How to get the coordinates of a grid?

Hello everyone,

I made a grid with the functions pygmt.blockmean and pygmt.xyz2grd (just like this tutorial : )

And I would like to have the coordinates of the grid or at least the blocks. I know that I can print and save in a csv the data obtained with these functions but they don’t give me the right answer.

By plotting the data obtained by the function pygmt.blockmean, I have coordinates of the main point in each block. And with pygmt.xyz2grd, I have coordinates that make a diagonal of a part of the grid.

However, I need to have the coordinates of each block (at least the top left corner of each block).

Thank you for your answers !