Mapping data between domains/boxes

[rbielaw]

Hello,

I'm trying to figure out the best way to map data between two domains that overlap. For context, to make in-situ analysis and generation of png files easier, it is desired to have some sub-region of the total domain mapped onto a grid with constant spacing. I can generate a box with the desired domain and spacing but was wondering if there were functions to do the averaging/mapping between the simulation domain and this newly created box?

Thanks

[WeiqunZhang]

Maybe you can take a look at AmrData::FillVar.

amrex/Src/Extern/amrdata/AMReX_AmrData.H

Line 120 in a3e1758

// fill a databox using conservative interpolation

There are some examples in amrex/Tools/C_util and amrex/Tools/Postprocessing/C_Src showing how to use DataServices, AmrData and FillVar.

You can also write your own function and use the fillpatch functions FillPatchSingleLevel and FillPatchTwoLevels in AMReX_FillPatchUtil.H.