Can greenspline module perform interpolation on two-dimensional vector data?

Q&A
1

Dear

I have an ASCII file with 4 columns, representing longitude, latitude, value, and the azimuth of the value. These data are unevenly distributed in space. I want to interpolate them into two grid data along the north-south and east-west directions for practical purposes. Does anyone know how to do this?

Note that this involves interpolating vectors, so the surface module is unsuitable. I came across a paper by Professor Sandwell in the literature, and it seems like he used greenspline for vector interpolation. I’ve attempted but failed, which I attribute to my unfamiliarity with the module.

Does anyone know about this module? Hope to get your help.

2

The only vector gridding we have is the gpsgridder that uses coupled elasticity to grid GPS vectors. greens-line is scalar gridding. You can see if gpsgridder and the paper reference explaining it is useful for you.

3

Hi~ Prof. Wessel, Thank you for the reply, I’ll try using gpsgridder to see if it meets the requirements.