CODEWITHSUNDEEP
arraysmatlabstructvectorization
Finn
Finn

Reputation: 2343

Vertical concatenation

I would ask a rather easy question, but i was unable to find an answer so far. I have a structure containing names and data lets say:

mystruct(1).Name = 'A' 
mystruct(1).Data = 1x100double
mystruct(2).Name = 'B'
mystruct(2).Data = 1x100double
mystruct(3).Name = 'C'
mystruct(3).Data = 1x100double

now i want to create an array of doubles from 'A' and 'C' with the dimension 2x100double. The only thing i could come up with is:

thingsiwant = [1;3]
myarray = [mystruct(thingsiwant)]

whoever the data ends up being 1x200 rather than 2x100. I tried a few combinations of vector dimensions but i couldn't come up with a solution and right now i went for 

myarray = reshape([mystruct(thingsiwant)],2,100)

which works but does not look nice as code. Is there a nicer way to get what i want? Thank you in advance

Upvotes: 2

Views: 58

Answers (2)

Daniel
Daniel

Reputation: 36710

myarray = cat(1,mystruct(thingsiwant).Data)

Upvotes: 1

JustinBlaber
JustinBlaber

Reputation: 4650

What you want is:

mystruct(1).Name = 'A';
mystruct(1).Data = 1:100;
mystruct(2).Name = 'B';
mystruct(2).Data = 1:100;
mystruct(3).Name = 'C';
mystruct(3).Data = 1:100;

A = vertcat(mystruct(thingsiwant).Data);
size(A)

output:

ans =

     2   100

Upvotes: 0

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