vertcat elements of structure

i'm trying to extract elements from a structure and can do what i need to using

X = vertcat(S(1).Norm_X,S(2).Norm_X,S(3).Norm_X);

however i would like to use a for loop in case the size of the structure changes.

for i = 1:numel(data)

X= vertcat(S(i).Norm_X)

end

However this method overwrites X each time it goes through the loop so rather than having a 3x100 double i have a 1x100 double which was last through the loop.

Answer 1

[Stephen23]

You can use a comma-separated list, no loop is required:

X = vertcat(S.Norm_X)

See this answer for a detailed explanation:

https://www.mathworks.com/matlabcentral/answers/329538-why-do-i-get-this-error-for-this-non-scalar-structure#answer_258438