There are two filters in this package which are based on the Roland plotter command set. 1. DXY: A simple command set which is used with all DXY plotters 2. RD-GL: This command set is a superset of the HP (Hewlet Packard) graphics language. Not all the commands of DXY or RD-GL (HPGL) are implemented (approx 95% are) and those commands that are not are skipped and a warning given. It is very easy to add to this filter if a particular unimplemented command is desired. If you wish to implement a command go to the relevant portion in the command switch "dxycom.c" or "hpglcom.c" and call an appropriate user written procedure. (You will need a good knowledge of writing PostScript programs) The filters use the the procedure "getopt" which is used to interpret command line options and arguments and is normally available on 4.3 bsd and Sys V Unix. For those sites running 4.1 or 4.2 it may be available as a local library and must be written into the Makefile. IF YOU DONT HAVE GETOPT YOU WILL HAVE REWRITE THE CODE THAT INTERPRETS COMMAND LINE OPTIONS AND ARGUMENTS. NOTE 1: The method of writing text is not fully compatible with HPGL and will be changed at a later date. NOTE 2: The PostScript macros are written into a C procedure to allow each filter to be a single stand alone program. These macros can easily be incorporated into other filter programs. I have written some test procedures for the testing of each filter they are "test1.hpgl" for hpgl2ps and "test1.dxy" for dxy2ps. Don McCormick.
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hpgl2ps – Translate HPGL to PostScript
An ancient converter, which covers (most of) the language of DXY plotters, and RD-GL format (a superset of HPGL at the time the program was written). The converter doesn't cover all of the respective languages, but warns about things it doesn't understand.
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convert a foreign graphics format for use with TeX|