require(["esri/geometry/coordinateFormatter"], (coordinateFormatter) => { /* code goes here */ });
import * as coordinateFormatter from "@arcgis/core/geometry/coordinateFormatter.js";
esri/geometry/coordinateFormatter
Converts between points and formatted coordinates notation strings such as:
- decimal degrees
- degrees, minutes, and seconds
- U.S. National Grid (USNG)
- Military Grid Reference System (MGRS).
To use the conversion methods, the load() method must be called first
if isLoaded() is false.
Known Limitations
- The browser must support WebAssembly for this module to work.
- The methods that convert formatted strings to points expect the spatial reference parameter to be a geographic coordinate system.
- The methods that convert points to formatted strings expect the point's spatialReference to be a geographic coordinate system.
// The latitude/longitude string to be converted
let latlon = "55 56 39.123N 003 09 43.034W"
// Load dependencies of "coordinateFormatter" module
coordinateFormatter.load().then(function() {
// Once the promise returned by load() is resolved,
// use the fromLatitudeLongitude() method to convert
// latitude/longitude string to a point geometry.
let point = coordinateFormatter.fromLatitudeLongitude(latlon);
});Method Overview
| Name | Return Type | Summary | Object |
|---|---|---|---|
Parses coordinates in latitude/longitude notation, and returns a Point representing that location. | coordinateFormatter | ||
Parses coordinates in Military Grid Reference System (MGRS) notation, and returns a Point representing that location. | coordinateFormatter | ||
Parses coordinates in United States National Grid (USNG) notation, and returns a Point representing that location. | coordinateFormatter | ||
Parses coordinates in Universal Transverse Mercator (UTM) notation, and returns a Point representing that location. | coordinateFormatter | ||
Indicates if all dependencies of this module have been loaded. | coordinateFormatter | ||
Indicates if this module is supported in the current browser. | coordinateFormatter | ||
Promise | Load this module's dependencies. | coordinateFormatter | |
Returns formatted coordinates in latitude/longitude notation representing the given point's location. | coordinateFormatter | ||
Returns formatted coordinates in Military Grid Reference System (MGRS) notation representing the given point's location. | coordinateFormatter | ||
Returns formatted coordinates in United States National Grid (USNG) notation representing the given point's location. | coordinateFormatter | ||
Returns formatted coordinates in Universal Transverse Mercator (UTM) notation representing the given point's location. | coordinateFormatter |
Method Details
-
fromLatitudeLongitude
MethodfromLatitudeLongitude(coordinates, spatialReference){Point}static -
Parses coordinates in latitude/longitude notation, and returns a Point representing that location. The coordinates may use decimal degrees, degrees and decimal minutes, or degrees, minutes, and seconds format. The spatial reference provided must have an ellipsoid and datum matching those used by the source of the latitude/longitude string. If no spatial reference is provided, it is assumed the latitude/longitude coordinates are in WGS84.
Supported characters
Symbol Character Name Unicode number HTML code Degree * Asterisk U+002A * ^ Circumflex Accent U+005E ^ ~ Tilde U+007E ~ ° Degree Sign U+00B0 ° º Masculine Ordinal Indicator U+00BA º Minute ' Apostrophe U+0027 ' ′ Prime U+2032 ′ Second " Quotation Mark U+0022 " ″ Double prime U+2033 ″ The latitude/longitude string may contain leading and trailing whitespace, and may also contain a space, comma, or vertical bar symbol to separate the latitude from the longitude. It may also contain the characters 'N', 'S', 'E' and 'W', or use a minus (-) symbol to indicate the hemisphere of each value.
Latitude/longitude notation examples:
- 55 56 39.123N 003 09 43.034W
- 55°56′39″N 3°09′43″W
- 55*56′39″N 3°09′43″W
- 55~56.65205', -003~09.71723'
- 55.9442008* | -3.1619539*
Parameterscoordinates StringThe latitude/longitude notation string for the coordinates.
spatialReference SpatialReferenceoptionalA spatial reference object representing a geographic coordinate system. If
null, WGS84 will be used.ReturnsType Description Point Returns a point with the location from the coordinates string in the spatial reference provided.
-
fromMgrs
MethodfromMgrs(coordinates, spatialReference, conversionMode){Point}static -
Parses coordinates in Military Grid Reference System (MGRS) notation, and returns a Point representing that location. The spatial reference provided must have an ellipsoid and datum matching those used by the source of the MGRS string. If no spatial reference is provided, it is assumed the MGRS string is referenced to WGS84.
