GPS坐标互转:WGS-84(GPS)、GCJ-02(Google地图)、BD-09(百度地图)[转]
GCJ-02:中国坐标偏移标准,Google Map、高德、腾讯使用
BD-09:百度坐标偏移标准,Baidu Map使用
//WGS-84 to GCJ-02
GPS.gcj_encrypt();
//GCJ-02 to WGS-84 粗略
GPS.gcj_decrypt();
//GCJ-02 to WGS-84 精确(二分极限法)
// var threshold = 0.000000001; 目前设置的是精确到小数点后9位,这个值越小,越精确,但是javascript中,浮点运算本身就不太精确,九位在GPS里也偏差不大了
GSP.gcj_decrypt_exact();
//GCJ-02 to BD-09
GPS.bd_encrypt();
//BD-09 to GCJ-02
GPS.bd_decrypt();
//求距离
GPS.distance();
示例:
document.write("GPS: 39.933676862706776,116.35608315379092<br />");
var arr2 = GPS.gcj_encrypt(39.933676862706776, 116.35608315379092);
document.write("中国:" + arr2['lat']+","+arr2['lon']+'<br />');
var arr3 = GPS.gcj_decrypt_exact(arr2['lat'], arr2['lon']);
document.write('逆算:' + arr3['lat']+","+arr3['lon']+' 需要和第一行相似(目前是小数点后9位相等)');
1. [代码][JavaScript]代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
var GPS = { PI : 3.14159265358979324, x_pi : 3.14159265358979324 * 3000.0 / 180.0, delta : function (lat, lon) { // Krasovsky 1940 // // a = 6378245.0, 1/f = 298.3 // b = a * (1 - f) // ee = (a^2 - b^2) / a^2; var a = 6378245.0; // a: 卫星椭球坐标投影到平面地图坐标系的投影因子。 var ee = 0.00669342162296594323; // ee: 椭球的偏心率。 var dLat = this.transformLat(lon - 105.0, lat - 35.0); var dLon = this.transformLon(lon - 105.0, lat - 35.0); var radLat = lat / 180.0 * this.PI; var magic = Math.sin(radLat); magic = 1 - ee * magic * magic; var sqrtMagic = Math.sqrt(magic); dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * this.PI); dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * this.PI); return {'lat': dLat, 'lon': dLon}; }, //WGS-84 to GCJ-02 gcj_encrypt : function (wgsLat, wgsLon) { if (this.outOfChina(wgsLat, wgsLon)) return {'lat': wgsLat, 'lon': wgsLon}; var d = this.delta(wgsLat, wgsLon); return {'lat' : wgsLat + d.lat,'lon' : wgsLon + d.lon}; }, //GCJ-02 to WGS-84 gcj_decrypt : function (gcjLat, gcjLon) { if (this.outOfChina(gcjLat, gcjLon)) return {'lat': gcjLat, 'lon': gcjLon}; var d = this.delta(gcjLat, gcjLon); return {'lat': gcjLat - d.lat, 'lon': gcjLon - d.lon}; }, //GCJ-02 to WGS-84 exactly gcj_decrypt_exact : function (gcjLat, gcjLon) { var initDelta = 0.01; var threshold = 0.000000001; var dLat = initDelta, dLon = initDelta; var mLat = gcjLat - dLat, mLon = gcjLon - dLon; var pLat = gcjLat + dLat, pLon = gcjLon + dLon; var wgsLat, wgsLon, i = 0; while (1) { wgsLat = (mLat + pLat) / 2; wgsLon = (mLon + pLon) / 2; var tmp = this.gcj_encrypt(wgsLat, wgsLon) dLat = tmp.lat - gcjLat; dLon = tmp.lon - gcjLon; if ((Math.abs(dLat) < threshold) && (Math.abs(dLon) < threshold)) break; if (dLat > 0) pLat = wgsLat; else mLat = wgsLat; if (dLon > 0) pLon = wgsLon; else mLon = wgsLon; if (++i > 10000) break; } //console.log(i); return {'lat': wgsLat, 'lon': wgsLon}; }, //GCJ-02 to BD-09 bd_encrypt : function (gcjLat, gcjLon) { var x = gcjLon, y = gcjLat; var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * this.x_pi); var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * this.x_pi); bdLon = z * Math.cos(theta) + 0.0065; bdLat = z * Math.sin(theta) + 0.006; return {'lat' : bdLat,'lon' : bdLon}; }, //BD-09 to GCJ-02 