polyline can be saved and loaded from the lateral profile gui;

segmentation fault issue fixed (when executing system(PDF_VIEWER) under linux)

src/fnc/LANS.m

@@ -2081,20 +2081,20 @@ function display_xyz_stacks_Callback(hObject, eventdata, handles)
 h = [];
 workdir=get(handles.edit2,'String');
 workdir=fixdir(workdir);
-if(isdir(workdir))
+if(isfolder(workdir))
  newdir=workdir;
 else
  newdir='';
-end;
+end
 global MAT_EXT
 def_file = [workdir 'prefs' MAT_EXT];
 fprintf(1,'Select the Preferences file (default %s)\n',def_file);
 
-[FileName,newdir,newext] = uigetfile('*.mat', 'Select the Preferences file', def_file);
+[FileName,newdir,~] = uigetfile('*.mat', 'Select the Preferences file', def_file);
 if(FileName~=0)
  imfile = [newdir, FileName];
  h = load_settings(handles,imfile,0);
-end;
+end
 
 % --------------------------------------------------------------------
 function define_mask_Callback(hObject, eventdata, handles)
@@ -2403,7 +2403,7 @@ function Save_Display_Preferences_Callback(hObject, eventdata, handles)
 
 workdir=get(handles.edit2,'String');
 workdir=fixdir(workdir);
-if(isdir(workdir))
+if(isfolder(workdir))
  newdir=workdir;
 else
  newdir='';
@@ -2416,7 +2416,7 @@ function Save_Display_Preferences_Callback(hObject, eventdata, handles)
 if(FileName~=0)
  imfile = [newdir, FileName];
  save_settings(handles,imfile);
-end;
+end
 
 % --------------------------------------------------------------------
 function close_all_figures_Callback(hObject, eventdata, handles)

src/fnc/lateral_profile_gui.m

@@ -187,6 +187,64 @@ function pushbutton1_Callback(hObject, eventdata, handles)
 end
 %guidata(hObject, handles);
 
+function pushbutton5_Callback(hObject, eventdata, handles)
+if isfield(handles,'polygon')
+%if ishandle(handles.polygon)
+ xy = handles.polygon.Position;
+
+ workdir=handles.fdir;
+ if(isfolder(workdir))
+ newdir=workdir;
+ else
+ newdir='';
+ end
+
+ def_file = [workdir 'polygon_xy'];
+ fprintf(1,'Specify a file name for storing the polygon coordinates (default %s.dat)\n',def_file);
+
+ [FileName,newdir,~] = uiputfile('*.dat', 'Select *.DAT file', def_file);
+ if(FileName~=0)
+ polygonfile = [newdir, FileName];
+ save(polygonfile,'xy','-ascii');
+ end
+
+end
+
+function pushbutton6_Callback(hObject, eventdata, handles)
+workdir=handles.fdir;
+if(isfolder(workdir))
+ newdir=workdir;
+else
+ newdir='';
+end
+def_file = [workdir 'polygon_xy.dat'];
+fprintf(1,'Select a file with polygon coordinates (default %s)\n',def_file);
+
+[FileName,newdir,~] = uigetfile('*.dat', 'Select *.DAT file', def_file);
+if(FileName~=0)
+ polygonfile = [newdir, FileName];
+ fid=fopen(polygonfile,'r');
+ xy = fscanf(fid,'%f %f',[2,inf]);
+ fclose(fid);
+ xy = xy';
+end
+if isfield(handles,'polygon') 
+ if isvalid(handles.polygon)
+ handles.polygon.Position = xy;
+ else
+ ax = handles.axes1;
+ polygon = images.roi.Polyline(ax, 'Color', 'w', 'Tag', 'lans_polygon');
+ polygon.Position = xy;
+ handles.polygon = polygon;
+ end
+else
+ ax = handles.axes1;
+ polygon = images.roi.Polyline(ax, 'Color', 'w', 'Tag', 'lans_polygon');
+ polygon.Position = xy;
+ handles.polygon = polygon;
+end
+guidata(hObject, handles);
+
 % --- Executes on button press in pushbutton2.
 function pushbutton2_Callback(hObject, eventdata, handles)
 % hObject handle to pushbutton2 (see GCBO)

src/lans_paths.m

@@ -68,7 +68,11 @@
  ZIP_COMMAND = 'zip -r';
 
  % PDF viewer
- PDF_VIEWER = 'xreader';
+ %PDF_VIEWER = 'xreader';
+
+ % if calling system(PDF_VIEWER) without the LD_LIBRARY_PATH set
+ % gives a segmentation fault, use the following way to define it:
+ PDF_VIEWER = 'LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu; xreader';
 
  GUI_FONTSIZE = 10;