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# utm-latlng
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LatLng to UTM converter vice versa for Nodejs.
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## Installation
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Via [npm]:
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$ npm install utm-latlng
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## Usage
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### Javascript
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```js
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var utmObj = require('utm-latlng');
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var utm=new utmObj(); //Default Ellipsoid is 'WGS 84'
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OR
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var utm=new utmObj('Everest');
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```
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## Ellipsoid List
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1. Airy
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2. Australian National
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3. Bessel 1841
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4. Bessel 1841 Nambia
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5. Clarke 1866
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6. Clarke 1880
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7. Everest
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8. Fischer 1960 Mercury
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9. Fischer 1968
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10. Fischer 1968
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11. GRS 1967
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12. GRS 1980
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13. Helmert 1906
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14. Hough
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15. International
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16. Krassovsky
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17. Modified Airy
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18. Modified Everest
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19. Modified Fischer 1960
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20. South American 1969
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21. WGS 60
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22. WGS 66
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23. WGS 72
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24. WGS 72
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25. ED50
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26. WGS 84
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27. EUREF89
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28. ETRS89
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### `utm.convertUtmToLatLng(easting, northing, zoneNum, zoneLetter);`
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Convert from UTM to latitude/longitude coordinates.
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Returns `{ lat:xxxxx, lang:xxxxx }`.
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### `utm.convertLatLngToUtm(latitude, longitude,precision);`
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Convert from latitude/longitude coordinates to UTM.
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Returns `{ Easting:xxxxx, Northing:xxxxx, ZoneNumber:xxxx, ZoneLetter:xxxxx }`.
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/* global UTMLatLng */
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var method = UTMLatLng.prototype;
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var datumName = "WGS 84";
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var a;
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var eccSquared;
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var status = false;
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function UTMLatLng(datumNameIn) {
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if (datumNameIn !== undefined)
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{
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datumName = datumNameIn;
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}
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this.setEllipsoid(datumName);
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}
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method.convertLatLngToUtm = function (latitude, longitude,precision)
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{
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if (this.status)
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{
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return 'No ecclipsoid data associated with unknown datum: ' + datumName;
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}
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if(!Number.isInteger(precision))
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{
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return 'Precision is not integer number.';
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}
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latitude = parseFloat(latitude);
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longitude = parseFloat(longitude);
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var LongTemp = longitude;
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var LatRad = this.toRadians(latitude);
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var LongRad = this.toRadians(LongTemp);
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if (LongTemp >= 8 && LongTemp <= 13 && latitude > 54.5 && latitude < 58) {
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ZoneNumber = 32;
