MalcolmWoodruff/LineTerra | Paclet Repository

MalcolmWoodruff`LineTerra`

LTExportCoords

LTExportCoords[ips]
	gives a Dataset of setting-out coordinates along the alignment ips in WGS84 latitude and longitude.

LTExportCoords[ips,crs,spacing,originLL]
	works in the coordinate reference system crs -- "Local", "WGS84", "OSGB36" or "EPSG:nnnnn" -- with a point every spacing metres along the curve-resolved centreline, and originLL giving the terrain's lat/lon origin. A spacing of 0 exports the IPs alone. Design RL and ground RL columns are appended wherever that data exists.

Details and Options

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A spacing of 0 exports the intersection points alone. A spacing above zero exports setting-out points every N metres along the curve-resolved centreline, with the end point always included -- which is what a curved road actually looks like on the ground rather than just its IPs.

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Design RL and ground RL columns are appended automatically wherever that data is available.

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The Local grid involves no datum conversion, so it needs no terrain origin and is always available. WGS84 works for any terrain type. OSGB36 and EPSG codes need a latitude/longitude terrain origin, and fail with a "No originLL" message without one.

Examples

(0)

SeeAlso

LTCoordsToClipboard

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LTConvertToGrid

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LTExportAlignment

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