Printronix P6000L, User'S Reference Manual

Page: 83 / 234

4-11 Graphics
Plotting the Data
P-Series Plot mode plots the image from the horizontal bit pattern. Figure 4-10 repeats the
pattern shown in Figure 4-4 but referenced for odd dot plot. Eight vertical rows are required,
two characters per row, six columns per character. The characters required to produce the patĆ
tern were found in Table 4-2.
1
2
3
4
5
6
7
8
1 3 11 5 7 9 1 3 11 5 7 9
1st
CHARACTER
ODD COLUMNS
2nd
CHARACTER
ODD COLUMNS
1st
CHARACTER
ASCII DECIMAL
2nd
CHARACTER
ASCII DECIMAL
42
73
92
42
73
92
42
73
*
|
\
*
|
\
*
|
64
65
64
64
65
64
64
65
@
A
@
@
A
@
@
A
DOT
ROW
Figure 4-10. Odd Dot Plot Pattern Plan
The following program uses the odd dot plot control code to produce the image. The image is
printed 25 times as shown in Figure 4-11. An entire dot row is plotted in one printing pass.
Consequently, the first row of all 25 images is printed in one pass, followed by the second row,
etc, until all rows have been printed. Notice the difference between the image printed from Bit
Image graphics shown in Figure 4-5 and the image printed from odd dot plot shown in
Figure 4-11. In the odd dot plot, the second character required to produce the complete imĆ
age contains blank spaces that cause the apparent gaps between images.
10 LPRINT
”
Odd Dot Plot
”
20 FOR I=1 TO 8
30 READ R1
40 READ R2
50 LPRINT CHR$(5);
60 FOR N=1 TO 25
70 LPRINT CHR$(R1);CHR$(R2);
80 NEXT N
90 LPRINT
100 NEXT I
110 DATA 42, 64, 73, 65, 92, 64, 42, 64, 73, 65, 92, 64, 42, 64, 73, 65
120 LPRINT