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NAME curves.2 - geometric curve
generating user function
SYNOPSIS fn curves.2
[range]
[,which [par1
par2 ...]]
DESCRIPTION The function curves.2 generates
a number of geometric curves. When invoked without
arguments, the user is prompted to enter range values for the
curve's start, finish and number of intervals, and then to select
a curve from a list of the types available.
Since this is a type 2 function, both x
and y are functions of a parametric
variable. Most of the curves in curves.2
are expressed in polar form, with the radius r given as a
function of polar angle z, and it is z (in degrees)
that is treated as the parametric variable. A range
from 0 to 360 is appropriate for most of the sample
curves. (For the spirals, of course, you may want to
go around many more times.)
You can give the index number of curve
which and, optionally, new parameters on the
command line from C-PLOT. You must precede the
index number and parameters with a comma to separate them from
the position held by the range values for the parametric variable
(see
fn). If you don't enter new
parameters, the previous ones will be used.
EXAMPLE fn curves.2 -360 360 120 , 6 1
-90
SEE ALSO
fn
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Last Formatted Jan 24, 2012
Last Updated 11/23/95
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