Checkboxes disappear when a new one created (matlab 2007b)

Hello,

I have a button group with handle handles.dataSelect and I'm trying to add some texts and checkboxes to that group based on information contained in handles.dataStruct. I would expect the output to be something like

Channel Select

[] Channel 1

[] Channel 2

etc...

Temperature Select

[] T = 20 K

[] T = 40 K

etc...

However, what I see instead is

Channel Select

... lots of space ...

[] Last channel

Temperature Select

... lots of space ...

[] Last temperature

I checked and the button group does have all of the checkboxes as children and all children ARE in fact set to be visible and enabled.

However, I don't see any but the last channel and the last temperature. When I debugged, with every for loop iteration the previous checkbox disappeared from view while the new checkbox was added...

It seems like some simple mistake on my part, but I can't quite figure out what exactly I did wrong. Any help would be appreciated, the exact code I used is below.

Thank you,

Ilya

function createView( handles )
    chPos=0.75;
    handles.hText1=uicontrol(handles.dataSelect,'Style','text',...
        'Tag','ChSelectText','String','Channel Select','Units','normalized',...
        'HorizontalAlignment','left','Position',[0.1, chPos, 0.6, .2]);
    for j=1:length(handles.dataStruct.channels), 
        handles.hChannelBox(j)=uicontrol(handles.dataSelect,...
            'Style','checkbox','Tag',['Ch' num2str(j) 'box'],'String',...
            ['Channel ' num2str(handles.dataStruct.channels(j))],...
            'Units','normalized','HorizontalAlignment','left',...
            'Position',[0.1, chPos-j*0.06, 0.6, .2]);

      end
      tempPos=chPos-length(handles.dataStruct.channels)*0.06-0.2;
      handles.hText2=uicontrol(handles.dataSelect,'Style','text',...
          'Tag','TempSelectText','String','Temperature Select',...
          'Units','normalized','HorizontalAlignment','left','Position',...
          [0.1, tempPos, 0.6, .2]);
      for j=1:length(handles.dataStruct.temps),
          handles.hTempBox(j)=uicontrol(handles.dataSelect,...
              'Style','checkbox','Tag',['Temp' num2str(j) 'box'],'String',...
              ['T = ' num2str(handles.dataStruct.temps(j)) ' K'],...
              'Units','normalized','HorizontalAlignment','left',...
              'Position',[0.1, tempPos-j*0.06, 0.6, .2]);
      end
      guidata(handles.dataSelect, handles);
  end

Answer 1

[Matt Fig]

You are overlapping each with the next. (This is why I prefer to work in pixels by the way.)

For starters, change:

[0.1, chPos-j*0.06, 0.6, .2]
to

[0.1, chPos-j*0.06, 0.6, .1]

in the first FOR loop. You will have to play around with the numbers to get them correct and look like what you want.

[Ilya Valmianski]

You sir, are quite right! Didn't know it would disable the view of one of them if I did it!