Edit bathymetry

Is there some way to edit the bathymetry ?, Something like editmask in crocotools(matlab) but with the bathymetry?
Thanks so much

Hi, We had this code

https://github.com/AndresSepulveda/CROCO_plots/blob/master/edit_grdbat.m

but works only for Matlab 2012a version, not with the new versions… Maybe you can update it…