blocks|key|1511531|text|基于一些example+code，我能够使用Geotools+2.4得到一些可以工作的东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1511532|double+utmZoneCenterLongitude+=+...++//+Center+lon+of+zone,+example:+zone+10+=+-123
int+zoneNumber+=+...+++++++++++++++++//+zone+number,+example:+10
double+latitude,+longitude+=+...+++++//+lat,+lon+in+degrees

MathTransformFactory+mtFactory+=+ReferencingFactoryFinder.getMathTransformFactory(null);
ReferencingFactoryContainer+factories+=+new+ReferencingFactoryContainer(null);

GeographicCRS+geoCRS+=+org.geotools.referencing.crs.DefaultGeographicCRS.WGS84;
CartesianCS+cartCS+=+org.geotools.referencing.cs.DefaultCartesianCS.GENERIC_2D;

ParameterValueGroup+parameters+=+mtFactory.getDefaultParameters("Transverse_Mercator");
parameters.parameter("central_meridian").setValue(utmZoneCenterLongitude);
parameters.parameter("latitude_of_origin").setValue(0.0);
parameters.parameter("scale_factor").setValue(0.9996);
parameters.parameter("false_easting").setValue(500000.0);
parameters.parameter("false_northing").setValue(0.0);

Map+properties+=+Collections.singletonMap("name",+"WGS+84+/+UTM+Zone+"+%2B+zoneNumber);
ProjectedCRS+projCRS+=+factories.createProjectedCRS(properties,+geoCRS,+null,+parameters,+cartCS);

MathTransform+transform+=+CRS.findMathTransform(geoCRS,+projCRS);

double[]+dest+=+new+double[2];
transform.transform(new+double[]+{longitude,+latitude},+0,+dest,+0,+1);

int+easting+=+(int)Math.round(dest[0]);
int+northing+=+(int)Math.round(dest[1]);|code-block|syntax|javascript|1511533|entityMap|0|LINK|mutability|MUTABLE|url|http://svn.geotools.org/trunk/demo/referencing/src/main/java/org/geotools/demo/referencing/CTSTutorial.java^0|4|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

I was able to use Geotools 2.4 to get something that works, based on some <a href="http://svn.geotools.org/trunk/demo/referencing/src/main/java/org/geotools/demo/referencing/CTSTutorial.java" rel="noreferrer">example code</a>.

<pre><code>double utmZoneCenterLongitude = ... // Center lon of zone, example: zone 10 = -123
int zoneNumber = ... // zone number, example: 10
double latitude, longitude = ... // lat, lon in degrees

MathTransformFactory mtFactory = ReferencingFactoryFinder.getMathTransformFactory(null);
ReferencingFactoryContainer factories = new ReferencingFactoryContainer(null);

GeographicCRS geoCRS = org.geotools.referencing.crs.DefaultGeographicCRS.WGS84;
CartesianCS cartCS = org.geotools.referencing.cs.DefaultCartesianCS.GENERIC_2D;

ParameterValueGroup parameters = mtFactory.getDefaultParameters("Transverse_Mercator");
parameters.parameter("central_meridian").setValue(utmZoneCenterLongitude);
parameters.parameter("latitude_of_origin").setValue(0.0);
parameters.parameter("scale_factor").setValue(0.9996);
parameters.parameter("false_easting").setValue(500000.0);
parameters.parameter("false_northing").setValue(0.0);

Map properties = Collections.singletonMap("name", "WGS 84 / UTM Zone " + zoneNumber);
ProjectedCRS projCRS = factories.createProjectedCRS(properties, geoCRS, null, parameters, cartCS);

