is.clockwise | R Documentation |
owin
are clockwiseCheck whether points for an owin
are clockwise
is.clockwise(x)
x |
a data frame with x coordinates in the first column and y coordinates in the second. |
Similarly to owin
, the polygon should not be closed
A logical telling whether the polygon is arranged clockwise.
Mikko Vihtakari, but the idea has been scavenged from https://stackoverflow.com/a/1165943/1082004
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