Description of plot

0001 %'plot_field': plot any field with the structure defined in the uvmat package
0002 %------------------------------------------------------------------------
0003 %
0004 %  This function is used by uvmat to plot fields. It automatically chooses the representation
0005 % appropriate to the input field structure:
0006 %     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).
0007 %  The input field structure is first tested by check_field_structure.m,
0008 %  then split into blocks of related variables  by find_field_indices.m.
0009 %  The dimensionality of each block is obtained  by this fuction
0010 %  considering the presence of variables with the attribute .Role='coord_x'
0011 %  and/or coord_y and/or coord_z (case of unstructured coordinates), or
0012 %  dimension variables (case of matrices).
0013 %
0014 % function [PlotType,PlotParamOut,haxes]= plot_field(Data,haxes,PlotParam,KeepLim,PosColorbar)
0015 %
0016 % OUPUT:
0017 % PlotType: type of plot: 'text','line'(curve plot),'plane':2D view,'volume'
0018 % PlotParamOut: structure, representing the updated  plotting parameters, in case of automatic scaling
0019 % haxes: handle of the plotting axis, when a new figure is created.
0020 %
0021 %INPUT
0022 %    Data:   structure describing the field to plot
0023 %         (optional) .ListGlobalAttribute: cell listing the names of the global attributes
0024 %                    .Att_1,Att_2... : values of the global attributes
0025 %         (requested)  .ListVarName: list of variable names to select (cell array of  char strings {'VarName1', 'VarName2',...} )
0026 %         (requested)  .VarDimName: list of dimension names for each element of .ListVarName (cell array of string cells)
0027 %                      .VarAttribute: cell of attributes for each element of .ListVarName (cell array of structures of the form VarAtt.key=value)
0028 %         (requested) .Var1, .Var2....: variables (Matlab arrays) with names listed in .ListVarName
0029 %
0030 %            Variable attribute .Role :
0031 %    The only variable attribute used for plotting purpose is .Role which can take
0032 %    the values
0033         %       Role = 'scalar':  (default) represents a scalar field
0034         %            = 'coord_x', 'coord_y',  'coord_z': represents a separate set of
0035         %                        unstructured coordinate x, y  or z
0036         %            = 'vector': represents a vector field whose number of components
0037         %                is given by the last dimension (called 'nb_dim')
0038         %            = 'vector_x', 'vector_y', 'vector_z'  :represents the x, y or z  component of a vector
0039         %            = 'warnflag' : provides a warning flag about the quality of data in a 'Field', default=0, no warning
0040         %            = 'errorflag': provides an error flag marking false data,
0041         %                   default=0, no error. Different non zero values can represent different criteria of elimination.
0042 
0043 
0044 %         additional elements characterizing the projection object (should not be necessary)--
0045 %            Data.Style : style of projection object
0046 %            Data.XObject,.YObject: set of coordinates defining the object position;
0047 %            Data.ProjMode=type of projection ;
0048 %            Data.ProjAngle=angle of projection;
0049 %            Data.DX,.DY,.DZ=increments;
0050 %            Data.MaxY,MinY: min and max Y
0051 
0052 %   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.
0053 %
0054 %   PlotParam: parameters for plotting, as read on the uvmat interface (by function 'read_plot_param.m')
0055 %            --scalars--
0056 %    .Scalar.MaxA: upper bound (saturation color) for the scalar representation, max(field) by default
0057 %    .Scalar.MinA: lower bound (saturation) for the scalar representation, min(field) by default
0058 %    .Scalar.AutoScal: =1 (default) lower and upper bounds of the scalar representation set to the min and max of the field
0059 %               =0 lower and upper bound imposed by .AMax and .MinA
0060 %    .Scalar.BW= 1 black and white representation imposed, =0 by default.
0061 %    .Scalar.Contours= 1: represent scalars by contour plots (Matlab function 'contour'); =0 by default
0062 %    .IncrA : contour interval
0063 %            -- vectors--
0064 %    .Vectors.VecScale: scale for the vector representation
0065 %    .Vectors.AutoVec: =0 (default) automatic length for vector representation, =1: length set by .VecScale
0066 %    .Vectors.HideFalse= 0 (default) false vectors represented in magenta, =1: false vectors not represented;
0067 %    .Vectors.HideWarning= 0 (default) vectors marked by warnflag~=0 marked in black, 1: no warning representation;
0068 %    .Vectors.decimate4 = 0 (default) all vectors reprtesented, =1: half of  the vectors represented along each coordinate
0069 %         -- vector color--
0070 %    .Vectors.ColorCode= 'black','white': imposed color  (default ='blue')
0071 %                        'rgb', : three colors red, blue, green depending
0072 %                        on thresholds .colcode1 and .colcode2 on the input  scalar value (C)
0073 %                        'brg': like rgb but reversed color order (blue, green, red)
0074 %                        '64 colors': continuous color from blue to red (multijet)
0075 %    .Vectors.colcode1 : first threshold for rgb, first value for'continuous'
0076 %    .Vectors.colcode2 : second threshold for rgb, last value (saturation) for 'continuous'
0077 %    .Vectors.FixedCbounds;  =0 (default): the bounds on C representation are min and max, =1: they are fixed by .Minc and .MaxC
0078 %    .Vectors.MinC = imposed minimum of the scalar field used for vector color;
0079 %    .Vectors.MaxC = imposed maximum of the scalar field used for vector color;
0080 %
0081 % KeepLim:=0 (default) adjust axes limit to the X,Y data, =1: preserves the previous axes limits
0082 % PosColorbar: if not empty, display a colorbar for B&W images
0083 %               imposed position of the colorbar (ex [0.821 0.471 0.019 0.445])
0084 %
0085 %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
0086 %  Copyright Joel Sommeria, 2008, LEGI / CNRS-UJF-INPG, sommeria@coriolis-legi.org.
0087 %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
0088 %     This file is part of the toolbox UVMAT.
0089 %
0090 %     UVMAT is free software; you can redistribute it and/or modify
0091 %     it under the terms of the GNU General Public License as published by
0092 %     the Free Software Foundation; either version 2 of the License, or
0093 %     (at your option) any later version.
0094 %
0095 %     UVMAT is distributed in the hope that it will be useful,
0096 %     but WITHOUT ANY WARRANTY; without even the implied warranty of
0097 %     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0098 %     GNU General Public License (file UVMAT/COPYING.txt) for more details.