MathTransform transform = CRS.findMathTransform(geoCRS, projCRS);

double[] dest = new double[2];
transform.transform(new double[] {longitude, latitude}, 0, dest, 0, 1);

int easting = (int)Math.round(dest[0]);
int northing = (int)Math.round(dest[1]);
</code></pre>

blocks|key|1726732|text|没有库，什么都没有。复制这个！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1726733|使用这两个类，您可以将度(纬度/经度)转换为UTM，反之亦然！|1726734|private+class+Deg2UTM
{
++++double+Easting;
++++double+Northing;
++++int+Zone;
++++char+Letter;
++++private++Deg2UTM(double+Lat,double+Lon)
++++{
++++++++Zone=+(int)+Math.floor(Lon/6%2B31);
++++++++if+(Lat<-72)+
++++++++++++Letter='C';
++++++++else+if+(Lat<-64)+
++++++++++++Letter='D';
++++++++else+if+(Lat<-56)
++++++++++++Letter='E';
++++++++else+if+(Lat<-48)
++++++++++++Letter='F';
++++++++else+if+(Lat<-40)
++++++++++++Letter='G';
++++++++else+if+(Lat<-32)
++++++++++++Letter='H';
++++++++else+if+(Lat<-24)
++++++++++++Letter='J';
++++++++else+if+(Lat<-16)
++++++++++++Letter='K';
++++++++else+if+(Lat<-8)+
++++++++++++Letter='L';
++++++++else+if+(Lat<0)
++++++++++++Letter='M';
++++++++else+if+(Lat<8)++
++++++++++++Letter='N';
++++++++else+if+(Lat<16)+
++++++++++++Letter='P';
++++++++else+if+(Lat<24)+
++++++++++++Letter='Q';
++++++++else+if+(Lat<32)+
++++++++++++Letter='R';
++++++++else+if+(Lat<40)+
++++++++++++Letter='S';
++++++++else+if+(Lat<48)+
++++++++++++Letter='T';
++++++++else+if+(Lat<56)+
++++++++++++Letter='U';
++++++++else+if+(Lat<64)+
++++++++++++Letter='V';
++++++++else+if+(Lat<72)+
++++++++++++Letter='W';
++++++++else
++++++++++++Letter='X';
++++++++Easting=0.5*Math.log((1%2BMath.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180))/(1-Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180)))*0.9996*6399593.62/Math.pow((1%2BMath.pow(0.0820944379,+2)*Math.pow(Math.cos(Lat*Math.PI/180),+2)),+0.5)*(1%2B+Math.pow(0.0820944379,2)/2*Math.pow((0.5*Math.log((1%2BMath.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180))/(1-Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180)))),2)*Math.pow(Math.cos(Lat*Math.PI/180),2)/3)%2B500000;
++++++++Easting=Math.round(Easting*100)*0.01;
++++++++Northing+=+(Math.atan(Math.tan(Lat*Math.PI/180)/Math.cos((Lon*Math.PI/180-(6*Zone+-183)*Math.PI/180)))-Lat*Math.PI/180)*0.9996*6399593.625/Math.sqrt(1%2B0.006739496742*Math.pow(Math.cos(Lat*Math.PI/180),2))*(1%2B0.006739496742/2*Math.pow(0.5*Math.log((1%2BMath.cos(Lat*Math.PI/180)*Math.sin((Lon*Math.PI/180-(6*Zone+-183)*Math.PI/180)))/(1-Math.cos(Lat*Math.PI/180)*Math.sin((Lon*Math.PI/180-(6*Zone+-183)*Math.PI/180)))),2)*Math.pow(Math.cos(Lat*Math.PI/180),2))%2B0.9996*6399593.625*(Lat*Math.PI/180-0.005054622556*(Lat*Math.PI/180%2BMath.sin(2*Lat*Math.PI/180)/2)%2B4.258201531e-05*(3*(Lat*Math.PI/180%2BMath.sin(2*Lat*Math.PI/180)/2)%2BMath.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2))/4-1.674057895e-07*(5*(3*(Lat*Math.PI/180%2BMath.sin(2*Lat*Math.PI/180)/2)%2BMath.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2))/4%2BMath.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2)*Math.pow(Math.cos(Lat*Math.PI/180),2))/3);
++++++++if+(Letter<'M')
++++++++++++Northing+=+Northing+%2B+10000000;
++++++++Northing=Math.round(Northing*100)*0.01;
++++}
}

