I generated a cartesian grid in Python using NumPy's
meshgrid, and I obtained some data over this 2D grid from an unknown function. I want to get an approximation of the value of the function over some points inside the boundaries of the grid which are not part of it. I do not have some other unstructured grid, I just want to know the value in certain points. I assume I have to interpolate the data somehow, but I am very clueless on this and reading the documentation about the
interpolate module of SciPy and some related components doesn't help. How can I find out this interpolated data?
Note: I know what I want to accomplish, but I have never done a task like this before and I have some problems formulating this question in terms of proper concepts and vocabulary. If I am not clear enough please help me improve my question.