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Possibility to access/use whole structures

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loes7815
loes7815 2016-2-22
关闭： MATLAB Answer Bot 2021-8-20
Hi!
I made a structure with;
month(1)
month(2)
month(3) etc.
For example, I want to plot month(1:12).Q how can I do this?

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Guillaume
Guillaume 2016-2-22
See Access multiple elements of a nonscalar struct array. In your case, assuming that the fields Q are scalar:
plot([month(1:12).Q])
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Stephen23
Stephen23 2016-2-22
编辑：Stephen23 2016-2-22
Try this link, it does not need a license:
http://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html
Accessing the elements of a non-scalar structure is easy. Merging unequal-length vectors into one array is not so easy, and essentially the best solution is to preallocate an array and use a loop.
Guillaume
Guillaume 2016-2-22
编辑：Guillaume 2016-2-22
It wasn't clear from your question whether Q was scalar (in which case you'd want a single plot for all the months) or a vector (in which case you'd want a plot per month).
In the latter case, the easiest is probably:
figure;
hold on;
arrayfun(@(m) plot(m.Q, m.Z), month);
Another option is to stuff the Q and Z in a single cell array and use comma separated list expansion to input arguments:
figure;
QZ = {month.Q; month.Z};
plot(QZ{:}); %Q and Z of each month must be the same size (or scalar)

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