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} else if (latitude >= 56.0 && latitude < 64.0 && LongTemp >= 3.0 && LongTemp < 12.0) {
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ZoneNumber = 32;
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} else {
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ZoneNumber = ((LongTemp + 180) / 6) + 1;
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if (latitude >= 72.0 && latitude < 84.0) {
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if (LongTemp >= 0.0 && LongTemp < 9.0) {
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ZoneNumber = 31;
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} else if (LongTemp >= 9.0 && LongTemp < 21.0) {
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ZoneNumber = 33;
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} else if (LongTemp >= 21.0 && LongTemp < 33.0) {
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ZoneNumber = 35;
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} else if (LongTemp >= 33.0 && LongTemp < 42.0) {
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ZoneNumber = 37;
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}
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}
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}
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ZoneNumber = parseInt(ZoneNumber);
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var LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin in middle of zone
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var LongOriginRad = this.toRadians(LongOrigin);
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var UTMZone = this.getUtmLetterDesignator(latitude);
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var eccPrimeSquared = (this.eccSquared) / (1 - this.eccSquared);
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var N = this.a / Math.sqrt(1 - this.eccSquared * Math.sin(LatRad) * Math.sin(LatRad));
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var T = Math.tan(LatRad) * Math.tan(LatRad);
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var C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad);
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var A = Math.cos(LatRad) * (LongRad - LongOriginRad);
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var M = this.a * ((1 - this.eccSquared / 4 - 3 * this.eccSquared * this.eccSquared / 64 - 5 * this.eccSquared * this.eccSquared * this.eccSquared / 256) * LatRad
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- (3 * this.eccSquared / 8 + 3 * this.eccSquared * this.eccSquared / 32 + 45 * this.eccSquared * this.eccSquared * this.eccSquared / 1024) * Math.sin(2 * LatRad)
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+ (15 * this.eccSquared * this.eccSquared / 256 + 45 * this.eccSquared * this.eccSquared * this.eccSquared / 1024) * Math.sin(4 * LatRad)
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- (35 * this.eccSquared * this.eccSquared * this.eccSquared / 3072) * Math.sin(6 * LatRad));
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var UTMEasting = parseFloat(0.9996 * N * (A + (1 - T + C) * A * A * A / 6
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+ (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120)
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+ 500000.0);
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var UTMNorthing = parseFloat(0.9996 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24
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+ (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720)));
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if (latitude < 0)
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UTMNorthing += 10000000.0;
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UTMNorthing = precisionRound(UTMNorthing,precision);
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UTMEasting = precisionRound(UTMEasting,precision);
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return {Easting: UTMEasting, Northing: UTMNorthing, ZoneNumber: parseInt(ZoneNumber), ZoneLetter: UTMZone};
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};
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method.convertUtmToLatLng = function (UTMEasting, UTMNorthing, UTMZoneNumber, UTMZoneLetter)
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{
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var e1 = (1 - Math.sqrt(1 - this.eccSquared)) / (1 + Math.sqrt(1 - this.eccSquared));
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var x = UTMEasting - 500000.0; //remove 500,000 meter offset for longitude
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var y = UTMNorthing;
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var ZoneNumber = UTMZoneNumber;
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var ZoneLetter = UTMZoneLetter;
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var NorthernHemisphere;
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if(UTMEasting===undefined)
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{
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return "Please pass the UTMEasting!";
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}
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if(UTMNorthing===undefined)
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{
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return "Please pass the UTMNorthing!";
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}
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if(UTMZoneNumber===undefined)
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{
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return "Please pass the UTMZoneNumber!";
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}
