hp_glplotf translates Alias plot files into HP-GL (IBM GL) format files that are suitable for plotting on any supported plotter.
hp_gl2plotf creates similar output, but includes initialization commands required for HP-GL2 plotters.
hp_glplotf and hp_gl2plotf are filters which take input from stdin or <in_file> and send output to stdout or <out_file>, which would normally be sent to lp.
| hp_glplotf [-a] [-c<x>[<y>]] [-h] [-i] [-m<model>] [-n] [-p<paper>] [-r<angle>] [-s] [t # #] [<in_file> [<out_file>]] | |
| -a | specifies automatic feed is to be used. |
| -c<x>[<y>] | specifies scale correction factors. |
| -h | displays the on-line help. |
| -i | displays version information. |
| -m<model> | specifies the plotter model type. |
| -n | separates HPGL plot commands on new lines. |
| -p<paper> | specifies the paper type. |
| -r<angle> | specifies the force plot rotation angle. |
| -s | sizes the plot produced automatically. The plotter’s default size is used. |
| -t # # | specifies the text scaling where # and # are the width and height. |
| <in_file> | reads input from the file <in_file>. The default is to read from stdin. |
| <out_file> | writes output to the file <out_file>. The default is to write to stdout. |
Some plotters can be fitted with a spool feed or have an automatic page advance option. This also applies to printers like the IBM-4019 and IBM-4029, which can automatically advance the page. To tell the plotter driver that you are using the spool feed option the following option should be specified:
-fa
When large plots are plotted, some inaccuracies can creep in over large distances. As an interim fix, it is possible to compensate for this error by specifying x and y correction factors. The default x and y correction factor is 1.0, which is no correction at all. The correction factors are used internally as multipliers.
If you plotted something that should have come out 30" and it came out to 30.125", the plot was 0.125" too large. Assuming that the same error occurs in both the x and y directions, you would need a correction factor of 30/30.125 = 0.9959. The following should compensate for the error:
-fc0.9959