bd_decrypt : function (bdLat, bdLon) { var x = bdLon - 0.0065, y = bdLat - 0.006; var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * this.x_pi); var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * this.x_pi); var gcjLon = z * Math.cos(theta); var gcjLat = z * Math.sin(theta); return {'lat' : gcjLat, 'lon' : gcjLon}; }, //WGS-84 to Web mercator //mercatorLat -> y mercatorLon -> x mercator_encrypt : function(wgsLat, wgsLon) { var x = wgsLon * 20037508.34 / 180.; var y = Math.log(Math.tan((90. + wgsLat) * this.PI / 360.)) / (this.PI / 180.); y = y * 20037508.34 / 180.; return {'lat' : y, 'lon' : x}; /* if ((Math.abs(wgsLon) > 180 || Math.abs(wgsLat) > 90)) return null; var x = 6378137.0 * wgsLon * 0.017453292519943295; var a = wgsLat * 0.017453292519943295; var y = 3189068.5 * Math.log((1.0 + Math.sin(a)) / (1.0 - Math.sin(a))); return {'lat' : y, 'lon' : x}; //*/ }, // Web mercator to WGS-84 // mercatorLat -> y mercatorLon -> x mercator_decrypt : function(mercatorLat, mercatorLon) { var x = mercatorLon / 20037508.34 * 180.; var y = mercatorLat / 20037508.34 * 180.; y = 180 / this.PI * (2 * Math.atan(Math.exp(y * this.PI / 180.)) - this.PI / 2); return {'lat' : y, 'lon' : x}; /* if (Math.abs(mercatorLon) < 180 && Math.abs(mercatorLat) < 90) return null; if ((Math.abs(mercatorLon) > 20037508.3427892) || (Math.abs(mercatorLat) > 20037508.3427892)) return null; var a = mercatorLon / 6378137.0 * 57.295779513082323; var x = a - (Math.floor(((a + 180.0) / 360.0)) * 360.0); var y = (1.5707963267948966 - (2.0 * Math.atan(Math.exp((-1.0 * mercatorLat) / 6378137.0)))) * 57.295779513082323; return {'lat' : y, 'lon' : x}; //*/ }, // two point's distance distance : function (latA, lonA, latB, lonB) { var earthR = 6371000.; var x = Math.cos(latA * this.PI / 180.) * Math.cos(latB * this.PI / 180.) * Math.cos((lonA - lonB) * this.PI / 180); var y = Math.sin(latA * this.PI / 180.) * Math.sin(latB * this.PI / 180.); var s = x + y; if (s > 1) s = 1; if (s < -1) s = -1; var alpha = Math.acos(s); var distance = alpha * earthR; return distance; }, outOfChina : function (lat, lon) { if (lon < 72.004 || lon > 137.8347) return true; if (lat < 0.8293 || lat > 55.8271) return true; return false; }, transformLat : function (x, y) { var ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x)); ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0; ret += (20.0 * Math.sin(y * this.PI) + 40.0 * Math.sin(y / 3.0 * this.PI)) * 2.0 / 3.0; ret += (160.0 * Math.sin(y / 12.0 * this.PI) + 320 * Math.sin(y * this.PI / 30.0)) * 2.0 / 3.0; return ret; }, transformLon : function (x, y) { var ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x)); ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0; ret += (20.0 * Math.sin(x * this.PI) + 40.0 * Math.sin(x / 3.0 * this.PI)) * 2.0 / 3.0; ret += (150.0 * Math.sin(x / 12.0 * this.PI) + 300.0 * Math.sin(x / 30.0 * this.PI)) * 2.0 / 3.0; return ret; }}; |
2. [代码][PHP]代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
