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extract field from a structure problem

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Yu Li
Yu Li 2018-11-15
编辑： Stephen23 2018-11-15
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
  1 个评论
Stephen23
Stephen23 2018-11-15
编辑：Stephen23 2018-11-15
@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

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采纳的回答

Bruno Luong
Bruno Luong 2018-11-15
depending on the content, if scalar
tmp=[DP1.P]
or if not
tmp={DP1.P}

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