Description Usage Arguments Details Value Note Author(s) See Also Examples
Check direction of polygon for Right Handed orietnation
1 | dircheck(pol)
|
pol |
list of x,y |
Gets cross product of consecutive points in polygon and returns the sign of each. If most are positive, should try to reverse.
vector of signs
Co-linear values should return zero.
Jonathan M. Lees<jonathan.lees@unc.edu>
rev2RH, flipZEE
1 2 3 4 5 6 7 8 |
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