LatLon Structure

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Latitude Longitude Pair, expressed in degrees (WGS84 World Geodetic System projection).

Namespace: Telogis.GeoBase
Assembly: geobase.net (in geobase.net.dll) Version: 4.99.0.0

Syntax

[SerializableAttribute]
[TypeConverterAttribute(typeof(LatLonStringConverter))]
public struct LatLon

<SerializableAttribute>
<TypeConverterAttribute(GetType(LatLonStringConverter))>
Public Structure LatLon

The LatLon type exposes the following members.

Constructors

	Name	Description
	LatLon(LatLon)	Create a copy of a LatLon.
	LatLon(String)	Takes a string of form "latitude,longitude" and creates a LatLon object.
	LatLon(UInt64)	Initialize from 64bit integer. See AsInt64.
	LatLon(XmlNode)	Construct a new LatLon from an XML node. As of 4.3: Retrieving the 'Location' attribute if it is present. Pre 4.3: Retrieving the old attributes "Lat" and "Lon".
	LatLon(Double, Double)	Initialize from parameters.
	LatLon(Double, Double, UInt32)	Initializes a LatLon object with a latitude, longitude, and z-level.

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Properties

	Name	Description
	AsInt64	Return Latitude and Longitude packed as a 64bit integer.
	IsValid	True only if this LatLon has been assigned a valid value.
	Lat	Latitude (Y) in degrees.
	Lon	Longitude (X) in degrees.
	WKT	Return this point formatted for WKT (Well Known Text).
	WKTWithZ	Return this point formatted for WKT (Well Known Text) with Z level.
	x	Gets or sets Lon.
	y	Gets or sets Lat.
	ZLevel	Gets or sets the z-level of this LatLon. It is used to determine whether there is a height difference between overlapping LatLons, for example when one road crosses another road as a bridge.

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Methods

	Name	Description
	DistanceTo	Measure distance between this and another LatLon (using GreatCircle(Double, Double, Double, Double)) in the specified units. May have error of up to ~16 cm at equator (less, the further away from the equator the points are)
	Equals	Check for equality with another LatLon by checking if they occupy the same coordinates. (Overrides ValueTypeEquals(Object).)
	FromParts	Create a LatLon from position parameters.
	GetHashCode	Create a hash code for this LatLon. (Overrides ValueTypeGetHashCode.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IsWithin	Check whether this LatLon lies within a box defined by the minimum and maximum LatLons. See remarks.
	PythagoreanDistanceTo	Obsolete. This method is obsolete. Please use QuickDistanceTo(LatLon, DistanceUnit) instead.
	QuickDistanceTo	Measure approximate distance between this and another LatLon (using a Pythagorean approximation). See remarks for comments on the accuracy of this method.
	ToString	Returns the coordinates of this LatLon in the form "Lat,Lon". (Overrides ValueTypeToString.)
	ToStringWithZ	Returns the coordinates of this LatLon in the form "Lat,Lon,Z". If ZLevel is 0 then the ZLevel is omitted.
	ToXmlString	Return the LatLon in it's String With Z form Location="0.000000,0.000000 Z0".

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Operators

	Name	Description
	Equality	Checks two LatLons for equality.
	Inequality	Checks two LatLons for inequality.

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Fields

	Name	Description
	Empty	An empty (null-equivalent) LatLon.

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Extension Methods

	Name	Description
	ToLatLng	(Defined by Convert.)

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Remarks

GeoBase works with the WGS84 World Geodetic System. If your data is in a different projection you will need to reproject the points to work with them in GeoBase. For more information on WGS84 click here (PDF file).

Reference

Telogis.GeoBase Namespace