Sharp PC-1500A Instruction Manual page 127

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In the example at the right. the pen is moved
to position (100. 150).
In this example. the pen is incorrectly posi-
tioned in the "imaginary" region at position
(1000, 1000).
The pen actually moves toward the right
margin and scrolls the paper back. As it
reaches the right side it continues upward
until it reaches the built·in backing limit of
10cm., at which time it stops.
x
150
0,0
tOOO
- - - --
(100, 150)
t
Ptn position
100
Pens internal
po sition ----- ------
t
Actual
pen position
•
o..__ ___ _ _ -+-1/i'---+ i -~
a
1000
C.6.10. LINE
The LINE command is the primary command of the GRAPH mode. It specifies the movement
of the pen from one point to
~nother.
If the pen is down as it moves, a line is drawn. The LINE
command also allows dashed lines to
be
drawn with eight different dash lengths. The first from
of the LINE command is:
LINE (X1, Y11 ) - (X2, Y2). line-tYpe, color
The starting point of the I ine is determined by the values: of the expressions X1 and Yl_ If
the values of the trxpressions X1 and Y1 are omitted, the c· u rrcnt pen position is used for the
starting point (X1, Y1). The destination point of the line is determined by the values of the
expression X2 and Y2. Both the X and the Y values must be in the range -2048 to +2047_ A
value specification which exceeds th is range will produce an err· o r.
The line·type, and color parameters arn optional. If they are omitted. the values used are
the values which were in effect before the command. Color is, of course. one of the colors in the
range 0 to 3. The line·type must be an expression which evaluates to a number in the range O
through 9. Table 2 identifies the meaning of each option :
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