Access lower level fields in structure

I have a structure that is setup as follows.

foo.check.W = 1

foo.check1.W = 2

foo.check2.W = 3

I would like to quickly grab all the data in foo.(all fields).W and save it to an array that i can plot it. I know i could do:

fnames = fieldnames(foo)

for i =1:length(fnames)

Wdata(i) = foo.(fieldnames(i)).W

end

But would like to know if there's a quick way to access the data without using loops.

Answer 1

[galaxy]

Let 's try

sm = table2array(cell2table(struct2cell(foo)));
Wdata = [sm(:).W];