HP 50g User Manual page 722

CENTR (g)
The command CENTR takes as argument an ordered pair (x,y) or a value x,
and adjusts the first two elements in the variable PPAR, i.e., (x
(x , y ), so that the center of the plot is (x,y) or (x,0), respectively.
max max
SCALE (h)
The SCALE command determines the plotting scale represented by the number
of user units per tick mark. The default scale is 1 user-unit per tick mark. When
the command SCALE is used, it takes as arguments two numbers, x
y , representing the new horizontal and vertical scales. The effect of the
scale
SCALE command is to adjust the parameters (x
PPAR to accommodate the desired scale. The center of the plot is preserved.
SCALEW (i)
Given a factor x
that factor. The W in SCALEW stands for 'width.' The execution of SCALEW
changes the values of x
SCALEH (j)
Given a factor y
factor
factor. The H in SCALEH stands for 'height.' The execution of SCALEW
changes the values of y
Note: Changes introduced by using SCALE, SCALEW, or SCALEH, can be
used to zoom in or zoom out in a plot.
ATICK (l)
The command ATICK (Axes TICK mark) is used to set the tick-mark annotations
for the axes. The input value for the ATICK command can be one of the
following:
A real value x : sets both the x- and y-axis tick annotations to x units
A list of two real values { x y }: sets the tick annotations in the x- and y-axes
to x and y units, respectively.
A binary integer #n: sets both the x- and y-axis tick annotations to #n pixels
, the command SCALEW multiplies the horizontal scale by
factor
and x
min
, the command SCALEH multiplies the vertical scale by that
and y
min
min
in PPAR.
max
in PPAR.
max
, y
min
, y ) and (x
min max
) and
min
and
scale
, y ) in
max
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