DotSpatial Point-nearby-Polygon function

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I need to check, If a point from a beginning or an end of a line is nearby a polygon. The target is to check, whether the line is nearly connected to a polygon.

I tried a lot functions from DotSpatial. I work with lat/lng coordinates in wgs84 system. Does anybody has an idea which function I have to use for this problem?

In DotSpatial there are a lot of functions like touches, intersect, and so on. Is there mayb an option to set an offset or something like that for these functions?



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