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Θ SIMU: when selected, and if more than one graph is to be plotted in the
same set of axes, plots all the graphs simultaneously.
Press @)PLOT to return to the PLOT menu.
Generating plots with programs
Depending on whether we are dealing with a two-dimensional graph defined
by a function, by data from ΣDAT, or by a three-dimensional function, you need
to set up the variables PPAR, ΣPAR, and /or VPAR before generating a plot in a
program. The commands shown in the previous section help you in setting up
such variables.
Following we describe the general format for the variables necessary to
produce the different types of plots available in the calculator.
Two-dimensional graphics
The two-dimensional graphics generated by functions, namely, Function, Conic,
Parametric, Polar, Truth and Differential Equation, use PPAR with the format:
{ (x
min
, y
min
) (x
max
, y
max
) indep res axes ptype depend }
The two-dimensional graphics generated from data in the statistical matrix
ΣDAT, namely, Bar, Histogram, and Scatter, use the ΣPAR variable with the
following format:
{ x-column y-column slope intercept model }
while at the same time using PPAR with the format shown above.
The meaning of the different parameters in PPAR and ΣPAR were presented in
the previous section.