Bargraph from variable length structure

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Adam
Adam on 25 Sep 2012
I have a structure compiled from imported (x,y) datasets in the form of variable.dataset(i).x(:), variable.dataset(i).y(:) where the lengths of x&y are the same within the same dataset, but may differ between datasets i.e.:
variable.dataset(1).x = [1 2 3 4]';
variable.dataset(1).y = [9 8 7 6]';
variable.dataset(2).x = [3 4 5 6 7 8]';
variable.dataset(2).y = [1 9 2 8 3 7]';
is there a way to generate a single bar(x,y) figure containing all the x/y dataset pairs?

Accepted Answer

Matt Fig
Matt Fig on 25 Sep 2012
Edited: Matt Fig on 25 Sep 2012
As long as your x data does not contain duplicates:
% Data. Note the x has no duplicates.
variable.dataset(1).x = [1 2 3 4]';
variable.dataset(1).y = [9 8 7 6]';
variable.dataset(2).x = [5 6 7 8 9 10]';
variable.dataset(2).y = [1 9 2 8 3 7]';
bar(vertcat(variable.dataset(:).x),vertcat(variable.dataset(:).y))
If you meant that you want two bar plots on the same figure, do this:
bar(variable.dataset(1).x,variable.dataset(1).y)
hold on
bar(variable.dataset(2).x,variable.dataset(2).y,'r')
  8 Comments
Matt Fig
Matt Fig on 25 Sep 2012
Hopefully you have left nothing out this time!
variable.dataset(1).x = [1 2 3 4]';
variable.dataset(1).y = [9 8 7 6]';
variable.dataset(2).x = [3 4 5 6 7 8]';
variable.dataset(2).y = [1 9 2 8 3 7]';
variable.dataset(3).x = [1.5 2.5 3.5].'; % Non-integers.
variable.dataset(3).y = [6 7 8].';
variable.dataset(4).x = [1.5 2.5 3.5 6.5].';
variable.dataset(4).y = [2 1 3 8].';
U = unique(vertcat(variable.dataset(:).x));
MY = nan(length(U),length(variable.dataset));
MX = repmat(U,1,size(MY,2));
for ii = 1:length(variable.dataset)
R = ismember(MX(:,1),variable.dataset(ii).x);
MY(R,ii) = variable.dataset(ii).y;
end
bar(MX,MY)

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