<?phpclass GPS { private $PI = 3.14159265358979324; private $x_pi = 0; public function __construct() { $this->x_pi = 3.14159265358979324 * 3000.0 / 180.0; } //WGS-84 to GCJ-02 public function gcj_encrypt($wgsLat, $wgsLon) { if ($this->outOfChina($wgsLat, $wgsLon)) return array('lat' => $wgsLat, 'lon' => $wgsLon); $d = $this->delta($wgsLat, $wgsLon); return array('lat' => $wgsLat + $d['lat'],'lon' => $wgsLon + $d['lon']); } //GCJ-02 to WGS-84 public function gcj_decrypt($gcjLat, $gcjLon) { if ($this->outOfChina($gcjLat, $gcjLon)) return array('lat' => $gcjLat, 'lon' => $gcjLon); $d = $this->delta($gcjLat, $gcjLon); return array('lat' => $gcjLat - $d['lat'], 'lon' => $gcjLon - $d['lon']); } //GCJ-02 to WGS-84 exactly public function gcj_decrypt_exact($gcjLat, $gcjLon) { $initDelta = 0.01; $threshold = 0.000000001; $dLat = $initDelta; $dLon = $initDelta; $mLat = $gcjLat - $dLat; $mLon = $gcjLon - $dLon; $pLat = $gcjLat + $dLat; $pLon = $gcjLon + $dLon; $wgsLat = 0; $wgsLon = 0; $i = 0; while (TRUE) { $wgsLat = ($mLat + $pLat) / 2; $wgsLon = ($mLon + $pLon) / 2; $tmp = $this->gcj_encrypt($wgsLat, $wgsLon); $dLat = $tmp['lat'] - $gcjLat; $dLon = $tmp['lon'] - $gcjLon; if ((abs($dLat) < $threshold) && (abs($dLon) < $threshold)) break; if ($dLat > 0) $pLat = $wgsLat; else $mLat = $wgsLat; if ($dLon > 0) $pLon = $wgsLon; else $mLon = $wgsLon; if (++$i > 10000) break; } //console.log(i); return array('lat' => $wgsLat, 'lon'=> $wgsLon); } //GCJ-02 to BD-09 public function bd_encrypt($gcjLat, $gcjLon) { $x = $gcjLon; $y = $gcjLat; $z = sqrt($x * $x + $y * $y) + 0.00002 * sin($y * $this->x_pi); $theta = atan2($y, $x) + 0.000003 * cos($x * $this->x_pi); $bdLon = $z * cos($theta) + 0.0065; $bdLat = $z * sin($theta) + 0.006; return array('lat' => $bdLat,'lon' => $bdLon); } //BD-09 to GCJ-02 public function bd_decrypt($bdLat, $bdLon) { $x = $bdLon - 0.0065; $y = $bdLat - 0.006; $z = sqrt($x * $x + $y * $y) - 0.00002 * sin($y * $this->x_pi); $theta = atan2($y, $x) - 0.000003 * cos($x * $this->x_pi); $$gcjLon = $z * cos($theta); $gcjLat = $z * sin($theta); return array('lat' => $gcjLat, 'lon' => $gcjLon); } //WGS-84 to Web mercator //$mercatorLat -> y $mercatorLon -> x public function mercator_encrypt($wgsLat, $wgsLon) { $x = $wgsLon * 20037508.34 / 180.; $y = log(tan((90. + $wgsLat) * $this->PI / 360.)) / ($this->PI / 180.); $y = $y * 20037508.34 / 180.; return array('lat' => $y, 'lon' => $x); /* if ((abs($wgsLon) > 180 || abs($wgsLat) > 90)) return NULL; $x = 6378137.0 * $wgsLon * 0.017453292519943295; $a = $wgsLat * 0.017453292519943295; $y = 3189068.5 * log((1.0 + sin($a)) / (1.0 - sin($a))); return array('lat' => $y, 'lon' => $x); //*/ } // Web mercator to WGS-84 // $mercatorLat -> y $mercatorLon -> x public function mercator_decrypt($mercatorLat, $mercatorLon) { $x = $mercatorLon / 20037508.34 * 180.; $y = $mercatorLat / 20037508.34 * 180.; $y = 180 / $this->PI * (2 * atan(exp($y * $this->PI / 180.)) - $this->PI / 2); return array('lat' => $y, 'lon' => $x); /* if (abs($mercatorLon) < 180 && abs($mercatorLat) < 90) return NULL; if ((abs($mercatorLon) > 20037508.3427892) || (abs($mercatorLat) > 20037508.3427892)) return NULL; $a = $mercatorLon / 6378137.0 * 57.295779513082323; $x = $a - (floor((($a + 180.0) / 360.0)) * 360.0); $y = (1.5707963267948966 - (2.0 * atan(exp((-1.0 * $mercatorLat) / 6378137.0)))) * 57.295779513082323; return array('lat' => $y, 'lon' => $x); //*/ } // two point's distance public function distance($latA, $lonA, $latB, $lonB) { $earthR = 6371000.; $x = cos($latA * $this->PI / 180.) * cos($latB * $this->PI / 180.) * cos(($lonA - $lonB) * $this->PI / 180); $y = sin($latA * $this->PI / 180.) * sin($latB * $this->PI / 180.); $s = $x + $y; if ($s > 1) $s = 1; if ($s < -1) $s = -1; $alpha = acos($s); $distance = $alpha * $earthR; return $distance; } private function delta($lat, $lon) { // Krasovsky 1940 // // a = 6378245.0, 1/f = 298.3 // b = a * (1 - f) // ee = (a^2 - b^2) / a^2; $a = 6378245.0;// a: 卫星椭球坐标投影到平面地图坐标系的投影因子。 $ee = 0.00669342162296594323;// ee: 椭球的偏心率。 $dLat = $this->transformLat($lon - 105.0, $lat - 35.0); $dLon = $this->transformLon($lon - 105.0, $lat - 35.0); $radLat = $lat / 180.0 * $this->PI; $magic = sin($radLat); $magic = 1 - $ee * $magic * $magic; $sqrtMagic = sqrt($magic); $dLat = ($dLat * 180.0) / (($a * (1 - $ee)) / ($magic * $sqrtMagic) * $this->PI); $dLon = ($dLon * 180.0) / ($a / $sqrtMagic * cos($radLat) * $this->PI); return array('lat' => $dLat, 'lon' => $dLon); } private function outOfChina($lat, $lon) { if ($lon < 72.004 || $lon > 137.8347) return TRUE; if ($lat < 0.8293 || $lat > 55.8271) return TRUE; return FALSE; } private function transformLat($x, $y) { $ret = -100.0 + 2.0 * $x + 3.0 * $y + 0.2 * $y * $y + 0.1 * $x * $y + 0.2 * sqrt(abs($x)); $ret += (20.0 * sin(6.0 * $x * $this->PI) + 20.0 * sin(2.0 * $x * $this->PI)) * 2.0 / 3.0; $ret += (20.0 * sin($y * $this->PI) + 40.0 * sin($y / 3.0 * $this->PI)) * 2.0 / 3.0; $ret += (160.0 * sin($y / 12.0 * $this->PI) + 320 * sin($y * $this->PI / 30.0)) * 2.0 / 3.0; return $ret; } private function transformLon($x, $y) { $ret = 300.0 + $x + 2.0 * $y + 0.1 * $x * $x + 0.1 * $x * $y + 0.1 * sqrt(abs($x)); $ret += (20.0 * sin(6.0 * $x * $this->PI) + 20.0 * sin(2.0 * $x * $this->PI)) * 2.0 / 3.0; $ret += (20.0 * sin($x * $this->PI) + 40.0 * sin($x / 3.0 * $this->PI)) * 2.0 / 3.0; $ret += (150.0 * sin($x / 12.0 * $this->PI) + 300.0 * sin($x / 30.0 * $this->PI)) * 2.0 / 3.0; return $ret; }} |
3. [代码][JAVA]代码
public class CoordinatesUtils {
/**
* 百度经纬度转 Arcgis经纬度
*/
double PI = 3.14159265358979324;
double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
double gcjLat;
double gcjLon;
public String gcj_decrypt_exact(double gcjLat, double gcjLon) {
double initDelta = 0.01;
double threshold = 0.000000001;
double dLat = initDelta, dLon = initDelta;
double mLat = gcjLat - dLat, mLon = gcjLon - dLon;
double pLat = gcjLat + dLat, pLon = gcjLon + dLon;
double wgsLat, wgsLon, i = 0;
while (true) {
wgsLat = (mLat + pLat) / 2;
wgsLon = (mLon + pLon) / 2;
LocalLocation tmp = this.gcj_encrypt(wgsLat, wgsLon);
dLat = tmp.getLatitude() - gcjLat;
dLon = tmp.getLongitude() - gcjLon;
if ((Math.abs(dLat) < threshold) && (Math.abs(dLon) < threshold))
break;
if (dLat > 0)
pLat = wgsLat;
else
mLat = wgsLat;
if (dLon > 0)
pLon = wgsLon;
else
mLon = wgsLon;
