how to use string within a line of code

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Peng Zhao
Peng Zhao 2017-9-1
评论： Adam 2017-9-1
I was trying to use a string as a object handle within a for loop to save space as following:
function pushbutton1_Callback(hObject, eventdata, handles)
for Button = 1
Button = num2str(Button);
Obj = strcat('handles.Num',Button);
set(str2func(Obj), 'ForegroundColor','red')
set(handles.Num1, 'ForegroundColor','red')
end
I would like to use Obj to replace handles.Num1. is there any way to do this?

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采纳的回答

Adam
Adam 2017-9-1
handles.( [ 'Num', num2str( button ) ] )
should work, although quite what you are doing with Button I can't work out
for Button = 1
is pointless and
Button = num2str(Button);
overwriting the loop variable is also not good code.
  2 个评论
Peng Zhao
Peng Zhao 2017-9-1
Thank you, this works. And because Button was only a temp variable that I used for the loop, that's why I was overwriting it.
Adam
Adam 2017-9-1
loop variables are usually temporary, but you don't overwrite them in the loop.

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