Plot flowchart with the pinpoint box

Dear developers, how to plot flowchart with the precise positioning box as following?

Where can I find the corresponding scripts that I can learn?
Thank you very much.

I think I made that one in Illustrator, but it is something you can do in GMT by plotting rounded or straight rectangles and plot text in them. Basic plot and text calls, and draw lines with plot. You just have to decide on coordinates, sizes, etc.

Iā€™d advise to use a canvas to position everything :slight_smile:

gmt basemap -R0/29.7/0/21 -JX29.7c/21c -Baf1g1

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