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
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Jiro Doke
2012-2-19
I'm going to rename the title to better reflect the question.
采纳的回答
Jiro Doke
2012-2-19
handles.Data is a field of variable handles. To delete a field,
handles = rmfield(handles. 'Data');
To set the field to empty,
handles.Data = [];
更多回答（2 个）
Image Analyst
2012-2-19
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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