What are the commonly used gis calculation methods
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In system development, some commonly used spatial algorithms are sometimes used, and citing some class libraries can solve the problem, but sometimes the running efficiency of class libraries is relatively slow, and there are many things to be referenced. If there are not many methods needed, you can write some simple calculation methods.
Here are some common gis calculation methods:
/ / determine whether the point is in the noodle.
Public bool IsPointInPolygon (List poly, CVector point)
{
Int i, j
Bool c = false
For (I = 0, j = poly.Count-1; I < poly.Count; j = iTunes +)
{
If (Polyi] .VY aP.VY)
{
CET.minY = aP.VY
}
Else if (cET.maxY < aP.VY)
{
CET.maxY = aP.VY
}
}
}
Return cET
}
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