java或者js代码进行像素转gps
时间: 2023-09-06 21:13:07 浏览: 150
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以下是Java实现的像素坐标和GPS坐标的转换示例代码:
```java
public class PixelToGps {
// 地图比例尺
private static final double SCALE = 50000;
// 地图原点经纬度
private static final double ORIGIN_LAT = 39.9087;
private static final double ORIGIN_LON = 116.3974;
// 地图旋转角度
private static final double ROTATION_ANGLE = 0;
// 将像素坐标转换为经纬度坐标
public static void pixelToGps(int x, int y) {
// 计算经度和纬度
double lon = ORIGIN_LON + x / SCALE;
double lat = ORIGIN_LAT + y / SCALE;
// 将经纬度坐标旋转
double rad = ROTATION_ANGLE * Math.PI / 180;
double cos = Math.cos(rad);
double sin = Math.sin(rad);
double x1 = (lon - ORIGIN_LON) * cos - (lat - ORIGIN_LAT) * sin + ORIGIN_LON;
double y1 = (lon - ORIGIN_LON) * sin + (lat - ORIGIN_LAT) * cos + ORIGIN_LAT;
// 输出结果
System.out.println("Pixel (" + x + ", " + y + ") -> GPS (" + y1 + ", " + x1 + ")");
}
public static void main(String[] args) {
// 测试像素坐标
int x = 100;
int y = 200;
// 转换为GPS坐标
pixelToGps(x, y);
}
}
```
这段代码中,我们定义了地图的比例尺、原点经纬度和旋转角度等参数,然后通过像素坐标计算出经纬度坐标,并将其旋转,最后输出转换结果。
如果要在JavaScript中实现像素坐标和GPS坐标的转换,可以参考以下示例代码:
```javascript
// 地图比例尺
const SCALE = 50000;
// 地图原点经纬度
const ORIGIN_LAT = 39.9087;
const ORIGIN_LON = 116.3974;
// 地图旋转角度
const ROTATION_ANGLE = 0;
// 将像素坐标转换为经纬度坐标
function pixelToGps(x, y) {
// 计算经度和纬度
let lon = ORIGIN_LON + x / SCALE;
let lat = ORIGIN_LAT + y / SCALE;
// 将经纬度坐标旋转
let rad = ROTATION_ANGLE * Math.PI / 180;
let cos = Math.cos(rad);
let sin = Math.sin(rad);
let x1 = (lon - ORIGIN_LON) * cos - (lat - ORIGIN_LAT) * sin + ORIGIN_LON;
let y1 = (lon - ORIGIN_LON) * sin + (lat - ORIGIN_LAT) * cos + ORIGIN_LAT;
// 输出结果
console.log(`Pixel (${x}, ${y}) -> GPS (${y1}, ${x1})`);
}
// 测试像素坐标
let x = 100;
let y = 200;
// 转换为GPS坐标
pixelToGps(x, y);
```
这段代码和Java代码类似,只是语法不同。
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