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if(UTMZoneLetter===undefined)
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{
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return "Please pass the UTMZoneLetter!";
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}
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if (['N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'].indexOf(ZoneLetter) !== -1) {
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NorthernHemisphere = 1;
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} else {
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NorthernHemisphere = 0;
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y -= 10000000.0;
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}
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var LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3;
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var eccPrimeSquared = (this.eccSquared) / (1 - this.eccSquared);
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M = y / 0.9996;
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var mu = M / (this.a * (1 - this.eccSquared / 4 - 3 * this.eccSquared * this.eccSquared / 64 - 5 * this.eccSquared * this.eccSquared * this.eccSquared / 256));
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var phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu)
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+ (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu)
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+ (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu);
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var phi1 = this.toDegrees(phi1Rad);
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var N1 = this.a / Math.sqrt(1 - this.eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad));
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var T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad);
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var C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad);
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var R1 = this.a * (1 - this.eccSquared) / Math.pow(1 - this.eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5);
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var D = x / (N1 * 0.9996);
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var Lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24
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+ (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720);
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Lat = this.toDegrees(Lat);
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var Long = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1)
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* D * D * D * D * D / 120) / Math.cos(phi1Rad);
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Long = LongOrigin + this.toDegrees(Long);
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return {lat: Lat, lng: Long};
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};
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method.getUtmLetterDesignator = function (latitude) {
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latitude = parseFloat(latitude);
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if ((84 >= latitude) && (latitude >= 72))
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return 'X';
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else if ((72 > latitude) && (latitude >= 64))
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return 'W';
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else if ((64 > latitude) && (latitude >= 56))
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return 'V';
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else if ((56 > latitude) && (latitude >= 48))
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return 'U';
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else if ((48 > latitude) && (latitude >= 40))
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return 'T';
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else if ((40 > latitude) && (latitude >= 32))
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return 'S';
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else if ((32 > latitude) && (latitude >= 24))
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return 'R';
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else if ((24 > latitude) && (latitude >= 16))
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return 'Q';
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else if ((16 > latitude) && (latitude >= 8))
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return 'P';
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else if ((8 > latitude) && (latitude >= 0))
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return 'N';
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else if ((0 > latitude) && (latitude >= -8))
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return 'M';
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else if ((-8 > latitude) && (latitude >= -16))
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return 'L';
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else if ((-16 > latitude) && (latitude >= -24))
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return 'K';
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else if ((-24 > latitude) && (latitude >= -32))
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return 'J';
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else if ((-32 > latitude) && (latitude >= -40))
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return 'H';
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else if ((-40 > latitude) && (latitude >= -48))
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return 'G';
