Increasing space between frame and figure border

Hello folks,
How do I increase the space between frame and figure border in a 3D plot ? Somehow, playing with sizes and basemap the figure is always in the same size but it looks like it’s “squished” into the plot.
Thanks in advance
Captura de tela 2021-10-31 181444

Maybe try setting the plane option in fig.grdview (-N in gmt grdview) to a lower z-value like -6000? This will lift your topography map up a bit more from the X and Y axes.