Easy Question - Set Variable to Another Variable Using sprintf

I have a GUI with drop-down boxes, and based on these drop-down box values I load a specific variable (large matrix) out of my .mat file.

Here's that code which works:

      STstr = get(handles.source_type,'String');
      STval = get(handles.source_type,'Value');

      switch STstr{STval};
          case 'Single Point Source'
              source_type='SingleHeightMesh';     
      end

      SHstr = get(handles.scan_height, 'String');
      SHval = get(handles.scan_height,'Value');

      switch SHstr{SHval};
          case '100ft'
              scan_height='100';
      end

      filespec='%s%s';
      load('MCNPdata.mat',sprintf(filespec,source_type,scan_height));

The problem is that the rest of my code uses another variable, HeightMesh which I need to assign to the large matrix I just loaded.

HeightMesh=sprintf(filespec,source_type,scan_height);

This code just assigns HeightMesh to the string value of the name of that matrix variable. How can I simply take this matrix I loaded (the name of the matrix will vary based on multiple drop-down options) and assign it to HeightMesh?

Thanks in advance.

Answer 1

[Shashank Prasanna]

S = load('MCNPdata.mat',sprintf(filespec,source_type,scan_height));

S is a structure and one of its elements will be the matrix.

HeightMesh=S.(sprintf(filespec,source_type,scan_height));

Dynamically access the matrix as above

[Shashank Prasanna]

Here is an example that works for demonstration:

S=load('accidents.mat','datasources');

HeightMesh=S.('datasources');

[Ed]

Works great - thank you!