Histogram occurences per class

Hi,

I want to have the classes count centered at the top of each bar, as a number. Can you please help?

figure()
h = histogram(Sum.tClasses)
ylabel('Occurrences', 'fontsize', 14)
xticks([1 2 3 4])

Answer 1

[Steven Lord]

Let's make some sample data and plot the histogram using the 'integers' BinMethod. In this case each integer in my data set gets its own bin.

x = randi(5, 1, 100);
h = histogram(x, 'BinMethod', 'integers');

To make working with the properties easier, extract two of them into variables with short names.

c = h.BinCounts;
E = h.BinEdges;

Find the X coordinate of the center of each bar.

centers = (E(1:end-1)+E(2:end))/2;

Write the bin counts data 1 unit above the top of each bar. If your counts were larger than this you might want to increase that offset or use a multiplicative factor (put it 10% above the bar by using 1.1*c instead of c+1, as an example.)

text(centers, c+1, string(c))