if (++i > 10000)
break;
}
String locationStr="latitude="+wgsLat+",longitude="+wgsLon;
return locationStr;
}
public LocalLocation gcj_encrypt(double wgsLat, double wgsLon) {
LocalLocation mylocation=new LocalLocation();
if (this.outOfChina(wgsLat, wgsLon)) {
mylocation.setLatitude(wgsLat);
mylocation.setLongitude(wgsLon);
return mylocation;
} else {
mylocation = this.delta(wgsLat, wgsLon);
LocalLocation l = new LocalLocation();
l.setLatitude(wgsLat + mylocation.getLatitude());
l.setLongitude(wgsLon + mylocation.getLongitude());
return l;
}
}
public boolean outOfChina(double lat, double lon) {
if (lon < 72.004 || lon > 137.8347)
return true;
if (lat < 0.8293 || lat > 55.8271)
return true;
return false;
}
public LocalLocation delta(double lat, double lon) {
LocalLocation l = new LocalLocation();
// Krasovsky 1940
//
// a = 6378245.0, 1/f = 298.3
// b = a * (1 - f)
// ee = (a^2 - b^2) / a^2;
double a = 6378245.0; // a: 卫星椭球坐标投影到平面地图坐标系的投影因子。
double ee = 0.00669342162296594323; // ee: 椭球的偏心率。
double dLat = this.transformLat(lon - 105.0, lat - 35.0);
double dLon = this.transformLon(lon - 105.0, lat - 35.0);
double radLat = lat / 180.0 * this.PI;
double magic = Math.sin(radLat);
magic = 1 - ee * magic * magic;
double sqrtMagic = Math.sqrt(magic);
dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * this.PI);
dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * this.PI);
l.setLatitude(dLat);
l.setLongitude(dLon);
return l;
}
public double transformLat(double x, double y) {
double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(y * this.PI) + 40.0 * Math.sin(y / 3.0 * this.PI)) * 2.0 / 3.0;
ret += (160.0 * Math.sin(y / 12.0 * this.PI) + 320 * Math.sin(y * this.PI / 30.0)) * 2.0 / 3.0;
return ret;
}
public double transformLon(double x, double y) {
double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * this.PI) + 20.0 * Math.sin(2.0 * x * this.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(x * this.PI) + 40.0 * Math.sin(x / 3.0 * this.PI)) * 2.0 / 3.0;
ret += (150.0 * Math.sin(x / 12.0 * this.PI) + 300.0 * Math.sin(x / 30.0 * this.PI)) * 2.0 / 3.0;
return ret;
}
class LocalLocation{
private double latitude;
private double longitude;
public double getLatitude() {
return latitude;
}
public void setLatitude(double latitude) {
this.latitude = latitude;
}
public double getLongitude() {
return longitude;
}
public void setLongitude(double longitude) {
this.longitude = longitude;
}
}
}
转载地址:http://www.oschina.net/code/snippet_260395_39205
GPS坐标互转:WGS-84(GPS)、GCJ-02(Google地图)、BD-09(百度地图)[转]的更多相关文章
- GPS坐标互转:WGS-84(GPS)、GCJ-02(Google地图)、BD-09(百度地图)(转载)
WGS-84:是国际标准,GPS坐标(Google Earth使用.或者GPS模块)GCJ-02:中国坐标偏移标准,Google Map.高德.腾讯使用BD-09:百度坐标偏移标准,Baidu Map ...
- GPS坐标互转:WGS-84(GPS)、GCJ-02(Google地图)、BD-09(百度地图)
WGS-84:是国际标准,GPS坐标(Google Earth使用.或者GPS模块)GCJ-02:中国坐标偏移标准,Google Map.高德.腾讯使用BD-09:百度坐标偏移标准,Baidu Map ...
- 如何获取google地图、baidu百度地图的坐标
google:打开google地图-->查找目的地-->右键:此位置居中-->地址栏键入javascript:void(prompt('',gApplication.getMap() ...
- 百度地图坐标纠偏和转换工具和DLL
百度一直以来都是个即想装出一副拥抱互联网开放的样子,又为了短期商业利益封闭自己的公司,模仿谷歌地图,开放了自己的百度地图 API,为了防止别人盗用其数据和用户自由迁移,地图相比于火星坐标,又更加封闭, ...