private+class+UTM2Deg
{
++++double+latitude;
++++double+longitude;
++++private++UTM2Deg(String+UTM)
++++{
++++++++String[]+parts=UTM.split("+");
++++++++int+Zone=Integer.parseInt(parts[0]);
++++++++char+Letter=parts[1].toUpperCase(Locale.ENGLISH).charAt(0);
++++++++double+Easting=Double.parseDouble(parts[2]);
++++++++double+Northing=Double.parseDouble(parts[3]);+++++++++++
++++++++double+Hem;
++++++++if+(Letter>'M')
++++++++++++Hem='N';
++++++++else
++++++++++++Hem='S';++++++++++++
++++++++double+north;
++++++++if+(Hem+==+'S')
++++++++++++north+=+Northing+-+10000000;
++++++++else
++++++++++++north+=+Northing;
++++++++latitude+=+(north/6366197.724/0.9996%2B(1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)-0.006739496742*Math.sin(north/6366197.724/0.9996)*Math.cos(north/6366197.724/0.9996)*(Math.atan(Math.cos(Math.atan((+Math.exp((Easting+-+500000)+/+(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting+-+500000)+/+(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(+1+-++0.006739496742*Math.pow((Easting+-+500000)+/+(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996+)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))%2Bnorth/6366197.724/0.9996)))*Math.tan((north-0.9996*6399593.625*(north/6366197.724/0.9996+-+0.006739496742*3/4*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996+)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))%2Bnorth/6366197.724/0.9996))-north/6366197.724/0.9996)*3/2)*(Math.atan(Math.cos(Math.atan((Math.exp((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))%2Bnorth/6366197.724/0.9996)))*Math.tan((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))%2Bnorth/6366197.724/0.9996))-north/6366197.724/0.9996))*180/Math.PI;
++++++++latitude=Math.round(latitude*10000000);
++++++++latitude=latitude/10000000;
++++++++longitude+=Math.atan((Math.exp((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*(+north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*+north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996%2BMath.sin(2*north/6366197.724/0.9996)/2)%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4%2BMath.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))+/+(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1%2B0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))%2Bnorth/6366197.724/0.9996))*180/Math.PI%2BZone*6-183;
++++++++longitude=Math.round(longitude*10000000);
++++++++longitude=longitude/10000000;+++++++
++++}+++
}|code-block|syntax|javascript|1726735|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

No Library, No Nothing. Copy This!

Using These Two Classes , You can Convert Degree(latitude/longitude) to UTM and Vice Versa!

