=0);
1007       end
1008       col_vec(ind_flag)=nbcolor;   
1009    end
1010    nbcolor=nbcolor+1;
1011    if ~isempty(ivar_FF)
1012        ind_flag=find(vec_FF~=0);
1013        if isfield(PlotParam.Vectors,'HideFalse') && PlotParam.Vectors.HideFalse==1
1014            colorlist(nbcolor,:)=[NaN NaN NaN];% no plot of false vectors
1015        else
1016            colorlist(nbcolor,:)=[1 0 1];% magenta color
1017        end
1018        col_vec(ind_flag)=nbcolor;
1019    end
1020    %plot vectors:
1021    quiresetn(haxes,vec_X,vec_Y,vec_U,vec_V,scale,colorlist,col_vec);   
1022
1023else
1024    hvec=findobj(haxes,'Tag','vel');
1025    if ~isempty(hvec)
1026        delete(hvec);
1027    end
1028%     AxeData.X=[];
1029%     AxeData.Y=[];
1030%     AxeData.U=[];
1031%     AxeData.V=[];
1032%     AxeData.C=[];
1033%     AxeData.W=[];
1034%     AxeData.F=[];
1035%      AxeData.FF=[];
1036%     AxeData.Mesh=[];
1037    PlotParamOut=rmfield(PlotParamOut,'Vectors');
1038end
1039% if isfield(Data,'Z')
1040%     AxeData.Z=Data.Z;% A REVOIR
1041% end
1042listfields={'AY','AX','A','X','Y','U','V','C','W','F','FF'};
1043listdim={'AY','AX',{'AY','AX'},'nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors'};
1044Role={'coord_y','coord_x','scalar','coord_x','coord_y','vector_x','vector_y','scalar','vector_z','warnflag','errorflag'};
1045%ind_select=[];
1046nbvar=0;
1047% AxeData.ListVarName={};
1048% AxeData.VarDimName={};
1049% AxeData.VarAttribute={};
1050% for ilist=1:numel(listfields)
1051%     eval(['testvar=isfield(AxeData,listfields{ilist}) && ~isempty(AxeData.' listfields{ilist} ');'])
1052%     if testvar
1053%         nbvar=nbvar+1;
1054%         AxeData.ListVarName{nbvar}=listfields{ilist};
1055%         AxeData.VarDimName{nbvar}=listdim{ilist};
1056%         AxeData.VarAttribute{nbvar}.Role=Role{ilist};
1057%     end
1058% end
1059%store the coordinate extrema occupied by the field
1060test_lim=0;
1061if test_vec
1062    Xlim=[min(vec_X) max(vec_X)];
1063    Ylim=[min(vec_Y) max(vec_Y)];
1064    test_lim=1;
1065    if test_ima%both background image and vectors coexist, take the wider bound
1066        Xlim(1)=min(AX(1),Xlim(1));
1067        Xlim(2)=max(AX(end),Xlim(2));
1068        Ylim(1)=min(AY(end),Ylim(1));
1069        Ylim(2)=max(AY(1),Ylim(2));
1070    end
1071elseif test_ima %only image plot
1072    Xlim(1)=min(AX(1),AX(end));
1073    Xlim(2)=max(AX(1),AX(end));
1074    Ylim(1)=min(AY(1),AY(end));
1075    Ylim(2)=max(AY(1),AY(end));
1076    test_lim=1;
1077end
1078AxeData.RangeX=Xlim;
1079AxeData.RangeY=Ylim;
1080% adjust the size of the plot to include the whole field, except if PlotParam.FixedLimits=1
1081if ~(isfield(PlotParam,'FixedLimits') && PlotParam.FixedLimits) && test_lim
1082        if Xlim(2)>Xlim(1)
1083            set(haxes,'XLim',Xlim);% set x limits of frame in axes coordinates
1084        end
1085        if Ylim(2)>Ylim(1)
1086            set(haxes,'YLim',Ylim);% set y limits of frame in axes coordinate
1087        end
1088end
1089if ~(isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1))
1090     set(haxes,'DataAspectRatio',[1 1 1])
1091end
1092set(haxes,'YDir','normal')
1093set(get(haxes,'XLabel'),'String',[XName x_units]);
1094set(get(haxes,'YLabel'),'String',[YName y_units]);
1095
1096%-------------------------------------------------------------------
1097% --- function for plotting vectors
1098%INPUT:
1099% haxes: handles of the plotting axes
1100% x,y,u,v: vectors coordinates and vector components to plot, arrays withb the same dimension
1101% scale: scaling factor for vector length representation
1102% colorlist(icolor,:): list of vector colors, dim (nbcolor,3), depending on color #i
1103% col_vec: matlab vector setting the color number #i for each velocity vector
1104function quiresetn(haxes,x,y,u,v,scale,colorlist,col_vec)
1105%-------------------------------------------------------------------
1106%define arrows
1107theta=0.5 ;%angle arrow
1108alpha=0.3 ;%length arrow
1109rot=alpha*[cos(theta) -sin(theta); sin(theta) cos(theta)]';
1110%find the existing lines
1111%h=findobj(gca,'Type','Line');% search existing lines in the current axes
1112h=findobj(haxes,'Tag','vel');% search existing lines in the current axes