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else if ((-48 > latitude) && (latitude >= -56))
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return 'F';
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else if ((-56 > latitude) && (latitude >= -64))
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return 'E';
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else if ((-64 > latitude) && (latitude >= -72))
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return 'D';
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else if ((-72 > latitude) && (latitude >= -80))
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return 'C';
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else
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return 'Z';
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};
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method.setEllipsoid = function (name)
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{
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switch (name) {
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case 'Airy':
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this.a = 6377563;
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this.eccSquared = 0.00667054;
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break;
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case 'Australian National':
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this.a = 6378160;
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this.eccSquared = 0.006694542;
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break;
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case 'Bessel 1841':
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this.a = 6377397;
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this.eccSquared = 0.006674372;
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break;
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case 'Bessel 1841 Nambia':
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this.a = 6377484;
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this.eccSquared = 0.006674372;
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break;
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case 'Clarke 1866':
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this.a = 6378206;
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this.eccSquared = 0.006768658;
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break;
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case 'Clarke 1880':
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this.a = 6378249;
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this.eccSquared = 0.006803511;
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break;
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case 'Everest':
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this.a = 6377276;
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this.eccSquared = 0.006637847;
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break;
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case 'Fischer 1960 Mercury':
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this.a = 6378166;
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this.eccSquared = 0.006693422;
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break;
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case 'Fischer 1968':
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this.a = 6378150;
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this.eccSquared = 0.006693422;
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break;
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case 'GRS 1967':
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this.a = 6378160;
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this.eccSquared = 0.006694605;
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break;
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case 'GRS 1980':
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this.a = 6378137;
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this.eccSquared = 0.00669438;
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break;
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case 'Helmert 1906':
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this.a = 6378200;
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this.eccSquared = 0.006693422;
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break;
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case 'Hough':
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this.a = 6378270;
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this.eccSquared = 0.00672267;
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break;
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case 'International':
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this.a = 6378388;
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this.eccSquared = 0.00672267;
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break;
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case 'Krassovsky':
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this.a = 6378245;
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this.eccSquared = 0.006693422;
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break;
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case 'Modified Airy':
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this.a = 6377340;
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this.eccSquared = 0.00667054;
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break;
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case 'Modified Everest':
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this.a = 6377304;
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this.eccSquared = 0.006637847;
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break;
