Roland DXY-1300 Command Reference Manual page 10

EXPAND
(DIP SW 1-(6) ON)
0 0
( , )
Absolute Coordinates and Relative Coordinates
There are two methods to specify a coordinate: (1) absolute coordinates, which represent a
specified point by its distance from the origin (0,0) and (2) relative coordinates, which repre
sent a specified point by its distance from the current position. For instance, line 20 in Exam
ple 1-1 plots a straight line in absolute coordinates.
[EXAMPLE 1-1]
10 LPRINT "M1
20 LPRINT "D400,800;"
If relative coordinates are used here, line 20 must be rew ritten as follows:
2 0 LPRINT "1300,600;"
The I command performs straight line plotting in relative coordinates. Since the pen position in
line 10 is (100,200), an I command with the relative coordinate (300,600) for the distance
from the current position will plot up to the absolute coordinate (400,800).
Fig. 1 - 6
,200;
0 0 "
(400,800)
Absolute coordinate
(300,600)
Relative coordinate
100 200
( , )
Absolute coordinate
Fig. 1-7
1-4
0.025mm unit 0.1mm unit
(17272,11880) (4318,2970)