How to draw a heat map with blank space in R language ggplot2

This article shows you how R language ggplot2 draws a heat map with white space, concise and easy to understand, absolutely can make your eyes shine, through the detailed introduction of this article I hope you can gain something.

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Before someone in the public number message asked how to achieve this picture at the beginning of the article, the following B picture is a broken line chart plus a column chart, relatively easy to achieve, the above A picture is a little more complex, I think of the way is puzzle, Figure A can be regarded as three heat maps, then add a stacked column chart, and finally combine the four pictures together. Let's try this idea and see if it can be realized.

First draw a heat map

This heat map is slightly different from the conventional one. It can be simply understood as a heat map with missing values. Missing values are blank cells, and other values are filled in colors.

So let's structure the data along these lines.

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Organize the data set according to the above format and store it in csv file.

The first is to read in the data df