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case 'Modified Fischer 1960':
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this.a = 6378155;
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this.eccSquared = 0.006693422;
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break;
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case 'South American 1969':
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this.a = 6378160;
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this.eccSquared = 0.006694542;
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break;
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case 'WGS 60':
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this.a = 6378165;
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this.eccSquared = 0.006693422;
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break;
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case 'WGS 66':
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this.a = 6378145;
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this.eccSquared = 0.006694542;
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break;
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case 'WGS 72':
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this.a = 6378135;
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this.eccSquared = 0.006694318;
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break;
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case 'ED50':
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this.a = 6378388;
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this.eccSquared = 0.00672267;
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break; // International Ellipsoid
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case 'WGS 84':
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case 'EUREF89': // Max deviation from WGS 84 is 40 cm/km see http://ocq.dk/euref89 (in danish)
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case 'ETRS89': // Same as EUREF89
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this.a = 6378137;
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this.eccSquared = 0.00669438;
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break;
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default:
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this.status = true;
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// new Error('No ecclipsoid data associated with unknown datum: '.name);
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}
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};
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method.toDegrees = function (rad) {
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return rad / Math.PI * 180;
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};
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method.toRadians = function (deg) {
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return deg * Math.PI / 180;
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};
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function precisionRound(number, precision) {
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var factor = Math.pow(10, precision);
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return Math.round(number * factor) / factor;
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}
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module.exports = UTMLatLng;
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+303
@@ -0,0 +1,303 @@
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var datumName = "WGS 84";
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var a;
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var eccSquared;
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var status = false;
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||||
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function UTMLatLng (datumNameIn){
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if (datumNameIn !== undefined)
|
||||
{
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datumName = datumNameIn;
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}
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this.setEllipsoid(datumName);
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}
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UTMLatLng.prototype.convertLatLngToUtm = function (latitude, longitude){
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if (this.status)
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||||
{
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||||
return 'No ecclipsoid data associated with unknown datum: ' + datumName;
|
||||
}
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||||
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latitude = parseFloat(latitude);
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longitude = parseFloat(longitude);
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var LongTemp = longitude;
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var LatRad = this.toRadians(latitude);
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var LongRad = this.toRadians(LongTemp);
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if (LongTemp >= 8 && LongTemp <= 13 && latitude > 54.5 && latitude < 58) {
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ZoneNumber = 32;
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} else if (latitude >= 56.0 && latitude < 64.0 && LongTemp >= 3.0 && LongTemp < 12.0) {
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ZoneNumber = 32;
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} else {
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ZoneNumber = ((LongTemp + 180) / 6) + 1;
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if (latitude >= 72.0 && latitude < 84.0) {
