pwl_interp_1d_test, a Fortran90 code which calls pwl_interp_1d(), which interpolates a set of data with a piecewise linear function, creating graphics files for processing by gnuplot().
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pwl_interp_1d, a Fortran90 code which interpolates a set of data using a piecewise linear function, creating graphics files for processing by gnuplot().
The test program makes files which can be used by GNUPLOT to create PNG plots: