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gnuplot 4.4
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Coordinates specified as "time" wrap at 24 hours, and have a precision limited to 1 second. This is in
particular a limitation in using time format to handle geographic coordinates.
Error bars are not handled properly in polar/spherical coordinate plot modes.
The ’nohidden3d’ option that is supposed to exempt individual plots from the global property ’set
hidden3d’ does not work for parametric curves.
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External libraries
External library GD (used by PNG/JPEG/GIF drivers): Versions of libgd through 2.0.33 contain various
bugs in mapping the characters of Adobe’s Symbol font. Also it is possible to trigger a library segfault
if an anti-aliased line crosses an upper corner of the canvas.
External library PDFlib (used by PDF driver): Gnuplot can be linked against libpdf versions 4, 5, or
6. However, these versions differ in their handling of piped I/O. Therefore gnuplot scripts using piped
output to PDF may work only for some versions of PDFlib.
External library svgalib (used by linux and vgagl driver): Requires gnuplot to be suid root (bad!) and
has many bugs that are specific to the video card or graphics driver used in X11.
Internationalization (locale settings): Gnuplot uses the C runtime library routine setlocale() to control
locale-specific formatting of input and output number, times, and date strings. The locales available,
and the level of support for locale features such as "thousands’ grouping separator", depend on the
internationalization support provided by your individual machine.
Part VII
Index