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

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

[Stephen23]

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.

Answer 1

[Adam]

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.

[pengcheng]

thank you very much,il works

Answer 2

[Azzi Abdelmalek]

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

[pengcheng]

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.