<pre><code>private class Deg2UTM
{
 double Easting;
 double Northing;
 int Zone;
 char Letter;
 private Deg2UTM(double Lat,double Lon)
 {
 Zone= (int) Math.floor(Lon/6+31);
 if (Lat&lt;-72) 
 Letter='C';
 else if (Lat&lt;-64) 
 Letter='D';
 else if (Lat&lt;-56)
 Letter='E';
 else if (Lat&lt;-48)
 Letter='F';
 else if (Lat&lt;-40)
 Letter='G';
 else if (Lat&lt;-32)
 Letter='H';
 else if (Lat&lt;-24)
 Letter='J';
 else if (Lat&lt;-16)
 Letter='K';
 else if (Lat&lt;-8) 
 Letter='L';
 else if (Lat&lt;0)
 Letter='M';
 else if (Lat&lt;8) 
 Letter='N';
 else if (Lat&lt;16) 
 Letter='P';
 else if (Lat&lt;24) 
 Letter='Q';
 else if (Lat&lt;32) 
 Letter='R';
 else if (Lat&lt;40) 
 Letter='S';
 else if (Lat&lt;48) 
 Letter='T';
 else if (Lat&lt;56) 
 Letter='U';
 else if (Lat&lt;64) 
 Letter='V';
 else if (Lat&lt;72) 
 Letter='W';
 else
 Letter='X';
 Easting=0.5*Math.log((1+Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180))/(1-Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180)))*0.9996*6399593.62/Math.pow((1+Math.pow(0.0820944379, 2)*Math.pow(Math.cos(Lat*Math.PI/180), 2)), 0.5)*(1+ Math.pow(0.0820944379,2)/2*Math.pow((0.5*Math.log((1+Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180))/(1-Math.cos(Lat*Math.PI/180)*Math.sin(Lon*Math.PI/180-(6*Zone-183)*Math.PI/180)))),2)*Math.pow(Math.cos(Lat*Math.PI/180),2)/3)+500000;
 Easting=Math.round(Easting*100)*0.01;
 Northing = (Math.atan(Math.tan(Lat*Math.PI/180)/Math.cos((Lon*Math.PI/180-(6*Zone -183)*Math.PI/180)))-Lat*Math.PI/180)*0.9996*6399593.625/Math.sqrt(1+0.006739496742*Math.pow(Math.cos(Lat*Math.PI/180),2))*(1+0.006739496742/2*Math.pow(0.5*Math.log((1+Math.cos(Lat*Math.PI/180)*Math.sin((Lon*Math.PI/180-(6*Zone -183)*Math.PI/180)))/(1-Math.cos(Lat*Math.PI/180)*Math.sin((Lon*Math.PI/180-(6*Zone -183)*Math.PI/180)))),2)*Math.pow(Math.cos(Lat*Math.PI/180),2))+0.9996*6399593.625*(Lat*Math.PI/180-0.005054622556*(Lat*Math.PI/180+Math.sin(2*Lat*Math.PI/180)/2)+4.258201531e-05*(3*(Lat*Math.PI/180+Math.sin(2*Lat*Math.PI/180)/2)+Math.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2))/4-1.674057895e-07*(5*(3*(Lat*Math.PI/180+Math.sin(2*Lat*Math.PI/180)/2)+Math.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2))/4+Math.sin(2*Lat*Math.PI/180)*Math.pow(Math.cos(Lat*Math.PI/180),2)*Math.pow(Math.cos(Lat*Math.PI/180),2))/3);
 if (Letter&lt;'M')
 Northing = Northing + 10000000;
 Northing=Math.round(Northing*100)*0.01;
 }
}

private class UTM2Deg
{
 double latitude;
 double longitude;
 private UTM2Deg(String UTM)
 {
 String[] parts=UTM.split(" ");
 int Zone=Integer.parseInt(parts[0]);
 char Letter=parts[1].toUpperCase(Locale.ENGLISH).charAt(0);
 double Easting=Double.parseDouble(parts[2]);
 double Northing=Double.parseDouble(parts[3]); 
 double Hem;
 if (Letter&gt;'M')
 Hem='N';
 else
 Hem='S'; 
 double north;
 if (Hem == 'S')
 north = Northing - 10000000;
 else
 north = Northing;
 latitude = (north/6366197.724/0.9996+(1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)-0.006739496742*Math.sin(north/6366197.724/0.9996)*Math.cos(north/6366197.724/0.9996)*(Math.atan(Math.cos(Math.atan(( Math.exp((Easting - 500000) / (0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting - 500000) / (0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*( 1 - 0.006739496742*Math.pow((Easting - 500000) / (0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996 )/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))+north/6366197.724/0.9996)))*Math.tan((north-0.9996*6399593.625*(north/6366197.724/0.9996 - 0.006739496742*3/4*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996 )*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))+north/6366197.724/0.9996))-north/6366197.724/0.9996)*3/2)*(Math.atan(Math.cos(Math.atan((Math.exp((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))+north/6366197.724/0.9996)))*Math.tan((north-0.9996*6399593.625*(north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3))/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))+north/6366197.724/0.9996))-north/6366197.724/0.9996))*180/Math.PI;
 latitude=Math.round(latitude*10000000);
 latitude=latitude/10000000;
 longitude =Math.atan((Math.exp((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3))-Math.exp(-(Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2)/3)))/2/Math.cos((north-0.9996*6399593.625*( north/6366197.724/0.9996-0.006739496742*3/4*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.pow(0.006739496742*3/4,2)*5/3*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2* north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4-Math.pow(0.006739496742*3/4,3)*35/27*(5*(3*(north/6366197.724/0.9996+Math.sin(2*north/6366197.724/0.9996)/2)+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/4+Math.sin(2*north/6366197.724/0.9996)*Math.pow(Math.cos(north/6366197.724/0.9996),2)*Math.pow(Math.cos(north/6366197.724/0.9996),2))/3)) / (0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2))))*(1-0.006739496742*Math.pow((Easting-500000)/(0.9996*6399593.625/Math.sqrt((1+0.006739496742*Math.pow(Math.cos(north/6366197.724/0.9996),2)))),2)/2*Math.pow(Math.cos(north/6366197.724/0.9996),2))+north/6366197.724/0.9996))*180/Math.PI+Zone*6-183;
 longitude=Math.round(longitude*10000000);
 longitude=longitude/10000000; 
 } 
}
</code></pre>

