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This directory contains the files needed for validation tests of several of
the plot utilities. The tests are run by doing `make check'.
The `plot2fig' validation test has been observed to fail on MS-DOS and NeXT
machines, due to incorrect formatting of floating-point numbers. If any of
the other tests should fail, please report it.
HOW THE TESTS ARE DONE
Each .test script generates a .out output file, which is compared with the
corresponding .xout (`expected output') file. If there are any significant
differences, the test fails.
Most of the generated .out files are translations of the file `graph.xout'
to other graphics formats. The file `graph.xout' is in the portable
(human-readable) variant of GNU Metafile format. You may view it in a
popped-up X window, if you are interested, by doing `plot -TX graph.xout'.
SPECIAL FEATURES
The plot2pcl.test script compares the generated output against either
plot2pcl.xout or plot2pcl.yout. The latter is used if the
`--enable-ps-fonts-in-pcl' option was passed to `configure'. In that case
a different comparison file is needed, because `--enable-ps-fonts-in-pcl'
allows the output from `plot -Tpcl' to contain any of the 35 PS fonts, such
as Times-Roman.
The comparison performed by plot2hpgl.test is similar.
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