0099 %AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
0100 
0101 function [PlotType,PlotParamOut,haxes]= plot_field(Data,haxes,PlotParam,KeepLim,PosColorbar)
0102 %default output
0103 if ~exist('PlotParam','var'),PlotParam=[];end;
0104 if ~exist('KeepLim','var'),KeepLim=0;end;
0105 if ~exist('PosColorbar','var'),PosColorbar=[];end;
0106 PlotType='text'; %default
0107 PlotParamOut=PlotParam;%default
0108 
0109 % check input structure
0110 [Data,errormsg]=check_field_structure(Data);
0111 
0112 if ~isempty(errormsg)
0113     msgbox_uvmat('ERROR',['input of plot_field/check_field_structure: ' errormsg])
0114     display(['input of plot_field/check_field_structure:: ' errormsg])
0115     return
0116 end
0117 
0118 testnewfig=1;%test to create a new figure (default)
0119 testzoomaxes=0;%test for the existence of a zoom secondary figure attached to the plotting axes
0120 if exist('haxes','var')
0121     if ishandle(haxes)
0122         if isequal(get(haxes,'Type'),'axes')
0123 %             hfig=get(haxes,'Parent');
0124             axes(haxes)
0125             testnewfig=0;
0126             AxeData=get(haxes,'UserData');
0127             if isfield(AxeData,'ZoomAxes')&& ishandle(AxeData.ZoomAxes)
0128                 if isequal(get(AxeData.ZoomAxes,'Type'),'axes') 
0129                     testzoomaxes=1;
0130                     zoomaxes=AxeData.ZoomAxes;
0131                 end
0132             end
0133         end
0134     end
0135 end
0136 if testnewfig% create a new figure and axes if the plotting axes does not exist
0137     hfig=figure;
0138     if isfield(Data,'IndexObj')&isfield(Data,'Style')&isfield(Data,'ProjMode')
0139         figname=[num2str(Data.IndexObj) '-' set_title(Data.Style,Data.ProjMode)];
0140         set(hfig,'Name',figname)
0141     end
0142     testhandle=0;
0143     if isfield(PlotParam,'text_display_1')& ishandle(PlotParam.text_display_1)
0144         set(hfig,'UserData',PlotParam)
0145         testhandle=1;
0146     end
0147     set(hfig,'Units','normalized')
0148     set(hfig,'WindowButtonDownFcn','mouse_down')
0149     %set(hfig,'WindowButtonMotionFcn',{'mouse_motion',PlotParam})%set mouse action function
0150     set(hfig,'WindowButtonMotionFcn','mouse_motion')%set mouse action function
0151     set(hfig,'WindowButtonUpFcn','mouse_up')%set mouse action function
0152     haxes=axes;
0153     set(haxes,'position',[0.13,0.2,0.775,0.73])
0154 end
0155 if isfield(PlotParam,'text_display_1')& ishandle(PlotParam.text_display_1)
0156     PlotParam=read_plot_param(PlotParam);   
0157 end
0158 if testnewfig
0159   PlotParam.NextPlot='add'; %parameter for plot_profile and plot_hist
0160 end
0161 if isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1) 
0162     set(haxes,'DataAspectRatioMode','auto')%automatic aspect ratio
0163 end
0164 
0165 % check the cells of fields :
0166 testnbdim=1;
0167 [CellVarIndex,NbDim,VarType,errormsg]=find_field_indices(Data);
0168 
0169 if ~isempty(errormsg)
0170     msgbox_uvmat('ERROR',['input of plot_field/find_field_indices: ' errormsg])
0171     display(['input of plot_field: ' errormsg])
0172     return
0173 end
0174 if ~isfield(Data,'NbDim') %& ~isfield(Data,'Style')%determine the space dimensionb if not defined: choose the kind of plot
0175     [Data.NbDim,imax]=max(NbDim);
0176 end
0177 if isequal(Data.NbDim,0) % TODO: chech whether this function is still used, replace by plot_profile ?
0178     if isfield(Data,'Style') & isequal(Data.Style,'points')
0179         AxeData=plot_text(Data,haxes);
0180         PlotType='text';
0181     else
0182         [AxeData,haxes]=plot_hist(Data,haxes,PlotParam);
0183     end
0184 elseif isequal(Data.NbDim,1)
0185     [AxeData,haxes]=plot_profile(Data,CellVarIndex,VarType,haxes,PlotParam);%
0186     if testzoomaxes
0187         [AxeData,zoomaxes,PlotParamOut]=plot_profile(Data,CellVarIndex,VarType,zoomaxes,PlotParam);
0188         AxeData.ZoomAxes=zoomaxes;
0189     end
0190     PlotType='line';
0191 elseif isequal(Data.NbDim,2)
0192     ind_select=find(NbDim>=2);
0193     if numel(ind_select)>2
0194         msgbox_uvmat('ERROR',['more than two fields to map'])
0195         display(['more than two fields to map'])
0196         return
0197     end
0198     [AxeData,haxes,PlotParamOut,PlotType]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),haxes,PlotParam,KeepLim,PosColorbar);
0199     if testzoomaxes
0200         [AxeData,zoomaxes,PlotParamOut]=plot_plane(Data,CellVarIndex(ind_select),VarType(ind_select),zoomaxes,PlotParam,1,PosColorbar);
0201         AxeData.ZoomAxes=zoomaxes;
0202     end
0203 elseif isequal(Data.NbDim,3)
0204     msgbox_uvmat('ERROR','volume plot not implemented yet')
0205     return
0206     %plot_volume(haxes,Data,PlotParam)% A FAIRE
0207     %PlotType='volume';
0208 else
0209     testnbdim=0;
0210 end
0211 
0212 %display (or delete) error message
0213 htext=findobj(haxes,'Tag','hTxt');
0214 if isfield(Data,'Txt')
0215     if isempty(htext)
0216         Xlim=get(haxes,'XLim');
0217         Ylim=get(haxes,'YLim');
0218         htext=text(Xlim(1),(Ylim(1)+Ylim(2))/2,Data.Txt,'Tag','hTxt','Color','r');
0219         set(htext,'Interpreter','none')
0220     else
0221         set(htext,'String',Data.Txt)
0222     end
0223 elseif ~isempty(htext)
0224     delete(htext)
0225 end
0226 
0227 % set graph aspect ratio
0228 
0229 
0230 set(haxes,'UserData',AxeData)
0231 %set(haxes,'Tag','uvmat');
0232 
0233  
0234 %-------------------------------------------
0235 function [AxeData,haxes]=plot_hist(Data,haxes,PlotParam)% TODO: chech whether this function is still used, replace by plot_profile ?