- C#的百度地图开发(三)依据坐标获取位置、商圈及周边信息
原文:C#的百度地图开发(三)依据坐标获取位置.商圈及周边信息 我们得到了百度坐标,现在依据这一坐标来获取相应的信息.下面是相应的代码 public class BaiduMap { /// < ...
- 用户Ip地址和百度地图api接口获取用户地理位置(经纬度坐标,城市)
<?php //获取用户ip(外网ip 服务器上可以获取用户外网Ip 本机ip地址只能获取127.0.0.1) function getip(){ if(!empty($_SERVE ...
- BD09坐标(百度坐标) WGS84(GPS坐标) GCJ02(国测局坐标) 的相互转换
BD09坐标(百度坐标) WGS84(GPS坐标) GCJ02(国测局坐标) 的相互转换 http://www.cnphp6.com/archives/24822 by root ⋅ Leave a ...
- 大批量GPS坐标转百度坐标
一. 百度地图API大批量转换时有数量限制,一个一个转. 用到的方法接口 /** 源坐标 格式:经度,纬度;经度,纬度… 最多支持100个; 源坐标类型:默认为1,即GPS ...
- GPS定位为什么要转换处理?高德地图和百度地图坐标处理有什么不一样?
GPS定位为什么要转换处理?高德地图和百度地图坐标处理有什么不一样? 先了解一下 高德地图 采用: GCJ-02 (不可逆) 百度百科: http://baike.baidu.com/link?url ...
随机推荐
- effective c++ 条款6 如果不想要就要告诉大家
这个条款应该和第五个放在一起 编译器默认生成 1 无参构造函数, 2 析构函数 3 拷贝构造函数 4 赋值预算符 当我们不需要,就要显示的告诉大家我们不需要. 方法:自己声明这个函数为private, ...
- MSSQL连接字符串,你真的清楚吗?
原文:MSSQL连接字符串,你真的清楚吗? 几年前当我第一次面试时,考官发现我是个新手于是他让我写个连接字符串,虽然当时就知道X种连接字符串的写法,但是当时却没能写对一个,工作多年后我仍然不能写一个正 ...
- ZOJ Problem Set - 2563 Long Dominoes 【如压力dp】
称号:ZOJ Problem Set - 2563 Long Dominoes 题意:给出1*3的小矩形.求覆盖m*n的矩阵的最多的不同的方法数? 分析:有一道题目是1 * 2的.比較火.链接:这里 ...
- 在JBuilder8在使用ANT
在JBuilder8中使用ANT 作者:翁驰原 在JBuilder8中.Ap ...
- 2014百度之星资格赛——Disk Schedule
2014百度拥有明星格比赛--Disk Schedule Problem Description 有非常多从磁盘读取数据的需求,包含顺序读取.随机读取. 为了提高效率.须要人为安排磁盘读取. 然而.在 ...
- HDU更多的学校比赛9场 HDU 4965Fast Matrix Calculation【矩阵运算+数学技巧】
困难,.,真,,,不是太困难 的问题是,有一个矩阵运算优化 您有权发言权N*K矩阵A给K*N矩阵B(1<=N<=1000 && 1=<K<=6).他们拿起了第一 ...
- 第三篇——第二部分——第一文 SQL Server镜像简介
原文:第三篇--第二部分--第一文 SQL Server镜像简介 原文出处:http://blog.csdn.net/dba_huangzj/article/details/26951563 镜像是什 ...
- kettle 4.4源代码分析Transformation
1.1. 相关的类和接口 1.1.1. JobEntryTrans 实现了JobEntryInterface的execute()方法,被job运行.由JobEntryTrans实例化Trans,并运行 ...
- SQL优化策略高级优化经常使用-1(The Return Of The King)
1 经常使用的优化策略 1.1 语句 1.1.1使用实际的列名 当我们查询SQL语句时.你是否觉得使用实际的列名比使用*更快呢?答案是肯定的. 为了证实这一点,感兴趣的朋友能够自己验证一下.我这 ...
- 佛祖保佑,从来没有Bug
<span style="font-size:14px;">// _ooOoo_ // o8888888o // 88" . "88 // (| - ...