fd1d_display_test, a MATLAB code which call fd1d_display(), which reads and displays finite difference data.
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fd1d_display, a MATLAB code which reads a pair of files defining a 1D finite difference method (FDM) model, and plots the data.
ARCTAN contains sample data from the arctangent function at 29 non-uniformly spaced nodes.
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.