0236 %------------------------------------------
0237 AxeData=get(haxes,'UserData'); %defau
0238 hfig=get(haxes,'parent');
0239 if ~isfield(Data,'ListVarName')
0240     return
0241 end
0242 ColorOrder=[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];
0243 set(haxes,'ColorOrder',ColorOrder)
0244 if isfield(PlotParam,'NextPlot')
0245     set(haxes,'NextPlot',PlotParam.NextPlot)
0246 end
0247 charplot='''-''';
0248 iplot=0;
0249 legend_str={};
0250 label_str='';
0251 textmean={};
0252 plotstr='plot(';
0253 for ilist=1:length(Data.ListVarName)
0254     VarName=Data.ListVarName{ilist}; 
0255     eval(['[' VarName 'hist,' VarName 'val]=hist(double(Data.' VarName '),100);']);%coordinate variable set as c
0256     plotstr=[plotstr VarName 'val,' VarName 'hist,' charplot ','];
0257     eval(['nbcomponent2=size(Data.' VarName ',2);']);
0258     eval(['nbcomponent1=size(Data.' VarName ',1);']);
0259     eval(['varmean=mean(double(Data.' VarName '));']);%mean value
0260     textmean=[textmean; {[VarName 'mean= ' num2str(varmean,4)]}];
0261     if nbcomponent1==1| nbcomponent2==1
0262         legend_str=[legend_str {VarName}]; %variable with one component
0263     else
0264         for ic=1:min(nbcomponent1,nbcomponent2)
0265             legend_str=[legend_str [VarName '_' num2str(ic)]]; %variable with severals  components
0266                                                                % labeled by their index (e.g. color component)
0267         end
0268     end
0269     label_str=[label_str ' ' VarName]; 
0270 end
0271 if ~isequal(plotstr,'plot(')
0272     plotstr(end)=')';
0273     eval(plotstr)
0274     hlegend=findobj(hfig,'Tag','legend');%find existing legend on the plot
0275     if ~isempty(hlegend)
0276         legend_old=get(hlegend,'String');
0277         if isequal(size(legend_old,1),size(legend_str,1))
0278              legend_str=[legend_old legend_str];
0279         end
0280     end
0281     legend(legend_str)
0282     xlabel(label_str)
0283     ylabel('nb values')
0284      grid on
0285     title_str='';
0286     if isfield(Data,'filename')
0287        [Path, title_str, ext]=fileparts(Data.filename);
0288        title_str=[title_str ext];
0289     end
0290     if isfield(Data,'Action')
0291         if ~isequal(title_str,'')
0292             title_str=[title_str ', '];
0293         end
0294         title_str=[title_str Data.Action];
0295     end
0296     htitle=title(title_str);
0297     set(htitle,'Interpreter','none')% desable tex interpreter
0298     hlist=findobj(gcf,'Style','listbox');
0299     if isempty(hlist)
0300             uicontrol('Style','popupmenu','Position',[20 20 200 20],'String',textmean);
0301     else
0302             set(hlist(1),'String',textmean)
0303     end
0304 end
0305 AxeData=Data;
0306 
0307 
0308 %----------------------------------------------------------
0309 function [AxeData,haxes]=plot_profile(data,CellVarIndex,VarType,haxes,PlotParam)
0310 %-----------------------------------------------------------
0311 axes(haxes)
0312 hfig=get(haxes,'parent');
0313 AxeData=data;
0314 ColorOrder=[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];
0315 set(haxes,'ColorOrder',ColorOrder)
0316 if isfield(PlotParam,'NextPlot')
0317     set(haxes,'NextPlot',PlotParam.NextPlot)
0318 end
0319 legend_str={};
0320 
0321 %initiates string of the plot command
0322 plotstr='plot(';
0323 textmean={};
0324 abscissa_name='';
0325 coord_x_index=[];
0326 for icell=1:length(CellVarIndex)
0327     testfalse=0;
0328     VarIndex=CellVarIndex{icell};%  indices of the selected variables in the list data.ListVarName
0329     DimCell=data.VarDimName{VarIndex(1)};
0330     if ischar(DimCell)
0331         DimCell={DimCell};
0332     end
0333     XName=DimCell{1}; %first dimension considered as abscissa
0334     coord_x_index_cell=VarType{icell}.coord(1);
0335     if isequal(coord_x_index_cell,0)
0336         continue  % the cell has no abscissa, skip it
0337     end
0338     if ~isempty(coord_x_index)&&~isequal(coord_x_index_cell,coord_x_index)
0339         continue %all the selected variables must have the same first dimension
0340     else
0341         coord_x_index=coord_x_index_cell;
0342     end
0343     testplot=ones(size(data.ListVarName));%default test for plotted variables
0344     testcoordvar=0;
0345     charplot_0='''-''';%default
0346     if isfield(data,'ObjectProjMode')& isequal(data.ObjectProjMode,'projection')
0347         charplot_0='''+''';
0348     end
0349     xtitle='';  
0350     
0351     xtitle=data.ListVarName{coord_x_index};
0352     eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
0353     if isfield(data,'VarAttribute')&& numel(data.VarAttribute)>=coord_x_index && isfield(data.VarAttribute{coord_x_index},'units')
0354          xtitle=[xtitle '(' data.VarAttribute{coord_x_index}.units ')'];
0355     end
0356     eval(['coord_x{icell}=data.' data.ListVarName{coord_x_index} ';']);%coordinate variable set as coord_x
0357     testcoordvar=1;
0358     testplot(coord_x_index)=0;
0359     if ~isempty(VarType{icell}.ancillary')
0360             testplot(VarType{icell}.ancillary)=0;
0361     end
0362     if ~isempty(VarType{icell}.warnflag')
0363             testplot(VarType{icell}.warnflag)=0;
0364     end
0365     if ~isempty(VarType{icell}.discrete')
0366          charplot_0='''+''';
0367     else
0368           charplot_0='''-''';
0369     end
0370     if testcoordvar==0
0371         coord_x{icell}=[1:data.DimValue(DimIndices(1))];%abscissa by default if no coordinate variable
0372        % charplot_0='''-''';
0373     end
0374     if isfield(data,'VarAttribute')
0375         VarAttribute=data.VarAttribute;
0376         for ivar=1:length(VarIndex) 
0377              if length(VarAttribute)>=VarIndex(ivar) & isfield(VarAttribute{VarIndex(ivar)},'long_name')
0378                  plotname{VarIndex(ivar)}=VarAttribute{VarIndex(ivar)}.long_name;
0379              else
0380                  plotname{VarIndex(ivar)}=data.ListVarName{VarIndex(ivar)};%name for display in plot A METTRE
0381              end
0382         end
0383     end
0384     for ivar=1:length(VarIndex)
0385         if testplot(VarIndex(ivar))
0386             VarName=data.ListVarName{VarIndex(ivar)};
0387             eval(['data.' VarName '=squeeze(data.' VarName ');'])
0388             if isequal(VarName,'A')
0389                 charplot='''-''';
0390             else
0391                 charplot=charplot_0;
0392             end
0393             plotstr=[plotstr 'coord_x{' num2str(icell) '},data.' VarName ',' charplot ','];
0394             eval(['nbcomponent2=size(data.' VarName ',2);']);
0395             eval(['nbcomponent1=size(data.' VarName ',1);']);
0396             eval(['varmean=mean(double(data.' VarName '));']);%mean value
0397             textmean=[textmean; {[VarName 'mean= ' num2str(varmean,4)]}];
0398             if nbcomponent1==1| nbcomponent2==1
