Concatenate structure with subfields

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M
M on 21 Feb 2017
Commented: John Chilleri on 24 Feb 2017
I have a 1x1 structure which has 1x3 fields which further has 1x5 runs. Each run has different double data(same no. of columns, different no. rows). I want to concatenate it like run 1 its data 203x7 double, run 2 its data 216x7 double and so on. Also assign Column names to each 7 columns. How to do that within a loop?
  1 Comment
Jan
Jan on 21 Feb 2017
Can you post a small example? What does "1x5 runs" exactly mean?

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Answers (1)

John Chilleri
John Chilleri on 22 Feb 2017
Hello,
Hopefully I understand your question properly.
You can concatenate them with:
data = [datarun1; datarun2; ...; datarun5];
Furthermore, the easiest way to have column names is to have a separate variable (1x7) containing the names, unless you want to look into cells, in which you can have column names at the top before the data. There might exist a better way for column names, but these are some simple approaches.
Hope this helps!
  2 Comments
John Chilleri
John Chilleri on 24 Feb 2017
Hello,
Perhaps you can make a new field in your struct with the concatenated data:
>> a.b.c = rand(4,3)
a =
b: [1x1 struct]
>> a.b.d = rand(5,3)
a =
b: [1x1 struct]
>> a.b.e = [a.b.c; a.b.d];
>> a.b.e
ans =
0.0462 0.3171 0.3816
0.0971 0.9502 0.7655
0.8235 0.0344 0.7952
0.6948 0.4387 0.1869
0.4898 0.2760 0.4984
0.4456 0.6797 0.9597
0.6463 0.6551 0.3404
0.7094 0.1626 0.5853
0.7547 0.1190 0.2238
(Concatenated a 4x3 with a 5x3 in new field a.b.e.). Is this closer to what you're needing?

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