How to control the frame interval in PyGMT

Hi, I am new to PyGMT, I create a gridimage as shown above, the relevant code is

fig.grdimage(grid=grid_subset,projection="Cyl_stere/0/60/12c", region=region,frame='a')

I have two questions:

  1. How can I increase the x-axis frame interval (now it’s too dense), the x-axis tick frequency is ok

  2. How to change the y axis tick frequency? Now I have [50, 60, 70], but I want to have [50,55,60,65,70]

Any suggestion is welcome…

Best wishes from Norway

Please see the description of -B option in the cookbook.