Polar Graphing 330
Note: You can use a negative qstep. If so, qmin must be greater than qmax.
Standard values (set when you select
6:ZoomStd from the „ Zoom toolbar menu) are:
You may need to change the standard values for the q variables (q
min, qmax, qstep) to
ensure that enough points are plotted.
Setting the Graph Format
To display coordinates as
r and q values, use:
q
step Increment for the q value. Polar equations are evaluated
at:
r(
qmin)
r(
qmin+qstep)
r(
qmin+2(qstep))
... not to exceed ...
r(qmax)
xmin, xmax,
ymin, ymax
Boundaries of the viewing window.
xscl, yscl Distance between tick marks on the x and y axes.
qmin = 0. xmin = L10. ymin = L10.
qmax = 2p
(6.2831853... radians or
360 degrees)
xmax = 10. ymax = 10.
qstep = p/24
(.1308996... radians or 7.5
degrees)
xscl = 1. yscl = 1.
Variable Description
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