Using a generated variable name as a handle for set function

Question

Matt 2015-9-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/242916-using-a-generated-variable-name-as-a-handle-for-set-function

评论： Matt 2015-9-14

Hello!

I would like to know how can I use a generated variable name to be used as a handle for the SET function. I have the current code:

      for j=1:25
          var=num2str(j, '%02i')
          variable=['panel31.txt1' var]
          if timematrix(menu.pm28, j)==1
              set(variable, 'Color', 'g');
          else
              set(variable, 'Color', 'r');
          end
      end

However, I am getting the following error:

Error using set
Value must be a handle

How can I do this?

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Answer 1

Walter Roberson 2015-9-14

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https://ww2.mathworks.cn/matlabcentral/answers/242916-using-a-generated-variable-name-as-a-handle-for-set-function#answer_192295

在 MATLAB Online 中打开

      for j=1:25
          var=num2str(j, '%02i')
          variable = sprintf('txt1%02i', j);
          if timematrix(menu.pm28, j)==1
              set(panel31.(variable), 'Color', 'g');
          else
              set(panel31.(variable), 'Color', 'r');
          end
      end

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Matt 2015-9-14

Fantastic, thank you very much! I ust had to change 'Color', to 'ForegroundColor' to suit my needs, but it works perfectly. Interesting way of doing, I've learned something!

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