missing function "InterpFromGrid"

rlaw

Hi,

I'm using the development build of ISSM on Linux, and reading some BedMachine data in with the function interpBedmachineGreenland. This in turn calls on InterpFromGrid, however user@$ISSM_DIR/src/m$ grep -r "InterpFromGrid(" . does not seem to return a function path, though it does return quite a few uses of InterpFromGrid.

I can find InterpFromGrid mentioned in the user guide on page 27, but all other instances in the user guide refer to InterpFromGridToMesh. I tried simply copying InterpFromGridToMesh.m to InterpFromGrid.m in the modules directory but I get an error so I guess they're not directly compatible.

In that case I wonder if InterpFromGrid was dropped from the most recent ISSM version and if it's possible to obtain a copy of it for backwards compatibility?

Best :]
Rob

mathieumorlighem

Hi Rob

yes sorry about that, InterpFromGrid is a bit "hidden" and is a very fast alternative to InterpFromGridToMesh. It is still there but you need to compile it manually from source using MATLAB's mex. If you open MATLAB you can run

>> mex([issmdir() '/src/m/contrib/morlighem/modeldata/InterpFromGrid.cpp']);

and it will create a mex file that MATLAB can then interpret and execute.

I hope this helps!
Mathieu

rlaw

Hi Mathieu,

Ok great that works, thanks!

I ran the mex([issmdir() '/src/m/contrib/morlighem/modeldata/InterpFromGrid.cpp']); command in the $ISSM_DIR/src/m/contrib/morlighem/modeldata directory (or I guess moving the mex file to that directory or somewhere on path would also do the trick).

Best,
Rob