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if (LongTemp >= 0.0 && LongTemp < 9.0) {
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ZoneNumber = 31;
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} else if (LongTemp >= 9.0 && LongTemp < 21.0) {
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||||
ZoneNumber = 33;
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||||
} else if (LongTemp >= 21.0 && LongTemp < 33.0) {
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ZoneNumber = 35;
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||||
} else if (LongTemp >= 33.0 && LongTemp < 42.0) {
|
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ZoneNumber = 37;
|
||||
}
|
||||
}
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||||
}
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ZoneNumber = parseInt(ZoneNumber);
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var LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin in middle of zone
|
||||
var LongOriginRad = this.toRadians(LongOrigin);
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var UTMZone = this.getUtmLetterDesignator(latitude);
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||||
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var eccPrimeSquared = (this.eccSquared) / (1 - this.eccSquared);
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||||
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var N = this.a / Math.sqrt(1 - this.eccSquared * Math.sin(LatRad) * Math.sin(LatRad));
|
||||
var T = Math.tan(LatRad) * Math.tan(LatRad);
|
||||
var C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad);
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||||
var A = Math.cos(LatRad) * (LongRad - LongOriginRad);
|
||||
|
||||
var M = this.a * ((1 - this.eccSquared / 4 - 3 * this.eccSquared * this.eccSquared / 64 - 5 * this.eccSquared * this.eccSquared * this.eccSquared / 256) * LatRad
|
||||
- (3 * this.eccSquared / 8 + 3 * this.eccSquared * this.eccSquared / 32 + 45 * this.eccSquared * this.eccSquared * this.eccSquared / 1024) * Math.sin(2 * LatRad)
|
||||
+ (15 * this.eccSquared * this.eccSquared / 256 + 45 * this.eccSquared * this.eccSquared * this.eccSquared / 1024) * Math.sin(4 * LatRad)
|
||||
- (35 * this.eccSquared * this.eccSquared * this.eccSquared / 3072) * Math.sin(6 * LatRad));
|
||||
|
||||
var UTMEasting = parseFloat(0.9996 * N * (A + (1 - T + C) * A * A * A / 6
|
||||
+ (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120)
|
||||
+ 500000.0);
|
||||
|
||||
var UTMNorthing = parseFloat(0.9996 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24
|
||||
+ (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720)));
|
||||
|
||||
if (latitude < 0)
|
||||
UTMNorthing += 10000000.0;
|
||||
UTMNorthing = parseInt(Math.round(UTMNorthing));
|
||||
UTMEasting = parseInt(Math.round(UTMEasting));
|
||||
return {Easting: UTMEasting, Northing: UTMNorthing, ZoneNumber: parseInt(ZoneNumber), ZoneLetter: UTMZone};
|
||||
|
||||
|
||||
};
|
||||
|
||||
UTMLatLng.prototype.convertUtmToLatLng = function (UTMEasting, UTMNorthing, UTMZoneNumber, UTMZoneLetter){
|
||||
var e1 = (1 - Math.sqrt(1 - this.eccSquared)) / (1 + Math.sqrt(1 - this.eccSquared));
|
||||
var x = UTMEasting - 500000.0; //remove 500,000 meter offset for longitude
|
||||
var y = UTMNorthing;
|
||||
var ZoneNumber = UTMZoneNumber;
|
||||
var ZoneLetter = UTMZoneLetter;
|
||||
var NorthernHemisphere;
|
||||
if(UTMEasting===undefined)
|
||||
{
|
||||
return "Please pass the UTMEasting!";
|
||||
}
|
||||
if(UTMNorthing===undefined)
|
||||
{
|
||||
return "Please pass the UTMNorthing!";
|
||||
}
|
||||
if(UTMZoneNumber===undefined)
|
||||
{
|
||||
return "Please pass the UTMZoneNumber!";
|
||||
}
|
||||
if(UTMZoneLetter===undefined)
|
||||
{
|
||||
return "Please pass the UTMZoneLetter!";
|
||||
}
|
||||
|
||||
if ('N' === ZoneLetter) {
|
||||
NorthernHemisphere = 1;
|
||||
} else {
|
||||
NorthernHemisphere = 0;
|
||||
this.y -= 10000000.0;
|
||||
}
|
||||
|
||||
var LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3;
|
||||
|
||||
var eccPrimeSquared = (this.eccSquared) / (1 - this.eccSquared);
|
||||
|
||||
M = y / 0.9996;
|
||||
var mu = M / (this.a * (1 - this.eccSquared / 4 - 3 * this.eccSquared * this.eccSquared / 64 - 5 * this.eccSquared * this.eccSquared * this.eccSquared / 256));
|
||||
|
||||
var phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu)
|
||||
+ (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu)
|
||||
+ (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu);
|
||||
var phi1 = this.toDegrees(phi1Rad);
|
||||
|
||||
var N1 = this.a / Math.sqrt(1 - this.eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad));
|
||||
var T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad);
|
||||
var C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad);
|
||||
var R1 = this.a * (1 - this.eccSquared) / Math.pow(1 - this.eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5);
|
||||
var D = x / (N1 * 0.9996);
|
||||
|
||||
var Lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24
|
||||
+ (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720);
|
||||
Lat = this.toDegrees(Lat);
|
||||
|
||||
var Long = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1)
|
||||
* D * D * D * D * D / 120) / Math.cos(phi1Rad);
|
||||
Long = LongOrigin + this.toDegrees(Long);
|
||||
return {lat: Lat, lng: Long};
|
||||
};
|
||||
|
||||
UTMLatLng.prototype.getUtmLetterDesignator = function (latitude) {
|
||||
latitude = parseFloat(latitude);
|
||||
if ((84 >= latitude) && (latitude >= 72))
|
||||
return 'X';
|
||||
else if ((72 > latitude) && (latitude >= 64))
|
||||
return 'W';
|
||||
else if ((64 > latitude) && (latitude >= 56))
|
||||
return 'V';
|
||||
else if ((56 > latitude) && (latitude >= 48))
|
||||
return 'U';
|
||||
else if ((48 > latitude) && (latitude >= 40))
|
||||
return 'T';
|
||||
