Overlay and group two (or more) bar graphs (value by value)

Hi. I need to create a graph by overlapping and grouping the values on the vertical axis of two graphs I have generated:

load CountArray_A
load CountArray_S

x_A = CountArray_A(:,1).';
y_A = CountArray_A(:,2);
figure();
graph_A = barh(x_A,y_A,'FaceColor',[1 0 0],'EdgeColor','none');
name_A = "analysis A";
legend({name_A},'Location','northeast','Orientation','horizontal')

x_S = CountArray_S(:,1).';
y_S = CountArray_S(:,2);
figure();
graph_S = barh(x_S,y_S,'FaceColor',[0 1 0],'EdgeColor','none');
name_S = "analysis S";
legend({name_S},'Location','northeast','Orientation','horizontal')

The overall figure I would like to get should look like this (applied to my case, of course):

p.s. It could also happen, I don't know if this is a case, that a value present on the vertical axis is not present in one graph (but present in the other). In this case there would be only one bar (and not two) at the number present on the vertical axis.

Answer 1

[Star Strider]

Try this —

LD1 = load('CountArray_A.mat');
LD2 = load('CountArray_S.mat');
CountArray_A = LD1.CountArray_A;
CountArray_S = LD2.CountArray_S;

C(:,1) = (min([CountArray_A(:,1); CountArray_S(:,1)]) : max([CountArray_A(:,1); CountArray_S(:,1)])).';
C(:,[2 3]) = zeros(size(C(:,1),1),2);
LvA = ismember(C(:,1), CountArray_A(:,1));
LvS = ismember(C(:,1), CountArray_S(:,1));
C(LvA,2) = CountArray_A(:,2);
C(LvS,3) = CountArray_S(:,2);


figure
hbh = barh(C(:,1), C(:,[2 3]));
cm  = [1 0 0; 0 1 0];
for k =  1:numel(hbh)
    hbh(k).FaceColor = cm(k,:);
    hbh(k).EdgeColor = 'none';
end

legend('Analysis A', 'Analysis S', 'Location','best')

It first creates a common ‘x’ vector and then fills the last two columns of the ‘C’ matrix with appropriate values from the two ‘count’ vectors using a ‘logical indexing’ approach with the logical indices created by the ismember calls.

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