blocks|key|1511711|text|对于我的项目，我使用了来自Ahmed+Taha的库LatLongLib。我认为将坐标从UTM系统转换到纬度-经度系统非常容易，反之亦然。您只需要使用UTMUtils、UTMPoint和LatLonPoint类。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1511712|很久以前，我也考虑过选择Jcoord。这很简单，也很直截了当。但是，我需要使用WGS84椭球体，而且当时似乎只有LatLongLib具有该功能。|1511713|entityMap|0|LINK|mutability|MUTABLE|url|https://sites.google.com/site/ahmdalitaha2/latlonglib|1|http://www.jstott.me.uk/jcoord/^0|P|A|0|0|C|6|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

For my projects I've using the library <a href="https://sites.google.com/site/ahmdalitaha2/latlonglib" rel="nofollow">LatLongLib</a>, from Ahmed Taha. I think that it's very easy to convert coordinates from the UTM system to the Latitude-Longitude system and vice-versa. You just need to play with the classes UTMUtils, UTMPoint and LatLonPoint.

Time ago I also considered choosing <a href="http://www.jstott.me.uk/jcoord/" rel="nofollow">Jcoord</a>. It was easy and straight to the point too. However, I needed to use the WGS84 ellipsoid and, at that time, only LatLongLib seemed to have that feature.

blocks|key|1727033|text|您可以使用此项目https://github.com/Berico-Technologies/Geo-Coordinate-Conversion-Java/，使用jitpack将其添加到现有的pom.xml中。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1727034|我已经成功地将UTM坐标(+30+N，这里是30区域和北半球)转换为纬度和经度。下面是我的例子：|1727035|public+void+setPunto(Point+punto)+{
++++this.punto+=+punto;
++++LatLon+latlon+=+UTMCoord.locationFromUTMCoord(30,+AVKey.NORTH,+punto.getX(),+punto.getY());
++++this.latitud+=+latlon.getLatitude().degrees;
++++this.longitud+=+latlon.getLongitude().degrees;
}|code-block|syntax|javascript|1727036|请注意，Point类是com.vividsolutions.jts.geom.Point类类型。|1727037|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Berico-Technologies/Geo-Coordinate-Conversion-Java/^0|8|1Y|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You can use this project <a href="https://github.com/Berico-Technologies/Geo-Coordinate-Conversion-Java/" rel="nofollow">https://github.com/Berico-Technologies/Geo-Coordinate-Conversion-Java/</a>, adding it to your existing pom.xml using jitpack.

