python函数在2D字段中的一点处插值

Question

I have a 2D pressure field and I would like to interpolate the value at particular set of singular points or locations. I'm suspect downscaling is a solution but before I try and write the functions for python, I was wondering if there is a way/code already in existence. Perhaps scipy has a function but I'm unaware and cannot find any.

Any help is appreciated

Answer 1

Scipy has a 2-dimensional interpolation function:

    scipy.interpolate.interp2d

Information on how to use this function can be found on http://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.interpolate.interp2d.html

    scipy.interpolate.interp2d(x, y, z)

in which x and y are 1-dimensional arrays of coordinates corresponding to the two dimensional array z which is your pressurefield.

x corresponds to the second axis of the z -matrix. y corresponds to the first axis of the z -matrix