How to add labels to cluster bar graphs

Question

Stefano 2014-10-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/159749-how-to-add-labels-to-cluster-bar-graphs

回答： Star Strider 2014-10-23

I'm trying to code in matlab how to exactly:

1. create clusters of bar graphs. So I want to create two bar graphs beside one another comparing two values in a bar chart format, and I need to do it for 4 seperate sets of data in the same graph.

2. Also on top of these bar graphs I would like to have the data label placed on top (so the value of the bar graph can be seen)

Any Help would be much appriciated! cheers

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Answer 1

Star Strider 2014-10-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/159749-how-to-add-labels-to-cluster-bar-graphs#answer_156276

在 MATLAB Online 中打开

This works in R2014b:

x = randi(10, 4, 2);
figure(1)
hb = bar(x)
axis([xlim    0  15])
hdx = get(hb(1),'XData');
hdy = get(hb(1),'YData');
hbw = get(hb(1),'BarWidth')
Lbs1 = strsplit(sprintf('%d ',hdy));
text(hdx-hbw/5,hdy, Lbs1(1:end-1),'HorizontalAlignment','center','VerticalAlignment','bottom')
hdx = get(hb(2),'XData');
hdy = get(hb(2),'YData');
hbw = get(hb(2),'BarWidth')
Lbs2 = strsplit(sprintf('%d ',hdy));
text(hdx+hbw/5,hdy, Lbs2(1:end-1),'HorizontalAlignment','center','VerticalAlignment','bottom')

producing:

It requires the ‘hbw/5’ fudge to get the labels to line up. In previous versions of handle graphics, it was possible to get the necessary data to calculate the exact centres of the bars. That code no longer works in R2014b. (I need to contact Tech Support to find out how to do that in HG2, if it’s still possible.)