I've successfully been able to convert UTM coordinates (30N, this is, 30 zone and northern hemisphere) to Latitude and Longitude. See my example below:

<pre><code>public void setPunto(Point punto) {
 this.punto = punto;
 LatLon latlon = UTMCoord.locationFromUTMCoord(30, AVKey.NORTH, punto.getX(), punto.getY());
 this.latitud = latlon.getLatitude().degrees;
 this.longitud = latlon.getLongitude().degrees;
}
</code></pre>

Note that Point class is of com.vividsolutions.jts.geom.Point class type.

blocks|key|1727103|text|坐标的转换实际上只需几行代码即可完成：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1727104|Coordinate+coordinate+=+new+Coordinate(x,+y);
MathTransform+transform+=+CRS.findMathTransform(CRS.decode("EPSG:4326"),+CRS.decode("EPSG:3857"),+false);
JTS.transform(coordinate,+coordinate,+transform);+|code-block|syntax|javascript|1727105|这会将经度/纬度坐标(EPSG:4326)转换为Web墨卡托投影(EPSG:3857)坐标。|1727106|您只需要在您的构建工具(例如maven)中依赖以下两个GeoTools库：|1727107|<repositories>
++++<repository>
++++++++<id>osgeo</id>
++++++++<name>Open+Source+Geospatial+Foundation+Repository</name>
++++++++<url>http://download.osgeo.org/webdav/geotools/</url>
++++</repository>
</repositories>

<dependencies>
++++<dependency>
++++++++<groupId>org.geotools</groupId>
++++++++<artifactId>gt-api</artifactId>
++++++++<version>${geotools.version}</version>
++++</dependency>
++++<dependency>
++++++++<groupId>org.geotools</groupId>
++++++++<artifactId>gt-epsg-hsql</artifactId>
++++++++<version>${geotools.version}</version>
++++</dependency>
</dependencies>|1727108|这个答案建立在gis.stackexchange.com上的question/reply之上。我把我的回复贴上了，因为目前的答案看起来相当冗长。|offset|length|1727109|entityMap|0|LINK|mutability|MUTABLE|url|https://gis.stackexchange.com/questions/151565/what-simple-and-light-java-library-to-use-for-wgs84-to-utm-conversion^0|0|0|0|0|0|U|E|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

The transformation of a coordinate can actually be done in only a few lines of code:

<pre><code>Coordinate coordinate = new Coordinate(x, y);
MathTransform transform = CRS.findMathTransform(CRS.decode("EPSG:4326"), CRS.decode("EPSG:3857"), false);
JTS.transform(coordinate, coordinate, transform); 
</code></pre>

This will transform a longitude/latitude coordinate (EPSG:4326) into Web Mercator projection (EPSG:3857) coordinate.

You just need to depend on the following two GeoTools libraries in your build tool (e.g. maven):

<pre><code>&lt;repositories&gt;
 &lt;repository&gt;
 &lt;id&gt;osgeo&lt;/id&gt;
 &lt;name&gt;Open Source Geospatial Foundation Repository&lt;/name&gt;
 &lt;url&gt;http://download.osgeo.org/webdav/geotools/&lt;/url&gt;
 &lt;/repository&gt;
&lt;/repositories&gt;

&lt;dependencies&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.geotools&lt;/groupId&gt;
 &lt;artifactId&gt;gt-api&lt;/artifactId&gt;
 &lt;version&gt;${geotools.version}&lt;/version&gt;
 &lt;/dependency&gt;
 &lt;dependency&gt;
 &lt;groupId&gt;org.geotools&lt;/groupId&gt;
 &lt;artifactId&gt;gt-epsg-hsql&lt;/artifactId&gt;
 &lt;version&gt;${geotools.version}&lt;/version&gt;
 &lt;/dependency&gt;
&lt;/dependencies&gt;
</code></pre>

This answer builds on a <a href="https://gis.stackexchange.com/questions/151565/what-simple-and-light-java-library-to-use-for-wgs84-to-utm-conversion">question/reply</a> on gis.stackexchange.com. Posted my reply because the current answers here seem to be quite verbose.

Does anyone know of a way, in Java, to convert an earth surface position from lat, lon to UTM (say in WGS84)? I'm currently looking at Geotools but unfortunately the solution is not obvious.

Java, convert lat/lon to UTM

Java

有没有人知道，在Java语言中，有一种方法可以将地球表面位置从经度转换为UTM (比如在WGS84中)？我目前正在研究Geotools，但不幸的是，解决方案并不明显。

问Java，将经度/经度转换为UTM
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