0399                 legend_str=[legend_str {VarName}]; %variable with one component
0400             else  %variable with severals  components
0401                 for ic=1:min(nbcomponent1,nbcomponent2)
0402                     legend_str=[legend_str [VarName '_' num2str(ic)]]; %variable with severals  components
0403                 end                                                   % labeled by their index (e.g. color component)
0404             end
0405         end
0406     end
0407 end
0408 if ~isequal(plotstr,'plot(')
0409     plotstr(end)=')';
0410                 %execute plot (instruction  plotstr)
0411     eval(plotstr)
0412                 %%%%%
0413     grid on
0414     hxlabel=xlabel(xtitle);
0415     set(hxlabel,'Interpreter','none')% desable tex interpreter
0416     if length(legend_str)>=1
0417         hylabel=ylabel(legend_str{end});
0418         set(hylabel,'Interpreter','none')% desable tex interpreter
0419     end
0420     if ~isempty(legend_str)
0421         hlegend=findobj(hfig,'Tag','legend');
0422         if isempty(hlegend)
0423             hlegend=legend(legend_str);
0424             txt=ver;
0425             Release=txt(1).Release;
0426             relnumb=str2num(Release(3:4));
0427             if relnumb >= 14
0428                 set(hlegend,'Interpreter','none')% desable tex interpreter
0429             end
0430         else
0431             legend_old=get(hlegend,'String');
0432             if isequal(size(legend_old,1),size(legend_str,1))&~isequal(legend_old,legend_str)
0433                 set(hlegend,'String',[legend_old legend_str]);
0434             end
0435         end 
0436     end
0437     title_str='';
0438     if isfield(data,'filename')
0439        [Path, title_str, ext]=fileparts(data.filename);
0440        title_str=[title_str ext];
0441     end
0442     if isfield(data,'Action')
0443         if ~isequal(title_str,'')
0444             title_str=[title_str ', '];
0445         end
0446         title_str=[title_str data.Action];
0447     end
0448     htitle=title(title_str);
0449     txt=ver;
0450     Release=txt(1).Release;
0451     relnumb=str2num(Release(3:4));
0452     if relnumb >= 14
0453         set(htitle,'Interpreter','none')% desable tex interpreter
0454     end
0455     % A REPRENDRE Mean
0456 %         hlist=findobj(gcf,'Style','listbox','Tag','liststat');
0457 %         if isempty(hlist)
0458 %             'text'
0459 %             textmean
0460 %             set(gca,'position',[0.13,0.2,0.775,0.73])
0461 %             uicontrol('Style','popupmenu','Position',[20 20 200 20],'String',textmean,'Tag','liststat');
0462 %         else
0463 %             set(hlist(1),'String',textmean)
0464 %         end
0465 end
0466 
0467 
0468 %---------------------------------------
0469 % plot_plane
0470 %----------------------------------------
0471 function [AxeData,haxes,PlotParamOut,PlotType]=plot_plane(Data,CellVarIndex,VarTypeCell,haxes,PlotParam,KeepLim,PosColorbar)
0472 
0473 %default plotting parameters
0474 PlotType='plane';%default
0475 if ~exist('PlotParam','var')
0476     PlotParam=[];
0477 end
0478 if ~isfield(PlotParam,'Scalar')
0479     PlotParam.Scalar=[];
0480 end
0481 if ~isfield(PlotParam,'Vectors')
0482     PlotParam.Vectors=[];
0483 end
0484 PlotParamOut=PlotParam;%default
0485 
0486 %plotting axes
0487 hfig=get(haxes,'parent');
0488 hcol=findobj(hfig,'Tag','Colorbar'); %look for colorbar axes
0489 hima=findobj(haxes,'Tag','ima');% search existing image in the current axes
0490 AxeData=get(haxes,'UserData'); %default
0491 if ~isstruct(AxeData)% AxeData must be a structure
0492     AxeData=[];
0493 end
0494 AxeData.NbDim=2;
0495 if isfield(Data,'ObjectCoord')
0496     AxeData.ObjectCoord=Data.ObjectCoord;
0497 end
0498 
0499 test_ima=0; %default: test for image or map plot
0500 test_vec=0; %default: test for vector plots
0501 test_black=0;
0502 test_false=0;
0503 test_C=0;
0504 for icell=1:length(CellVarIndex) % length(CellVarIndex) =1 or 2 (from the calling function)
0505 %     VarIndex=CellVarIndex{icell};
0506     VarType=VarTypeCell{icell};
0507     ivar_X=VarType.coord_x; % defines (unique) index for the variable representing unstructured x coordinate (default =[])
0508     ivar_Y=VarType.coord_y; % defines (unique)index for the variable representing unstructured y coordinate (default =[])
0509     ivar_U=VarType.vector_x; % defines (unique) index for the variable representing x vector component (default =[])
0510     ivar_V=VarType.vector_y; % defines (unique) index for the variable representing y vector component (default =[])
0511     ivar_C=[VarType.scalar VarType.image VarType.color VarType.ancillary]; %defines index (indices) for the scalar or ancillary fields
0512     if numel(ivar_C)>1
0513         msgbox_uvmat('ERROR','too many scalar inputs in plot_field.m')
0514         return
0515     end
0516     ivar_F=VarType.warnflag; %defines index (unique) for warning flag variable
0517     ivar_FF=VarType.errorflag; %defines index (unique) for error flag variable
0518     idim_Y=[];  
0519     test_grid=0;
0520     if ~isempty(ivar_U) && ~isempty(ivar_V)% vector components detected
0521         if test_vec
0522             msgbox_uvmat('ERROR','attempt to plot two vector fields')
0523             return
0524         else
0525             test_vec=1;
0526             eval(['vec_U=Data.' Data.ListVarName{ivar_U} ';']) 
0527             eval(['vec_V=Data.' Data.ListVarName{ivar_V} ';']) 
0528             if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)
0529                 eval(['vec_X=Data.' Data.ListVarName{ivar_X} ';']) 
0530                 eval(['vec_Y=Data.' Data.ListVarName{ivar_Y} ';'])
0531             elseif numel(VarType.coord)==2 & VarType.coord~=[0 0];%coordinates defines by dimension variables
0532                 eval(['y=Data.' Data.ListVarName{VarType.coord(1)} ';']) 
0533                 eval(['x=Data.' Data.ListVarName{VarType.coord(2)} ';'])
0534                 if numel(y)==2 % y defined by first and last values on aregular mesh
0535                     y=linspace(y(1),y(2),size(vec_U,1));
0536                 end
0537                 if numel(x)==2 % y defined by first and last values on aregular mesh
0538                     x=linspace(x(1),x(2),size(vec_U,2));
0539                 end
0540                 [vec_X,vec_Y]=meshgrid(x,y);  
0541             else
0542                 msgbox_uvmat('ERROR','error in plot_field: bad coordinate definition for vector field')
0543                 return
0544             end
0545             if ~isempty(ivar_C)
0546                  eval(['vec_C=Data.' Data.ListVarName{ivar_C} ';']) ;
0547                  vec_C=reshape(vec_C,1,numel(vec_C));
0548                  test_C=1;
0549             end
0550             if ~(isfield(PlotParam.Vectors,'HideWarning')&& isequal(PlotParam.Vectors.HideWarning,1))&&~isempty(ivar_F) &&~test_black
0551                 if numel(ivar_F)>1
