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Finds the nearest line feature to a point and returns information about it.
dist = CoordToLineDistance(coord c, real search_threshold)
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Argument |
Contents |
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c |
The location of the point |
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search_threshold |
The maximum size of the search area. Only line features that pass within search_threshold of the point are located and tested |
An array with the following elements:
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Element |
Type |
Contents |
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1 |
Integer |
The ID of the nearest line |
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2 |
Coord |
The coordinate of the nearest point on the line to c |
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3 |
Real |
The distance from c to the nearest part of the line |
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4 |
Array |
The integer ID of end node 1 and the real distance from c to end node 1 |
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5 |
Array |
The integer ID of end node 2 and the real distance from c to end node 2 |
CoordToLineDistance() works only on a line layer in a standard geographic file.
The distance to the line is the length of the normal dropped from the point to the line.
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Error Type |
Meaning |
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Error |
The current layer is the wrong type |
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NotFound |
There is no link within the given search_threshold |
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Function |
Summary |
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Finds the map feature nearest a point location |
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Fills a field in a layer with information about the nearest feature in another layer |
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Returns the IDs of the two endpoints of a link |
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Finds the distance from a coordinate to a line |
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