1113sizh=size(h);
1114set(h,'EraseMode','xor');
1115set(haxes,'NextPlot','replacechildren');
1116     
1117%drawnow
1118%create lines (if no lines) or modify them
1119if ~isequal(size(col_vec),size(x))
1120    col_vec=ones(size(x));% case of error in col_vec input
1121end
1122sizlist=size(colorlist);
1123ncolor=sizlist(1);
1124
1125for icolor=1:ncolor
1126    %determine the line positions for each color icolor
1127    ind=find(col_vec==icolor);
1128    xc=x(ind);
1129    yc=y(ind);
1130    uc=u(ind)*scale;
1131    vc=v(ind)*scale;
1132    n=size(xc);
1133    xN=NaN*ones(size(xc));
1134    matx=[xc(:)-uc(:)/2 xc(:)+uc(:)/2 xN(:)]';
1135%     matx=[xc(:) xc(:)+uc(:) xN(:)]';
1136    matx=reshape(matx,1,3*n(2));
1137    maty=[yc(:)-vc(:)/2 yc(:)+vc(:)/2 xN(:)]';
1138%     maty=[yc(:) yc(:)+vc(:) xN(:)]';
1139    maty=reshape(maty,1,3*n(2));
1140   
1141    %determine arrow heads
1142    arrowplus=rot*[uc;vc];
1143    arrowmoins=rot'*[uc;vc];
1144    x1=xc+uc/2-arrowplus(1,:);
1145    x2=xc+uc/2;
1146    x3=xc+uc/2-arrowmoins(1,:);
1147    y1=yc+vc/2-arrowplus(2,:);
1148    y2=yc+vc/2;
1149    y3=yc+vc/2-arrowmoins(2,:);
1150%     x1=xc+uc-arrowplus(1,:);
1151%     x2=xc+uc;
1152%     x3=xc+uc-arrowmoins(1,:);
1153%     y1=yc+vc-arrowplus(2,:);
1154%     y2=yc+vc;
1155%     y3=yc+vc-arrowmoins(2,:);
1156    matxar=[x1(:) x2(:) x3(:) xN(:)]';
1157    matxar=reshape(matxar,1,4*n(2));
1158    matyar=[y1(:) y2(:) y3(:) xN(:)]';
1159    matyar=reshape(matyar,1,4*n(2));
1160    %draw the line or modify the existing ones
1161      hx = [x1;x2;x3];
1162      hy = [y1;y2;y3];
1163    tri=reshape(1:3*length(uc),3,[])';
1164    d = tri(:,[1 2 3 1])';
1165   
1166    isn=isnan(colorlist(icolor,:));%test if color NaN
1167    if 2*icolor > sizh(1) %if icolor exceeds the number of existing ones
1168        %axes(haxes)
1169      %  hfig=get(haxes,'parent');
1170%         axes(haxes)
1171      %  set(0,'CurrentFigure',hfig)
1172       % set(hfig,'CurrentAxes',haxes)
1173        if ~isn(1) %if the vectors are visible color not nan
1174            if n(2)>0
1175                hold on
1176                line(matx,maty,'Color',colorlist(icolor,:),'Tag','vel');% plot new lines
1177                line(matxar,matyar,'Color',colorlist(icolor,:),'Tag','vel');% plot arrows
1178%                 fill(hx(d),hy(d),colorlist(icolor,:),'EdgeColor','none','
1179%                 Tag','Vel');
1180          end
1181        end
1182    else
1183        if isn(1)
1184            delete(h(2*icolor-1))
1185            delete(h(2*icolor))
1186        else
1187            set(h(2*icolor-1),'Xdata',matx,'Ydata',maty);
1188            set(h(2*icolor-1),'Color',colorlist(icolor,:));
1189            set(h(2*icolor-1),'EraseMode','xor');
1190            set(h(2*icolor),'Xdata',matxar,'Ydata',matyar);
1191            set(h(2*icolor),'Color',colorlist(icolor,:));
1192            set(h(2*icolor),'EraseMode','xor');
1193        end
1194     end
1195end
1196if sizh(1) > 2*ncolor
1197    for icolor=ncolor+1 : sizh(1)/2%delete additional objects
1198        delete(h(2*icolor-1))
1199        delete(h(2*icolor))
1200    end
1201end
1202
1203%-------------------------------------------------------------------
1204% ---- determine tick positions for colorbar
1205function YTick=colbartick(MinA,MaxA)
1206%-------------------------------------------------------------------
1207%determine tick positions with "simple" values between MinA and MaxA
1208YTick=0;%default
1209maxabs=max([abs(MinA) abs(MaxA)]);
1210if maxabs>0
1211ord=10^(floor(log10(maxabs)));%order of magnitude
1212div=1;
1213siz2=1;
1214while siz2<2
1215%     values=[-9:div:9];
1216    values=-10:div:10;
1217    ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);%indices of 'values' such that MinA<ord*values<MaxA
1218    siz=size(ind);
1219    if siz(2)<4%if there are less than 4 selected values (4 levels)
1220        values=-9:0.5*div:9;
1221        ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);
1222    end
1223    siz2=size(ind,2);
1224%     siz2=siz(2)
1225    div=div/10;
1226end
1227YTick=ord*values(ind);
1228end
1229
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