0552                     warndlg_uvmat('multiple warning flags in plot_field.m, make a selection','ERROR')
0553                     return
0554                 elseif test_vec
0555                     eval(['AxeData.F=Data.' Data.ListVarName{ivar_F} ';']) % flags for false vectors
0556                     test_black=1;
0557                 end
0558             end
0559             if ~isempty(ivar_FF) && ~test_false
0560                if numel(ivar_FF)>1
0561                     warndlg_uvmat('multiple error flags in plot_field.m, make a selection','ERROR')
0562                     return
0563                else %A VOIR CAS IMAGES
0564                     eval(['AxeData.FF=Data.' Data.ListVarName{ivar_FF} ';']) % flags for false vectors
0565                     test_false=1;
0566                end
0567             end
0568         end
0569     elseif ~isempty(ivar_C) %scalar or image
0570         if test_ima
0571              msgbox_uvmat('ERROR','attempt to plot two scalar fields or images')
0572             return
0573         end
0574         eval(['A=Data.' Data.ListVarName{ivar_C} ';']) ;% scalar represented as color image
0575         test_ima=1;
0576         if ~isempty(ivar_X) && ~isempty(ivar_Y)% 2D field (with unstructured coordinates or structured ones (then ivar_X and ivar_Y empty)
0577             eval(['AX=Data.' Data.ListVarName{ivar_X} ';']) 
0578             eval(['AY=Data.' Data.ListVarName{ivar_Y} ';'])
0579             [A,AX,AY]=proj_grid(AX',AY',A',[],[],'np>256');  % interpolate on a grid
0580         elseif numel(VarType.coord)>=2 & VarType.coord(1:2)~=[0 0];%structured coordinates
0581             eval(['AY=Data.' Data.ListVarName{VarType.coord(1)} ';']) 
0582             eval(['AX=Data.' Data.ListVarName{VarType.coord(2)} ';'])
0583             test_interp_X=0; %default, regularly meshed X coordinate
0584             test_interp_Y=0; %default, regularly meshed Y coordinate
0585             if numel(AY)>2
0586                 DAY=diff(AY);
0587                 DAY_min=min(DAY);
0588                 DAY_max=max(DAY);
0589                 if sign(DAY_min)~=sign(DAY_max);% =1 for increasing values, 0 otherwise
0590                      errormsg=['errror in plot_field.m: non monotonic dimension variable # ' ListVarName{VarType.coord(1)} ];
0591                       return
0592                 end 
0593                 test_interp_Y=(DAY_max-DAY_min)> 0.0001*abs(DAY_max);
0594             end
0595             if numel(AX)>2
0596                 DAX=diff(AX);
0597                 DAX_min=min(DAX);
0598                 DAX_max=max(DAX);
0599                 if sign(DAX_min)~=sign(DAX_max);% =1 for increasing values, 0 otherwise
0600                      errormsg=['errror in plot_field.m: non monotonic dimension variable # ' ListVarName{VarType.coord(2)} ];
0601                       return
0602                 end 
0603                 test_interp_X=(DAX_max-DAX_min)> 0.0001*abs(DAX_max);
0604             end  
0605             if test_interp_Y          
0606                 npxy(1)=max([256 floor((AY(end)-AY(1))/DAY_min) floor((AY(end)-AY(1))/DAY_max)]);
0607                 yI=linspace(AY(1),AY(end),npxy(1));
0608                 if ~test_interp_X
0609                     xI=linspace(AX(1),AX(2),size(A,2));%default
0610                     AX=xI;
0611                 end
0612             end
0613             if test_interp_X  
0614                 npxy(1)=max([256 floor((AX(end)-AX(1))/DAX_min) floor((AX(end)-AX(1))/DAX_max)]);
0615                 xI=linspace(AX(1),AX(end),npxy(2));   
0616                 if ~test_interp_Y
0617                    yI=linspace(AY(1),AY(end),size(A,1)); 
0618                    AY=yI;
0619                 end
0620             end
0621             if test_interp_X || test_interp_Y               
0622                 [AX2D,AY2D]=meshgrid(AX,AY);
0623                 A=interp2(AX2D,AY2D,double(A),xI,yI');
0624             end
0625             AX=[AX(1) AX(end)];% keep only the lower and upper bounds for image represnetation
0626             AY=[AY(1) AY(end)];
0627         else
0628             msgbox_uvmat('ERROR','bad coordinate definition for vector field')
0629             return
0630         end
0631     end       
0632     if isfield(Data,'VarAttribute')
0633         VarAttribute=Data.VarAttribute;
0634     end    
0635 end 
0636 
0637 %%%%%%%%%%%%%%%%%%%%%   image or scalar plot %%%%%%%%%%%%%%%%%%%%%%%%%%
0638 
0639 if ~isfield(PlotParam.Scalar,'Contours')
0640     PlotParam.Scalar.Contours=0; %default
0641 end
0642 PlotParamOut=PlotParam; %default
0643 if test_ima
0644     % distinguish B/W and color images
0645     np=size(A);%size of image
0646     siz=size(np);
0647     %set the color map
0648     if siz(2)==2 %for black and white images
0649         if ~isfield(PlotParam.Scalar,'AutoScal')
0650             PlotParam.Scalar.AutoScal=0;%default
0651         end
0652         if ~isfield(PlotParam.Scalar,'MinA')
0653             PlotParam.Scalar.MinA=[];%default
0654         end
0655         if ~isfield(PlotParam.Scalar,'MaxA')
0656             PlotParam.Scalar.MaxA=[];%default
0657         end
0658         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
0659             MinA=double(min(min(A)));
0660         else
0661             MinA=PlotParam.Scalar.MinA;  
0662         end; 
0663         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
0664             MaxA=double(max(max(A)));
0665         else
0666             MaxA=PlotParam.Scalar.MaxA;  
0667         end; 
0668         PlotParamOut.Scalar.MinA=MinA;
0669         PlotParamOut.Scalar.MaxA=MaxA;
0670         axes(haxes)
0671         if isequal(PlotParam.Scalar.Contours,1)
0672             if ~isempty(hima) & ishandle(hima)
0673                 delete(hima)
0674             end
0675             if ~isfield(PlotParam.Scalar,'IncrA')
0676                 PlotParam.Scalar.IncrA=[];
0677             end
0678             if isempty(PlotParam.Scalar.IncrA)% | PlotParam.Scalar.AutoScal==0
0679                 cont=colbartick(MinA,MaxA);
0680                 intercont=cont(2)-cont(1);%default
0681                 PlotParamOut.Scalar.IncrA=intercont;
0682             else
0683                intercont=PlotParam.Scalar.IncrA;
0684             end
0685             B=A;            
0686             abscontmin=intercont*floor(MinA/intercont);
0687             abscontmax=intercont*ceil(MaxA/intercont);
0688             contmin=intercont*floor(min(min(B))/intercont);
0689             contmax=intercont*ceil(max(max(B))/intercont);
0690             cont_pos_plus=[0:intercont:contmax];
0691             cont_pos_min=[double(contmin):intercont:-intercont];
0692             cont_pos=[cont_pos_min cont_pos_plus];
0693             sizpx=(AX(end)-AX(1))/(np(2)-1);
0694             sizpy=(AY(1)-AY(end))/(np(1)-1);
0695             x_cont=[AX(1):sizpx:AX(end)]; % pixel x coordinates for image display
