Hello everyone,

In order to solver a simple mildslope equation (in 2D), I’d like to make calculation over a bathymetry (variable depth). I have a grid with the coordinates x, y, z .

My problem is in the mildslope equation, I will have to use a function h(x,y) = z (the bathymetry) over all the domain. But I can’t find a way to define thise function. Do you have any idea ?

What I did tried for now :

I made a mesh Th on Freefem, and obtained Th.x and Th.y. I then made a nearest neighbour (with python) between Th.x,Th.y and x,y,z to make correspond the “z” of my grid to my mesh.

I thought I could then re-use my new grid on Freefem to solve my problem but did not succeed.

Thanks for reading,

Best,