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erase.hlp
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1989-01-09
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757b
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17 lines
ERASE; Erase graphics screen
The ERASE procedure clears the graphics screen. It is not neccessary
to call the ERASE procedure before the first plot as the screen is
automatically erased. Traces generated due to PLOT procedure calls
accumulate on the screen until an ERASE is performed.
Scaling control parameters (YMIN, YMAX, XMIN, XMAX) and labeling
strings current at the time of the first PLOT call are used for all
subsequent PLOTs until an ERASE is executed; even if there are control
statements that reset these parameters between erasures. Subsequent
plots will use the new scaling and labeling values.
ERASE causes the MINMIN and MAXMAX values to be reset.
ERASE should not be grouped with other statements.