Question

我对我的房屋有最强的印象,并且知道左上层的ix子,即现在的0,如何获得其他食谱的纬度长度值?

虽然大毛派有:

function longToX(longitudeDegrees)
  {
    var longitude =degreesToRadians(longitudeDegrees);
    return (radius * longitude);
  }

  function latToY(latitudeDegrees)
  {
    var latitude =degreesToRadians(latitudeDegrees);
    var newy = radius/2.0 * 
            Math.log( (1.0 + Math.sin(latitude)) /
                      (1.0 - Math.sin(latitude)) );
    return newy;
  }

 function xToLong(xx)
  {
    var longRadians = xx/radius;
    var longDegrees = radiansToDegrees(longRadians);

    /* The user could have panned around the world a lot of times.
    Lat long goes from -180 to 180.  So every time a user gets 
    to 181 we want to subtract 360 degrees.  Every time a user
    gets to -181 we want to add 360 degrees. */

    var rotations = Math.floor((longDegrees + 180)/360)
    var longitude = longDegrees - (rotations * 360)
    return longitude;
  }

  function yToLat(yo)
  {
    var latitude =  (Math.PI/2) - 
                    (2 * Math.atan(
                       Math.exp(-1.0 * yo / radius)));
    return radiansToDegrees(latitude);
  }

radius = 6371 km radius of earth.. but however if i pass 0,0 i get 0,0 how to fix latitude longitude for 0,0 and derive from it other values

Answer 1

你们需要了解餐厅之间的距离。为了将距离改为学位,你可以使用以下事实:一分钟(学位1/60)自由度为1 852米或约6076英尺。赤道省的情况相同,但你需要乘以其他地方的纬线。

1级纬度 = 1852米

1度长=1852米

(你可能需要将纬度乘以皮/180,以将其转化为rad。)

友情链接