Note that the choice between zone 01 and 60 has no impact when reading from an MGRS notation string. The MGRS string can contain leading and trailing whitespace and can have whitespace between the grid zone designator, the 100km square identifier, and the numerical eastings and northings.
MGRS notation examples:
- 30UVG898998
- 30UVG 89885 99877
Parameterscoordinates StringThe MGRS notation string for the coordinates.
spatialReference SpatialReferenceA spatial reference object representing a geographic coordinate system referenced by the MGRS coordinates. If
null, WGS84 will be used.conversionMode StringThe mode used by the given MGRS coordinates.
Possible Values:"automatic"|"new-180-in-zone-01"|"new-180-in-zone-60"|"old-180-in-zone-01"|"old-180-in-zone-60"
ReturnsType Description Point Returns a point with the location from the MGRS string in the spatial reference provided.
-
fromUsng
MethodfromUsng(coordinates, spatialReference){Point}static -
Parses coordinates in United States National Grid (USNG) notation, and returns a Point representing that location.
The spatial reference provided must have an ellipsoid and datum matching those used by the source of the USNG string. If no spatial reference is provided and the USNG string is suffixed with "(NAD 27)", it is assumed the USNG string is referenced to NAD 27. If no spatial reference is provided and no such suffix exists, it is assumed the USNG string is referenced to WGS84.
USNG notation examples:
- 13TFJ 23 59
- 13TFJ2374159574
Parameterscoordinates StringThe USNG notation string for the coordinates.
spatialReference SpatialReferenceoptionalA spatial reference object representing a geographic coordinate system that the USNG coordinates are in. If
null, WGS84 will be used.ReturnsType Description Point Returns a point with the location from the USNG string in the spatial reference provided.
-
fromUtm
MethodfromUtm(coordinates, spatialReference, conversionMode){Point}static -
Parses coordinates in Universal Transverse Mercator (UTM) notation, and returns a Point representing that location. The spatial reference provided must have an ellipsoid and datum matching those used by the source of the UTM string. If no spatial reference is provided, it is assumed the UTM string is referenced to WGS84. The UTM string can contain leading and trailing whitespace and can have whitespace between the zone and latitude designator and the numerical eastings and northings.
UTM notation examples:
- 30U 489885 6199877
- 30U4898856199877
- 30N 489885 6199877 (using N/S indicator)
Parameterscoordinates StringThe UTM notation string for the coordinates.
spatialReference SpatialReferenceA spatial reference object representing a geographic coordinate system that the UTM coordinates are in. If
null, WGS84 will be used.conversionMode StringThe latitude notation scheme used by the given UTM coordinates, either a latitudinal band, or a hemisphere designator.
Possible Values:"latitude-band-indicators"|"north-south-indicators"
ReturnsType Description Point Returns a point with the location from the UTM string in the spatial reference provided.
-
isSupported
MethodisSupported(){Boolean} -
Indicates if this module is supported in the current browser. The browser must support WebAssembly.
ReturnsType Description Boolean Returns trueif this module is supported in the current browser.
-
Load this module's dependencies.
ReturnsType Description Promise Resolves when the dependencies have been loaded. - See also
-
toLatitudeLongitude
MethodtoLatitudeLongitude(point, format, decimalPlaces){String}static -
Returns formatted coordinates in latitude/longitude notation representing the given point's location.
The latitude/longitude string will contain a space separating the latitude from the longitude value, and the characters 'N' or 'S', and 'E' and 'W', to indicate the hemisphere of each value. The string will also contain spaces separating the components (degrees, minutes, seconds) of each value. The precision of the output is controlled by both the
formatanddecimalPlacesparameters.For example:
Decimal places format Example output Angular precision Approximate precision 0 dd 056N 0003W 1deg 100km 1 dd 55.9N 003.2W 0.1deg 10km 2 dd 55.94N 003.16W 0.01deg 1km 3 dd 55.944N 003.162W 0.001deg 100m 0 ddm 55 057N 003 010W 1min 2km 1 ddm 55 56.7N 003 09.7W 0.1min 200m 2 ddm 55 56.65N 003 09.72W 0.01min 20m 3 ddm 55 56.650N 003 09.717W 0.001min 2m 0 dms 55 56 039N 003 09 043W 1sec 30m 1 dms 55 56 39.1N 003 09 43.0W 0.1sec 3m 2 dms 55 56 39.12N 003 09 43.03W 0.01sec 300mm 3 dms 55 56 39.123N 003 09 43.034W 0.001sec 30mm Parameterspoint PointThe location to be represented as a formatted latitude/longitude string. The point's spatial reference should either be WGS84 or another geographic coordinate system.
format StringThe mode to use when formatting the latitude/longitude string.
