Defining curvilinear grids in rectangular boxes

In this recipe, we will learn how to create a curvilinear grid with its own coordinate system, within a rectangular axis that uses the Cartesian coordinate system. We will plot a simple line graph between two points represented by curvilinear coordinates.

This is essentially a custom-developed curvilinear coordinate system, for which we have to define the functions that map from curvilinear coordinates to Cartesian coordinates and in reverse direction. In subsequent recipes, we will learn about the predefined transformations provided by the axistartist class.

Getting ready

You'll need to import the required libraries using the following commands:

import numpy as np
import...