0696             y_cont=[AY(1):-sizpy:AY(end)]; % pixel x coordinates for image display
0697             txt=ver;%version of Matlab
0698             Release=txt(1).Release;
0699             relnumb=str2num(Release(3:4));
0700             if relnumb >= 14
0701                     vec=linspace(0,1,(abscontmax-abscontmin)/intercont);%define a greyscale colormap with steps intercont
0702                 map=[vec' vec' vec'];
0703                 colormap(map);
0704                 [var,hcontour]=contour(x_cont,y_cont,B,cont_pos);        
0705                 set(hcontour,'Fill','on')
0706                 set(hcontour,'LineStyle','none')
0707                 hold on
0708             end
0709             [var_p,hcontour_p]=contour(x_cont,y_cont,B,cont_pos_plus,'k-');
0710             hold on
0711             [var_m,hcontour_m]=contour(x_cont,y_cont,B,cont_pos_min,':');
0712             set(hcontour_m,'LineColor',[1 1 1])
0713             hold off
0714             caxis([abscontmin abscontmax]) 
0715             colormap(map);
0716         end
0717         if ~isequal(PlotParam.Scalar.Contours,1)       
0718             % rescale the grey levels with min and max, put a grey scale colorbar
0719             if (isfield(PlotParam.Scalar,'BW')& (isequal(PlotParam.Scalar.BW,1))|isa(A,'uint8')| isa(A,'uint16'))%images
0720                 B=A;
0721                 vec=linspace(0,1,255);%define a linear greyscale colormap
0722                 map=[vec' vec' vec'];
0723                 colormap(map);  %grey scale color map
0724             else
0725                 B=A;
0726                 colormap('default'); % standard faulse colors for div, vort , scalar fields
0727             end
0728         end
0729     elseif siz(2)==3 %color images
0730         axes(haxes)
0731         B=uint8(A); 
0732         MinA=0;
0733         MaxA=255;
0734     end
0735     if ~isequal(PlotParam.Scalar.Contours,1)
0736         %interpolate to increase resolution
0737         test_interp=1;
0738         if max(np) <= 64 
0739             npxy=8*np;% increase the resolution 8 times
0740         elseif max(np) <= 128 
0741             npxy=4*np;% increase the resolution 4 times
0742         elseif max(np) <= 256 
0743             npxy=2*np;% increase the resolution 2 times
0744         else
0745             npxy=np;
0746             test_interp=0; % no interpolation done
0747         end
0748         if test_interp==1%if we interpolate
0749             x=[AX(1):(AX(2)-AX(1))/(np(2)-1):AX(2)];
0750             y=[AY(1):(AY(2)-AY(1))/(np(1)-1):AY(2)];
0751             [X,Y]=meshgrid(x,y);
0752 %             xi=[AX(1):(AX(2)-AX(1))/(npxy(2)-1):AX(2)];
0753 %             yi=[AY(1):(AY(2)-AY(1))/(npxy(1)-1):AY(2)];
0754 
0755             xi=linspace(AX(1),AX(2),npxy(2));
0756             yi=linspace(AY(1),AY(2),npxy(1));
0757             B = interp2(X,Y,double(B),xi,yi');
0758         end        
0759         if isempty(hima)
0760             tag=get(haxes,'Tag');
0761             hima=imagesc(AX,AY,B,[MinA MaxA]);
0762             set(hima,'Tag','ima','HitTest','off')
0763             set(haxes,'Tag',tag);%preserve the axes tag (removed by image fct !!!)
0764             %axis(haxes,'image'); % preserve the image aspect ratio     %TESTMOD
0765         else
0766             set(hima,'CData',B);
0767             if MinA<MaxA
0768                 caxis([MinA MaxA])
0769             else
0770                 caxis([MinA MinA+1])
0771             end
0772             set(hima,'XData',AX);
0773             set(hima,'YData',AY);
0774         end
0775     end
0776     if ~isstruct(AxeData)
0777         AxeData=[];
0778     end
0779     AxeData.A=A;
0780     AxeData.AX=[AX(1) AX(end)];
0781     AxeData.AY=[AY(1) AY(end)];
0782     test_ima=1;
0783     %display the colorbar code for B/W images if Poscolorbar not empty
0784     if siz(2)==2 & exist('PosColorbar','var')& ~isempty(PosColorbar)
0785         if isempty(hcol)|~ishandle(hcol)
0786              hcol=colorbar;%create new colorbar
0787         end
0788         if length(PosColorbar)==4
0789                  set(hcol,'Position',PosColorbar)           
0790         end 
0791         YTick=0;%default
0792         if MaxA>MinA
0793             if isequal(PlotParam.Scalar.Contours,1)
0794                 colbarlim=get(hcol,'YLim');
0795                 scale_bar=(colbarlim(2)-colbarlim(1))/(abscontmax-abscontmin);                
0796                 YTick=cont_pos(2:end-1);
0797                 YTick_scaled=colbarlim(1)+scale_bar*(YTick-abscontmin);
0798                 set(hcol,'YTick',YTick_scaled);
0799             elseif (isfield(PlotParam.Scalar,'BW') & isequal(PlotParam.Scalar.BW,1))|isa(A,'uint8')| isa(A,'uint16')%images
0800                 hi=get(hcol,'children');
0801                 if iscell(hi)%multiple images in colorbar
0802                     hi=hi{1};
0803                 end
0804                 set(hi,'YData',[MinA MaxA])
0805                 set(hi,'CData',[1:256]')
0806                 set(hcol,'YLim',[MinA MaxA])
0807                 YTick=colbartick(MinA,MaxA);
0808                 set(hcol,'YTick',YTick)                
0809             else
0810                 hi=get(hcol,'children');
0811                 if iscell(hi)%multiple images in colorbar
0812                     hi=hi{1};
0813                 end
0814                 set(hi,'YData',[MinA MaxA])
0815                 set(hi,'CData',[1:64]')
0816                 YTick=colbartick(MinA,MaxA); 
0817                 set(hcol,'YLim',[MinA MaxA])
0818                 set(hcol,'YTick',YTick)
0819             end
0820             set(hcol,'Yticklabel',num2str(YTick'));
0821         end
0822     elseif ishandle(hcol)
0823         delete(hcol); %erase existing colorbar if not needed
0824     end
0825 else%no scalar plot
0826     if ~isempty(hima) && ishandle(hima) 
0827         delete(hima)
0828     end
0829     if ~isempty(hcol)&& ishandle(hcol)
0830        delete(hcol)
0831     end
0832     AxeData.A=[];
0833     AxeData.AX=[];
0834     AxeData.AY=[];
0835     PlotParamOut=rmfield(PlotParamOut,'Scalar');
0836 end
0837 
0838 %%%%%%%%%%%%%%%%%%%%%   vector plot %%%%%%%%%%%%%%%%%%%%%%%%%%
0839 if test_vec
0840    %vector scale representation
0841     if size(vec_U,1)==numel(vec_Y) && size(vec_U,2)==numel(vec_X); % x, y  coordinate variables
0842         [vec_X,vec_Y]=meshgrid(vec_X,vec_Y);
0843     end   
0844     vec_X=reshape(vec_X,1,numel(vec_X));%reshape in matlab vectors
0845     vec_Y=reshape(vec_Y,1,numel(vec_Y));
0846     vec_U=reshape(vec_U,1,numel(vec_U));
0847     vec_V=reshape(vec_V,1,numel(vec_V));
0848     MinMaxX=max(vec_X)-min(vec_X);
0849     MinMaxY=max(vec_Y)-min(vec_Y);
0850     AxeData.Mesh=sqrt((MinMaxX*MinMaxY)/length(vec_X));
0851     if  ~isfield(PlotParam.Vectors,'AutoVec') || isequal(PlotParam.Vectors.AutoVec,0)|| ~isfield(PlotParam.Vectors,'VecScale')...
