**fd1d_display_test**,
a MATLAB program which
call fd1d_display() to read and display finite difference data.

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

fd1d_display, a MATLAB program which reads a pair of files defining a 1D finite difference method (FDM) model, and plots the data.

- fd1d_display.m, calls all the tests.
- fd1d_display.sh, runs all the tests.
- fd1d_display.txt, the output file.

**ARCTAN** contains sample data from the arctangent function
at 29 non-uniformly spaced nodes.

- arctan_nodes.txt
- arctan_values.txt
- arctan.png, a PNG snapshot of the plot.

**PAIR** shows how a plot is made when there are two columns of
data in the "values" file. The first column is a copy of the
original ARCTAN data, and the second column is some perturbed values.

- pair_nodes.txt
- pair_values.txt
- pair.png, a PNG snapshot of the plot.