Possible Values:"dd"|"ddm"|"dms"
decimalPlaces NumberoptionalThe number of decimal places to use, it should be an integer from 0 to 16.
ReturnsType Description String Returns a string representing the latitude/longitude of the given point.
-
toMgrs
MethodtoMgrs(point, conversionMode, precision, addSpaces){String}static -
Returns formatted coordinates in Military Grid Reference System (MGRS) notation representing the given point's location.
Note that the choice between zone 01 and 60 has an impact only when generating the MGRS notation string for a point with longitude of exactly 180deg. The precision value controls the number of digits used to represent each numerical easting and northing value within the MGRS string.
For example:
precision add_spaces Example output Approximate precision 0 false 30UVG 100km 1 false 30UVG89 10km 2 false 30UVG8999 1km 3 false 30UVG898998 100m 4 false 30UVG89889988 10m 5 false 30UVG8988499881 1m 0 true 30U VG 100km 1 true 30U VG 8 9 10m 2 true 30U VG 89 99 1km 3 true 30U VG 898 998 100m 4 true 30U VG 8988 9988 10m 5 true 30U VG 89884 99881 1m Parameterspoint PointThe location to be represented in MGRS notation. The point's spatial reference should either be WGS84 or another geographic coordinate system
conversionMode StringThe mode to use for the returned MGRS notation string.
Possible Values:"automatic"|"new-180-in-zone-01"|"new-180-in-zone-60"|"old-180-in-zone-01"|"old-180-in-zone-60"
precision NumberoptionalThe precision with which to represent the coordinates, it should be an integer from 0 to 8.
addSpaces BooleanoptionalIf
false, the generated string will contain no spaces. Iftrue, a space separates the grid zone designator, the 100km square identifier, and the numerical easting and northing values.ReturnsType Description String Returns a MGRS notation string representing the position of the given point.
-
toUsng
MethodtoUsng(point, precision, addSpaces){String}static -
Returns formatted coordinates in United States National Grid (USNG) notation representing the given point's location. The precision value controls the number of digits used to represent each numerical easting and northing value within the USNG string.
For example:
precision add_spaces Example output Approximate precision 0 false 13TFJ 100km 1 false 13TFJ25 10km 2 false 13TFJ2359 1km 3 false 13TFJ237595 100m 4 false 13TFJ23745951 10m 5 false 13TFJ2374359512 1m 0 true 13T FJ 100km 1 true 13T FJ 2 5 10m 2 true 13T FJ 23 59 1km 3 true 13T FJ 237 595 100m 4 true 13T FJ 2374 5951 10m 5 true 13T FJ 23743 59512 1m 4* false 13TFJ23795929 (NAD 27) 10m 2* true 13T FJ 23 59 (NAD 27) 1km * When the point's spatial reference is based on NAD 27.
Parameterspoint PointThe location to be represented in USNG notation. The point's spatial reference should either be WGS84 or another geographic coordinate system.
precision NumberoptionalThe precision with which to represent the coordinates, it should be an integer from 0 to 8.
addSpaces BooleanoptionalIf
false, the generated string will contain no spaces. Iftrue, a space separates the grid zone designator, the 100km square identifier, and the numerical easting and northing values.ReturnsType Description String Returns a USNG notation string representing the position of the given point.
-
toUtm
MethodtoUtm(point, conversionMode, addSpaces){String}static -
Returns formatted coordinates in Universal Transverse Mercator (UTM) notation representing the given point's location.
Example output for a point in the southern hemisphere:
conversionMode add_spaces Example output latitude-band-indicators false 30U4898846199881 latitude-band-indicators true 30U 489884 6199881 north-south-indicators false 30N4898846199881 north-south-indicators true 30N 489884 6199881 Parameterspoint PointThe location to be represented in UTM notation. The point's spatial reference should either be WGS84 or another geographic coordinate system
conversionMode StringThe latitude notation scheme to use in the returned UTM notation string, either a latitudinal band, or a hemisphere designator.
Possible Values:"latitude-band-indicators"|"north-south-indicators"
addSpaces BooleanoptionalIf
false, the generated string will contain no spaces. Iftrue, a space separates the UTM zone and latitude designator and each numerical easting and northing value.ReturnsType Description String Returns a UTM notation string representing the position of the given point.