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1995-07-10
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10.1.2 PLOT HPGL
The PLOT HPGL command is used to create plots on the Hewlett-Packard range
of pen plotters or any plotter that supports the HPGL plotting language or
a compatible language.
Plots can be created at any size supported by the plotter and in up to 7
different colours.
COMMAND FORMAT
#PLOT HPGL [modifiers] :Win x1 x2
or
#PLOT HPGL [modifiers] [CR]
If the command is terminated with a colon, a plot window can be defined by
entering two locations to define the extents of a window. If the command
is terminated with a return, the entire sheet will be plotted. The bottom
left corner of the window or sheet is used as the plot origin.
The plot will be created at a one to one scale with the sheet size and
units.
MODIFIERS
TO Requires the name of a file or device to direct all plot
commands. If this modifier is omitted, then the plot commands
will be directed to the device PAR: - the parallel port - as
the plotter is usually connected to this port. If the plotter
is connected to the serial port then the command
#PLOT HPGL TO SER:
should be used.
Plot commands can be directed to a disk file for later or
background plotting.
PENSPEED The PENSPEED command is used to select the pen speed for the
plotter. Ink pens require a slow speed whereas felt tipped
pens can use a much faster plotting speed. The range of pen
speeds available is 2 - 127 cm/sec. Refer to your plotter
manual for its speed capabilities.
SCALE Can be used to alter the scale of the plot. If the modifier
is omitted, then a scale of 1.0 will be used.
OFFSET The OFFSET modifier can be used to specify an xy offset for
the origin of the plot. The modifier requires 2 values
separated by a comma, these are the x and y values at which
to offset the plot origin. The values must be entered in
millimetres. For example:
#PLOT HPGL OFFSET 30,60
Will offset the origin of the plot by 30 millimetres in the
x direction and 60 millimetres in the y direction.
Negative values can be used.
ROTATE The ROTATE modifier can be used to specify that the drawing
should be rotated through 90 degrees prior to being plotted.
ORIGIN The ORIGIN modifier is used to specify the default pen origin
of the plotter. The modifier can be followed by one of two
keywords:
LOWER_LEFT Used if the plotter origin is at the lower
left corner of the plotting area. This is
the default value.
CENTRE Used if the plotter origin is at the centre
of the plotting area.
SHADEPITCH Used to specify the vertical distance between horizontal
lines used to emulate a colour filled polygon. The value
must be entered in millimetres. If this modifier is omitted,
a value of 0.5 mm is used.
NOFILL The NOFILL modifier can be used to inhibit any filled areas
of a drawing being plotted.
MONO The MONO modifier can be used to create a single colour plot.
All entities will be plotted using pen 1.