How do I delete a field variable from a structure

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I have variable in gui: handles.Data; Data is type: 70x50x2 logical. I need to delete the variable data. When i write: delete(handles.Data); or clean(handles.Data); then get an error: Argument must contain a string. :(
Thank you

Accepted Answer

Jiro Doke
Jiro Doke on 19 Feb 2012
handles.Data is a field of variable handles. To delete a field,
handles = rmfield(handles. 'Data');
To set the field to empty,
handles.Data = [];
  1 Comment
Martin
Martin on 19 Feb 2012
Finally, it works as follows: handles=rmfield(handles,'Data');
Thx!

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More Answers (2)

Jan
Jan on 19 Feb 2012
Same effect as rmfield, but about 10 times faster: FEX: fRMField

Image Analyst
Image Analyst on 19 Feb 2012
Try this robust code, to avoid errors:
% Try to remove the field called Data, if there is one.
% First see if there is a field called "Data."
hasField = isfield(handles, 'Data') % Will be True or False.
% Now remove it if it's there.
if hasField
% Field is there. Remove it.
handles = rmfield(handles, 'Data')
else
% Field is not there, warn user.
warningMessage = sprintf('Warning: the structure "handles"\ndoes not have a field called "Data."');
uiwait(warndlg(warningMessage));
end

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