Agl Scaling - HP 7475a Operation And Interconnection Manual

1200
1100
1000
900
sOD
700
SALES $ 600
(V-AXIS)
500
400
300
200
100
Pl (0,0)
0
-1
-2 0
-100
-200

AGL Scaling

Scaling points PI and P2 can also be used in conjunction with AGL,
and some prepackaged software,
ting limits. In AGL, the PLOTTER IS statement causes the plotter to
output the current coordinate locations of PI and P2, in plotter units.
The computer interprets the area defined by PI and P2 as the maxi·
mum software hard·clip plotting limits. Reg ardless of the size of the
software hard-clip plotting limits, the shortest side is scaled from 0 to
lOO
G nUs (graphic display units). The longest side is scaled from 0 to
lOO
G nUs times the ratio of the longest side divided by the shortest
side. Thus, a square plotting area will have
tion, but if the plotting area is twice as long in one direction as the
other, the longest side will have 200 G nus. In this coordinate system,
G nus are the default scaling units and P I is the 0, 0 origin point. AGL
also has provisions for defining and plotting in VUB (user units), With
this system, AGL programs can produce plots within any area defined
by PI and P2 without modifications to the program. Refer to your HP
computer documentation for the information you need to program in
AGL.
PLOITER OPERATION
2-8
1 3 5
2 6
MONTHS
(X-AXIS)
User-Unit Scaling
to
establish software hard·clip plot·
P2
(12,1000)
10 11 12 13
lOO
G nUs in each direc·
14