else if ((40 > latitude) && (latitude >= 32))
|
||||
return 'S';
|
||||
else if ((32 > latitude) && (latitude >= 24))
|
||||
return 'R';
|
||||
else if ((24 > latitude) && (latitude >= 16))
|
||||
return 'Q';
|
||||
else if ((16 > latitude) && (latitude >= 8))
|
||||
return 'P';
|
||||
else if ((8 > latitude) && (latitude >= 0))
|
||||
return 'N';
|
||||
else if ((0 > latitude) && (latitude >= -8))
|
||||
return 'M';
|
||||
else if ((-8 > latitude) && (latitude >= -16))
|
||||
return 'L';
|
||||
else if ((-16 > latitude) && (latitude >= -24))
|
||||
return 'K';
|
||||
else if ((-24 > latitude) && (latitude >= -32))
|
||||
return 'J';
|
||||
else if ((-32 > latitude) && (latitude >= -40))
|
||||
return 'H';
|
||||
else if ((-40 > latitude) && (latitude >= -48))
|
||||
return 'G';
|
||||
else if ((-48 > latitude) && (latitude >= -56))
|
||||
return 'F';
|
||||
else if ((-56 > latitude) && (latitude >= -64))
|
||||
return 'E';
|
||||
else if ((-64 > latitude) && (latitude >= -72))
|
||||
return 'D';
|
||||
else if ((-72 > latitude) && (latitude >= -80))
|
||||
return 'C';
|
||||
else
|
||||
return 'Z';
|
||||
|
||||
};
|
||||
|
||||
UTMLatLng.prototype.setEllipsoid = function (name){
|
||||
switch (name) {
|
||||
case 'Airy':
|
||||
this.a = 6377563;
|
||||
this.eccSquared = 0.00667054;
|
||||
break;
|
||||
case 'Australian National':
|
||||
this.a = 6378160;
|
||||
this.eccSquared = 0.006694542;
|
||||
break;
|
||||
case 'Bessel 1841':
|
||||
this.a = 6377397;
|
||||
this.eccSquared = 0.006674372;
|
||||
break;
|
||||
case 'Bessel 1841 Nambia':
|
||||
this.a = 6377484;
|
||||
this.eccSquared = 0.006674372;
|
||||
break;
|
||||
case 'Clarke 1866':
|
||||
this.a = 6378206;
|
||||
this.eccSquared = 0.006768658;
|
||||
break;
|
||||
case 'Clarke 1880':
|
||||
this.a = 6378249;
|
||||
this.eccSquared = 0.006803511;
|
||||
break;
|
||||
case 'Everest':
|
||||
this.a = 6377276;
|
||||
this.eccSquared = 0.006637847;
|
||||
break;
|
||||
case 'Fischer 1960 Mercury':
|
||||
this.a = 6378166;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'Fischer 1968':
|
||||
this.a = 6378150;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'GRS 1967':
|
||||
this.a = 6378160;
|
||||
this.eccSquared = 0.006694605;
|
||||
break;
|
||||
case 'GRS 1980':
|
||||
this.a = 6378137;
|
||||
this.eccSquared = 0.00669438;
|
||||
break;
|
||||
case 'Helmert 1906':
|
||||
this.a = 6378200;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'Hough':
|
||||
this.a = 6378270;
|
||||
this.eccSquared = 0.00672267;
|
||||
break;
|
||||
case 'International':
|
||||
this.a = 6378388;
|
||||
this.eccSquared = 0.00672267;
|
||||
break;
|
||||
case 'Krassovsky':
|
||||
this.a = 6378245;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'Modified Airy':
|
||||
this.a = 6377340;
|
||||
this.eccSquared = 0.00667054;
|
||||
break;
|
||||
case 'Modified Everest':
|
||||
this.a = 6377304;
|
||||
this.eccSquared = 0.006637847;
|
||||
break;
|
||||
case 'Modified Fischer 1960':
|
||||
this.a = 6378155;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'South American 1969':
|
||||
this.a = 6378160;
|
||||
this.eccSquared = 0.006694542;
|
||||
break;
|
||||
case 'WGS 60':
|
||||
this.a = 6378165;
|
||||
this.eccSquared = 0.006693422;
|
||||
break;
|
||||
case 'WGS 66':
|
||||
this.a = 6378145;
|
||||
this.eccSquared = 0.006694542;
|
||||
break;
|
||||
case 'WGS 72':
|
||||
this.a = 6378135;
|
||||
this.eccSquared = 0.006694318;
|
||||
break;
|
||||
case 'ED50':
|
||||
this.a = 6378388;
|
||||
this.eccSquared = 0.00672267;
|
||||
break; // International Ellipsoid
|
||||
case 'WGS 84':
|
||||
case 'EUREF89': // Max deviation from WGS 84 is 40 cm/km see http://ocq.dk/euref89 (in danish)
|
||||
case 'ETRS89': // Same as EUREF89
|
||||
this.a = 6378137;
|
||||
this.eccSquared = 0.00669438;
|
||||
break;
|
||||
default:
|
||||
this.status = true;
|
||||
// new Error('No ecclipsoid data associated with unknown datum: '.name);
|
||||
|
||||
}
|
||||
};
|
||||
|
||||
UTMLatLng.prototype.toDegrees = function (rad) {
|
||||
|
||||
return rad / Math.PI * 180;
|
||||
};
|
||||
|
||||
UTMLatLng.prototype.toRadians = function (deg) {
|
||||
|
||||
return deg * Math.PI / 180;
|
||||
};
|
||||
+58
@@ -0,0 +1,58 @@
|
||||
{
|
||||
"_from": "utm-latlng",
|
||||
"_id": "utm-latlng@1.0.5",
|
||||
"_inBundle": false,
|
||||
"_integrity": "sha1-rmBbTCLSapYVmoH2vLOSkyEj18I=",
|
||||
"_location": "/utm-latlng",
|
||||
"_phantomChildren": {},
|
||||
"_requested": {
|
||||
"type": "tag",
|
||||
"registry": true,
|
||||
"raw": "utm-latlng",
|
||||
"name": "utm-latlng",
|
||||
"escapedName": "utm-latlng",
|
||||
"rawSpec": "",
|
||||
"saveSpec": null,
|
||||
"fetchSpec": "latest"
|
||||
},
|
||||
"_requiredBy": [
|
||||
"#DEV:/",
|
||||
"#USER"
|
||||
],
|
||||
"_resolved": "https://registry.npmjs.org/utm-latlng/-/utm-latlng-1.0.5.tgz",
|
||||
"_shasum": "ae605b4c22d26a96159a81f6bcb392932123d7c2",
|
||||
"_spec": "utm-latlng",
|
||||
"_where": "/shd/CTC/TOOLS/TDS/TDS-source/Lts/Tools/ArAssetsV2",
|
||||
"author": {
|
||||
"name": "Shahid Iqbal",
|
||||
"email": "shahid.mca2010@gmail.com"
|
||||
},
|
||||
"bugs": {
|
||||
"url": "https://github.com/shahid28/utm-latlng.git/issues"
|
||||
},
|
||||
"bundleDependencies": false,
|
||||
"deprecated": false,
|
||||
"description": "LatLng to UTM converter vice versa",
|
||||
"homepage": "https://github.com/shahid28/utm-latlng#readme",
|
||||
"keywords": [
|
||||
"utm",
|
||||
"latlon",
|
||||
"latitude",
|
||||
"longitude",
|
||||
"convert",
|
||||
"wgs84",
|
||||
"geodesy",
|
||||
"ellipsoid",
|
||||
"coordinates"
|
||||
],
|
||||
"main": "UTMLatLng.js",
|
||||
"name": "utm-latlng",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "git+https://github.com/shahid28/utm-latlng.git"
|
||||
},
|
||||
"scripts": {
|
||||
"test": "echo \"Error: no test specified\" && exit 1"
|
||||
},
|
||||
"version": "1.0.5"
|
||||
}
|
||||
Reference in new issue
Block a user