0852                ||isempty(PlotParam.Vectors.VecScale)||~isa(PlotParam.Vectors.VecScale,'double') %automatic vector scale
0853         scale=[];
0854         if test_false %remove false vectors
0855             indsel=find(AxeData.FF==0);%indsel =indices of good vectors
0856         else     
0857             indsel=[1:numel(vec_X)];%
0858         end
0859         if isempty(vec_U)
0860             scale=1;
0861         else
0862             if isempty(indsel)
0863                 MaxU=max(abs(vec_U));
0864                 MaxV=max(abs(vec_V));
0865             else
0866                 MaxU=max(abs(vec_U(indsel)));
0867                 MaxV=max(abs(vec_V(indsel)));
0868             end
0869             scale=MinMaxX/(max(MaxU,MaxV)*50);
0870             PlotParam.Vectors.VecScale=scale;%update the 'scale' display
0871         end
0872     else
0873         scale=PlotParam.Vectors.VecScale;  %impose the length of vector representation
0874     end;
0875     
0876     %record vectors on the plotting axes
0877     if test_C==0
0878         vec_C=ones(1,numel(vec_X));
0879     end
0880     AxeData.X=vec_X';
0881     AxeData.Y=vec_Y';
0882     AxeData.U=vec_U';
0883     AxeData.V=vec_V';
0884     AxeData.C=vec_C';
0885     if isfield(Data,'W')
0886         AxeData.W=Data.W;
0887     end
0888     
0889     %decimate by a factor 2 in vector mesh(4 in nbre of vectors)
0890     if isfield(PlotParam.Vectors,'decimate4')&isequal(PlotParam.Vectors.decimate4,1)
0891         diffy=diff(vec_Y); %difference dy=vec_Y(i+1)-vec_Y(i)
0892         dy_thresh=max(abs(diffy))/2; 
0893         ind_jump=find(abs(diffy) > dy_thresh); %indices with diff(vec_Y)> max/2, detect change of line
0894         ind_sel=[1:ind_jump(1)];%select the first line
0895         for i=2:2:length(ind_jump)-1
0896             ind_sel=[ind_sel [ind_jump(i)+1:ind_jump(i+1)]];% select the odd lines
0897         end
0898         nb_sel=length(ind_sel);
0899         ind_sel=ind_sel([1:2:nb_sel]);% take half the points on a line
0900         vec_X=vec_X(ind_sel);
0901         vec_Y=vec_Y(ind_sel);
0902         vec_U=vec_U(ind_sel);
0903         vec_V=vec_V(ind_sel);
0904         vec_C=vec_C(ind_sel);
0905         if isfield(Data,'F')&& isequal(size(Data.F),size(vec_X))sdfsdf
0906             Data.F=Data.F(ind_sel);
0907         end
0908         if isfield(Data,'FF')&& isequal(size(Data.FF),size(vec_X))
0909             Data.FF=Data.FF(ind_sel);
0910         end
0911     end
0912     
0913     %get main level color code
0914     [colorlist,col_vec,PlotParamOut.Vectors]=set_col_vec(PlotParam.Vectors,vec_C);
0915     % take flags into account: add flag colors to the list of colors
0916     sizlist=size(colorlist);
0917     nbcolor=sizlist(1);
0918     if test_black && isfield (Data,'F')
0919        nbcolor=nbcolor+1;
0920        colorlist(nbcolor,:)=[0 0 0]; %add black to the list of colors
0921        if isfield(Data,'FF')
0922             ind_flag=find(Data.F~=1 & Data.FF==0);  %flag warning but not faulse
0923        else
0924             ind_flag=find(Data.F~=1);
0925        end
0926        col_vec(ind_flag)=nbcolor;    
0927     end
0928     nbcolor=nbcolor+1;
0929     if test_false && isfield (Data,'FF')
0930         ind_flag=find(Data.FF~=0);
0931         if isfield(PlotParam.Vectors,'HideFalse') & PlotParam.Vectors.HideFalse==1
0932             colorlist(nbcolor,:)=[NaN NaN NaN];% no plot of false vectors
0933         else
0934             colorlist(nbcolor,:)=[1 0 1];% magenta color
0935         end
0936         col_vec(ind_flag)=nbcolor;
0937     end
0938     %plot vectors:
0939     quiresetn(haxes,vec_X,vec_Y,vec_U,vec_V,scale,colorlist,col_vec);   
0940 else
0941     hvec=findobj(haxes,'Tag','vel');
0942     if ~isempty(hvec)
0943         delete(hvec);
0944     end
0945     AxeData.X=[];
0946     AxeData.Y=[];
0947     AxeData.U=[];
0948     AxeData.V=[];
0949     AxeData.C=[];
0950     AxeData.W=[];
0951     AxeData.Mesh=[];
0952     PlotParamOut=rmfield(PlotParamOut,'Vectors');
0953 end
0954 if isfield(Data,'Z')
0955     AxeData.Z=Data.Z;% A REVOIR
0956 end
0957 listfields={'AY','AX','A','X','Y','U','V','C','W','F','FF'};
0958 listdim={'AY','AX',{'AY','AX'},'nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors','nb_vectors'};
0959 Role={'coord_y','coord_x','scalar','coord_x','coord_y','vector_x','vector_y','scalar','vector_z','warnflag','falseflag'};
0960 ind_select=[];
0961 nbvar=0;
0962 
0963 for ilist=1:numel(listfields)
0964     eval(['testvar=isfield(AxeData,listfields{ilist}) && ~isempty(AxeData.' listfields{ilist} ');'])
0965     if testvar
0966         nbvar=nbvar+1;
0967         AxeData.ListVarName{nbvar}=listfields{ilist};
0968         AxeData.VarDimName{nbvar}=listdim{ilist};
0969         AxeData.VarAttribute{nbvar}.Role=Role{ilist};
0970     end
0971 end
0972 
0973 % adjust the size of the plot to include the whole field, except if KeepLim=1
0974 if ~(exist('KeepLim','var') && isequal(KeepLim,1))  %adjust the graph limits*
0975         test_lim=0;
0976         if test_vec
0977             Xlim=[min(vec_X) max(vec_X)];
0978             Ylim=[min(vec_Y) max(vec_Y)];
0979             test_lim=1;
0980             if test_ima%both background image and vectors coexist, take the wider bound
0981                 Xlim(1)=min(AX(1),Xlim(1));
