How to draw a precipitation map using only the precipitation from those stations?

Q&A PyGMT Q&A
1

Hello brothers：
Sorry i’m a newbie for python and pygmt.
Now I am drawing a map showing precipitation in Hong Kong area. I only have data from some weather stations in Hong Kong including longitude 、 latitude and precipitation. By studying the manual, I’ll just color-code the precipitation for that stations,like this:

Figure 2022-07-06 204858
Figure 2022-07-06 2048581963×2036 94.9 KB

But I have two problems：①How to display only the range of Hong Kong, excluding other regions except Hong Kong？
②How to plot the precipitation within Hong Kong using only the precipitation from those stations？like this：
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222775×691 77 KB

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111785×695 74 KB

What should I do？Thank you all！！

2

Figure 2022-08-03 235918
Figure 2022-08-03 2359181963×2036 215 KB

How do I fill contour with color？
Is there a function like contourf() of matplotlib.pyplot？

3

Thanks @tReE for trying out PyGMT!

Maybe this tutorial is helpful for you: Creating a map with contour lines — PyGMT, especially the last section ‘adding a colormap’.

4

GMT does not have a contourf but grdview (and contour) has options that mimic that functionality.

5

Thank you very much, I will continue to learn！

6

Thank you very much, I will continue to learn more