henon - plot the phase space of the Henon system
henon [-width integer] [-height integer] [-skip integer]
[-swap] [-points integer] [-delay integer] [-A dou-
ble] [-B double] [-ulx double] [-uly double] [-lly
double] [-box integer] [-bulx double] [-buly dou-
ble] [-blly double] [-data] [-inv] [-mag integer]
The phase space of the Henon system, which is described by
the equation x(t+1) = A - x(t)^2 + B * x(t - 1), is plot-
ted according to the specified parameters.
Width of the plot in pixels.
Height of the plot in pixels.
Number of initial points to skip.
-swap Swap the x and y axis?
Number of points to plot.
Time steps to delay for.
Value of the A parameter.
Value of the B parameter.
Upper-left corner x-coordinate.
Upper-left corner y-coordinate.
Lower-left corner y-coordinate.
Line width for a box.
Box's upper-left x-coordinate.
Box's upper-left y-coordinate.
Box's lower-left y-coordinate.
-data Don't plot, but print points.
-inv Invert all colors?
How to plot points.
The method for choosing the viewable region may seem
counter-intuitive at first, but it has some nice proper-
ties. In particular, selecting the exact (x, y) coordi-
nates for the upper-left corner and only selecting the
lower right y coordinate forces both the x and y scales to
be identical since all scales are uniquely determined by
these values along with the plot width and height. If you
then change the width or height of the plot, the relative
scales will still match up. The options for making a box
No sanity checks are performed to make sure that any of
the options make sense.
Copyright (c) 1997, Gary William Flake.
Permission granted for any use according to the standard
GNU ``copyleft'' agreement provided that the author's com-
ments are neither modified nor removed. No warranty is
given or implied.
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