HP 7470A Interfacing And Programming Manual
Download Interfacing and programming manual of HP 7470A Plotter for Free or View it Online on All-Guides.com.
AdvancedProgramming Tips
Many software packages read P1 and P2 and use these points to define
the maximum plotting area. Youmay want to obtain the largest plot
possible on the 7470. This is the area of the default window, as deter
mined by the setting of the paper switch, not the area established by
the default settings of P1 and P2. The first three lines of the following
listing will read the window size and set P1 and P2 to these points, so
that the largest area possible is used for plotting. In order to change the
plotting area, this HP-GL routine should precede the PLOTTER IS
statement when programming on HP desktop computers in AGL.
Sometimes you want more than one plot on a page. The rest of the
instructions set the window to, and outline four separate areas. A small
space has been left between each area by adding or subtracting a
constant value from X—and Y—coordinatesin the center of the total area.
This program could be modified to divide the plotting area into thirds
or into areas of any other size. Another application of windowing is
shading rectangular areas for bar graphs. SeeAdvanced Programming
Tips, Chapter 8.
“IN;DN”
!INSERT LINE T0 REHD CUDRDIHHTES INTO H,B,C,D
“IP“;H,B,C,D
“IN”;H,E;C/2-100;D/2-100;”SP1;PH“;H;B
“PD”;C/2-100;B;C/2-100;D/2-100;H;p/2-100;H;B;“PU”
“IN”;C/2+100;B;C;D/2—100;“SP2;PU“;C/2+100;B
“PD”;C;B;C,D/2-100;C/2+100;D/2-100;C/2+100;B;“PU“
“IN”;C/2+100;D/2+100;C;D;“SP1;PH”;C/2+100;Dx2+10O
“PD”;C;D/2+100;C;D;C/2+100;D;C/2+100;D/2+100;”PU;“
“IN”;H;D/2+100;C/2-100;D;“PU;SP2;PH”;H;D/2+10O
“PD”;C/2-100;D/2+100;C/2—100;U;H;D;H;D/2+100;“SPO;“
Reduced Plot
ESTABLISHING BOUNDARIES AND UNITS 2-11