using the data from struct

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hello i have a small problem
i have a code and when i run it its solution appear as a struct
the problem is i want to take some data from this struct aىd use it as a input for another code but i can't when i enter the name of a field in structure for example CL matlab tells me Undefined function or variable 'CL'.
i want this structure outputs to appear in my workspace like that
any suggestions please :)
  2 个评论
Fangjun Jiang
Fangjun Jiang 2020-2-14
out of breath reading your question. add proper punctuation marks.
Stephen23
Stephen23 2020-2-14
编辑:Stephen23 2020-2-14
You should allocate the structure to a variable, e..g.:
S = function_that_returns_a_structure(...);
Then you can trivially refer to its fields, e.g.:
S.Re
S.CD
S.Ncrit
etc.
"i want this structure outputs to appear in my workspace like that"
Do not convert structure fields to variables, unless you want to force yourself into writing slow, complex, buggy code that is hard to debug.

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采纳的回答

Fangjun Jiang
Fangjun Jiang 2020-2-14
If you can't change the other program, Out=YourOtherProgram(), where "Out" is a data like "ans" in your picture,
then you can use Out.CL, Out.CD, etc.
There are functions like struct2array(), struct2cell() that you can use.
  2 个评论
Mohamed Ibrahim
Mohamed Ibrahim 2020-2-14
thanks for your replay :)
i write this line at the end of my code
cth=ans.CL;
and matlab gives me this error message
Attempt to reference field of non-structure array.
Error in xfoil (line 239)
cth=ans.CL;
Fangjun Jiang
Fangjun Jiang 2020-2-14
"ans" is the reserved variable name used by MATLAB. Use a different name.

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