PLRAX plots a circular axis for plotting in polar form. A series of concentric circles are drawn around (x,y) at increasing radi to the maximum radius. Provisions are included for half circle, quarter circle, etc. Labeling of starting points and ending points may be changed.
CALL PLRAX (x,y,r,as,ae,a0,a1)
x (R): x coordinate of center of polar axis
y (R): y coordinate of center of polar axis
r (R): radius of polar axis in plot units
as (R): starting angle of axis in degrees from horizontal
ae (R): ending angle of axis in degrees from horizontal
Note: as=0 and ae=360 yields full circle axis
a0 (R): number label of starting angle
a1 (R): number label of ending angle
Note: if a0=a1 then angles are not labeled.