I want to empty a variable q, i used q={} or q=[ ],but why it doesn't work , thank you

Question

pengcheng 2014-10-6

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https://ww2.mathworks.cn/matlabcentral/answers/157512-i-want-to-empty-a-variable-q-i-used-q-or-q-but-why-it-doesn-t-work-thank-you

评论： pengcheng 2014-10-6

q
ans=
  '4400002970000003533'
  '8500000190000013093'
  '8500000190000045501'
  '8500000840000005660'
  '8500000840000006008'
  '8500090100000000354'
  '8500090100000007316'
  '8500090100000009112'
  '8500090100000009112'
  '8500090100000010547'

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Stephen23 2014-10-6

You don't show us what you are doing, and expect us to tell you why it doesn't work. Please provide the full code you are trying to run.

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Answer 1

Adam 2014-10-6

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https://ww2.mathworks.cn/matlabcentral/answers/157512-i-want-to-empty-a-variable-q-i-used-q-or-q-but-why-it-doesn-t-work-thank-you#answer_154047

在 MATLAB Online 中打开

q = cell.empty;

will give you an empty cell array if that is what you want. I don't know what you whole code looks like, but this should keep it in the correct type for next time round the loop I think.

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pengcheng 2014-10-6

thank you very much,il works

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Answer 2

Azzi Abdelmalek 2014-10-6

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编辑：Azzi Abdelmalek 2014-10-6

在 MATLAB Online 中打开

q={ '4400002970000003533' '8500000190000013093' '8500000190000045501' '8500000840000005660' '8500000840000006008' '8500090100000000354' '8500090100000007316' '8500090100000009112' '8500090100000009112' '8500090100000010547'}'
q=[]

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pengcheng 2014-10-6

in the end of every loop, i want to empty q, but i doesn't work if q=[]; The following error occurred converting from cell to double: Error using double Conversion to double from cell is not possible.

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