0982                 Xlim(2)=max(AX(end),Xlim(2));
0983                 Ylim(1)=min(AY(end),Ylim(1));
0984                 Ylim(2)=max(AY(1),Ylim(2));
0985             end
0986         elseif test_ima %only image plot
0987             Xlim(1)=min(AX(1),AX(end));
0988             Xlim(2)=max(AX(1),AX(end));
0989             Ylim(1)=min(AY(1),AY(end));
0990             Ylim(2)=max(AY(1),AY(end));
0991             test_lim=1;
0992         end 
0993         if test_lim
0994             set(haxes,'XLim',Xlim);% set x limits of frame in axes coordinates
0995             set(haxes,'YLim',Ylim);% set y limits of frame in axes coordinate
0996         end
0997 end
0998 if ~(isfield(PlotParam,'Auto_xy') && isequal(PlotParam.Auto_xy,1))
0999      set(haxes,'DataAspectRatio',[1 1 1])
1000 end
1001 set(haxes,'YDir','normal') 
1002 
1003 %---------------------------------------------
1004 %function for plotting vectors
1005 %------------------------------------------------
1006 %INPUT:
1007 % haxes: handles of the plotting axes
1008 %x,y,u,v: vectors coordinates and vector components to plot, arrays withb the same dimension
1009 % scale: scaling factor for vector length representation
1010 %colorlist(icolor,:): list of vector colors, dim (nbcolor,3), depending on color #i
1011 %col_vec: matlab vector setting the color number #i for each velocity vector
1012 function quiresetn(haxes,x,y,u,v,scale,colorlist,col_vec)
1013 
1014 %define arrows
1015 theta=0.5 ;%angle arrow
1016 alpha=0.3 ;%length arrow
1017 rot=alpha*[cos(theta) -sin(theta); sin(theta) cos(theta)]';
1018 %find the existing lines
1019 %h=findobj(gca,'Type','Line');% search existing lines in the current axes
1020 h=findobj(haxes,'Tag','vel');% search existing lines in the current axes
1021 sizh=size(h);
1022 set(h,'EraseMode','xor');
1023 set(haxes,'NextPlot','replacechildren');
1024 %htext=findobj('Tag','scalevec');
1025       
1026 %drawnow
1027 %create lines (if no lines) or modify them
1028 if ~isequal(size(col_vec),size(x))
1029     col_vec=ones(size(x));% case of error in col_vec input
1030 end
1031 sizlist=size(colorlist);
1032 ncolor=sizlist(1);
1033 
1034 for icolor=1:ncolor
1035     %determine the line positions for each color icolor
1036     ind=find(col_vec==icolor);
1037     xc=x(ind);
1038     yc=y(ind);
1039     uc=u(ind)*scale;
1040     vc=v(ind)*scale;
1041     n=size(xc);
1042     xN=NaN*ones(size(xc));
1043     matx=[xc(:) xc(:)+uc(:) xN(:)]';
1044     matx=reshape(matx,1,3*n(2));
1045     maty=[yc(:) yc(:)+vc(:) xN(:)]';
1046     maty=reshape(maty,1,3*n(2));
1047     
1048     %determine arrow heads
1049     arrowplus=rot*[uc;vc];
1050     arrowmoins=rot'*[uc;vc];
1051     x1=xc+uc-arrowplus(1,:);
1052     x2=xc+uc;
1053     x3=xc+uc-arrowmoins(1,:);
1054     y1=yc+vc-arrowplus(2,:);
1055     y2=yc+vc;
1056     y3=yc+vc-arrowmoins(2,:);
1057     matxar=[x1(:) x2(:) x3(:) xN(:)]';
1058     matxar=reshape(matxar,1,4*n(2));
1059     matyar=[y1(:) y2(:) y3(:) xN(:)]';
1060     matyar=reshape(matyar,1,4*n(2));
1061     %draw the line or modify the existing ones
1062     isn=isnan(colorlist(icolor,:));%test if color NaN
1063     if 2*icolor > sizh(1) %if icolor exceeds the number of existing ones
1064         axes(haxes)
1065         if ~isn(1) %if the vectors are visible color not nan
1066             if n(2)>0
1067                 hold on
1068                 line(matx,maty,'Color',colorlist(icolor,:),'Tag','vel');% plot new lines
1069                 line(matxar,matyar,'Color',colorlist(icolor,:),'Tag','vel');% plot arrows
1070             end
1071         end
1072     else
1073         if isn(1) 
1074             delete(h(2*icolor-1))
1075             delete(h(2*icolor))
1076         else
1077             set(h(2*icolor-1),'Xdata',matx,'Ydata',maty);
1078             set(h(2*icolor-1),'Color',colorlist(icolor,:));
1079             set(h(2*icolor-1),'EraseMode','xor');
1080             set(h(2*icolor),'Xdata',matxar,'Ydata',matyar);
1081             set(h(2*icolor),'Color',colorlist(icolor,:));
1082             set(h(2*icolor),'EraseMode','xor');
1083         end
1084      end
1085 end
1086 if sizh(1) > 2*ncolor
1087     for icolor=ncolor+1 : sizh(1)/2%delete additional objects
1088         delete(h(2*icolor-1))
1089         delete(h(2*icolor))
1090     end
1091 end
1092 
1093 %---------------------------------------
1094 %determine tick positions for colorbar
1095 %------------------------------------
1096 function YTick=colbartick(MinA,MaxA)
1097 %determine tick positions with "simple" values between MinA and MaxA
1098 YTick=0;%default
1099 maxabs=max([abs(MinA) abs(MaxA)]);
1100 if maxabs>0 
1101 ord=10^(floor(log10(maxabs)));%order of magnitude
1102 div=1;
1103 siz2=1;
1104 while siz2<2
1105 %     values=[-9:div:9];
1106     values=-10:div:10;
1107     ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);%indices of 'values' such that MinA<ord*values<MaxA
1108     siz=size(ind);
1109     if siz(2)<4%if there are less than 4 selected values (4 levels)
1110         values=[-9:0.5*div:9];
1111         ind=find((ord*values-MaxA)<0 & (ord*values-MinA)>0);
1112     end
1113     siz2=size(ind,2);
1114 %     siz2=siz(2)
1115     div=div/10;
1116 end
1117 YTick=ord*values(ind);
1118 end
plot_field

PURPOSE

SYNOPSIS

DESCRIPTION

CROSS-REFERENCE INFORMATION

SUBFUNCTIONS

SOURCE CODE
