Matplotlib Histogram with numbers on the top

In this article, I will show an example of using matplotlib to make a histogram with numbers on the top of each bar.

Initialize data and figure.

We first use NumPy to generate random numbers. Then we create a figure as usual by plt.subplot() and plot the histogram.

Add numbers on the top of the figure.

For the number we want to put on the top of each bar, we need to get the position of each bar. So we use the bins return from ax.hist() to get the position on the x-axis. The position of the y-axis is the count which we already have. In the end, we use ax.text() to add the number on the top of each bar. The offset on the x and y-axis could be adjusted according to the bin size.

By the example above, we will have a histogram like the one shown below.