Convert Cartesian Coordinates to Clock Coordinates
Converts cartesian coordinates (x, y to clock
coordinates (rho, phi)
cart2clock(x, y, circle)
x, y |
Cartesian coordinates. |
circle |
Defines the full circle in the units of |
Be aware that in clock coordinates and polar coordinate the angle phi is differently defined!
Data frame with
rho |
Distance of point from center of coordinate system. |
phi |
Angle between North (12 o' clock), center and the point, measured clockwise. |
Rene Locher
## convert clock coordinates to cartesian coordinates xy <- clock2cart(rho=rep(1,33),phi=seq(0,to=360,length.out=33),circle=360) ## convert the cartesian coordinates back to clock coordinates rhophi <- cart2clock(xy$x,xy$y,circle=360) round(clock2cart(rhophi,circle=360)-xy) ## QED
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