numgrid

numgrid, a Python code which defines and numbers a subset of the nodes in a regular nxn grid of the [-1,+1]x[-1,+1] unit square.

The regions that can be defined include

• S: the entire square.
• L: the L-shaped domain made from 3/4 of the entire square.
• C: like the 'L', but with a quarter circle in the 4-th square.
• D: the unit disk.
• A: an annulus.
• H: a heart-shaped cardioid.
• B: the exterior of a "Butterfly".

Licensing:

The computer code and data files made available on this web page are distributed under the MIT license

Languages:

numgrid is available in a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

Source Code:

• numgrid.py, the source code.
• numgrid.sh, runs all the tests.
• numgrid.txt, the output file.