I am doing a GUI which plots a cube when the user enters the dimension of the cube. But If i keep entering new dimensions, the old cube still stays at the display? Is there any way to delete the previous figure every time when new data is entered?

I am doing a GUI which plots a cube when the user enters the dimension of the cube. But If i keep entering new dimensions, the old cube still stays at the display? Is there any way to delete the previous figure every time when new data is entered?

Answer 1

[Star Strider]

Without seeing your code I don’t know what you’ve already done. Perhaps the drawnow function will do what you want. (There are links to its friends at the end of that page and in the menu to the left of the text in the online documentation page.)

[matlablearner]

This is the sub function which gets executed when I enter the dimension of the cube(In the GUI).

case 'cube'

          a = str2double(get(handles.cubedimension,'string'));
          fm = [1 2 6 5; 2 3 7 6; 3 4 8 7; 4 1 5 8; 1 2 3 4; 5 6 7 8];
          vm = [0 0 0; a 0 0; a a 0; 0 a 0; 0 0 a; a 0 a; a a a; 0 a a];
          patch('Vertices',vm,'Faces',fm, 'FaceVertexCData',hsv(6),'FaceColor','flat'); 
                  %set default view
          az = wrapTo360(-37.5); el = 30; %limits for az 0...360  for el 0...90
          view(handles.axes1,[az el]);
          set(handles.Horizontalslider,'value',az/360);
          set(handles.Verticalslider,'value',el/90);
          axis([0 a*1.25 0 a*1.25 0 a*1.25]);

Where should I include the drawnow ? Thanks a lot for your quick response

[Star Strider]

Probably just after the patch call. See the documentation for details and Examples.

You might also need to use the refreshdata function.

You will likely have to experiment to get the result you want.

Answer 2

[Ben11]

Using drawnow would refresh the plot and get rid of the old one; that might do the trick