Bar graph comparison with custom x-axis and text

Hi All,

I want to compare two vectors using bar graph with custom labels and a text on top of each bar. Can you please help me with this? Below is the code i tried:

y1=[[0.41 0.38 0.42]];
y2=[[0.63 0.75 0.81]];
x=1:3;
figure(1)
bar(x,[y1' y2'])
label1={'front1';'front2';'front3'};%%corresponds to y1
label2={'back1';'back2';'back3'};%%corresponds to y2

So basically, i want label1 and label2 in the x-axis and corresponding values of y1,y2 on top of the bar.

Answer 1

[Star Strider]

This will work for your two-variable problem:

y1=[[0.41 0.38 0.42]];
y2=[[0.63 0.75 0.81]];
x=1:3;
figure(1)
bar(x,[y1' y2'])
label1={'front1';'front2';'front3'};%%corresponds to y1
label2={'back1';'back2';'back3'};%%corresponds to y2
text(x, y1, label1, 'VerticalAlignment','bottom', 'HorizontalAlignment','right')
text(x, y2, label2, 'VerticalAlignment','bottom', 'HorizontalAlignment','left')

A more general approach:

labels = {label1; label2};
figure(1)
hBar = bar(x,[y1' y2']);
for k1 = 1:size(hBar,2)
    ctr(k1,:) = bsxfun(@plus, hBar(1).XData, [hBar(k1).XOffset]');
    ydt(k1,:) = hBar(k1).YData;
    text(ctr(k1,:),ydt(k1,:), labels{k1}, 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
end

[Sowmya MR]

Hi, Thank you. However i want labels (label1, label2) in x-axis and values of corresponding vectors y1 and y2 (0.41, 0.63...) on top of the bar as text?

[Star Strider]

Try this:

y1=[[0.41 0.38 0.42]];
y2=[[0.63 0.75 0.81]];
y12 = {regexp(sprintf('%.2f\n',y1),'\n','split'); regexp(sprintf('%.2f\n',y2),'\n','split')};
x=1:3;

label1={'front1';'front2';'front3'};%%corresponds to y1
label2={'back1';'back2';'back3'};%%corresponds to y2
labels = {label1; label2};

figure(1)
hBar = bar(x,[y1' y2']);
set(gca, 'XtickLabel',[])
for k1 = 1:size(hBar,2)
    ctr(k1,:) = bsxfun(@plus, hBar(1).XData, [hBar(k1).XOffset]');
    ydt(k1,:) = hBar(k1).YData;
    text(ctr(k1,:),ydt(k1,:), y12{k1}(1:end-1), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
    text(ctr(k1,:),-0.05*ones(size(x)), labels{k1}, 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
end

Experiment to get the result you want.

[Sowmya MR]

perfect.. thank you..

[Star Strider]

As always, my pleasure.