using the data from struct

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 :)

[Fangjun Jiang]

out of breath reading your question. add proper punctuation marks.

[Stephen23]

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.

Answer 1

[Fangjun Jiang]

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.

[Mohamed Ibrahim]

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]

"ans" is the reserved variable name used by MATLAB. Use a different name.