extract field from a structure problem

Hi:

I need to extract the field 'P' from a structure, to form a new structure with all the value of P. but I the answer in link below:

https://www.mathworks.com/matlabcentral/answers/9823-extracting-fields-from-structure-arrays

does not work, it only keeps the last one of the structure.

my command is tmp=DP1(:).P

Thanks!

Yu

[Stephen23]

@Yu Li: your code is like this:

tmp = DP1(:).P

whereas the code in the thread you linked to is like this:

tmp = [DP1(:).P]

Do you notice the difference?

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

Answer 1

[Bruno Luong]

depending on the content, if scalar

tmp=[DP1.P]

or if not

tmp={DP1.P}

[Yu Li]

Thank you, your answer works.