谷歌地图数据集的简介

     谷歌地图中的1000多张图片。包含了卫星图像和对应的地图，大小为246MB。

谷歌地图数据集的安装

百度云盘文件已丢失……

国外地址链接：

https://medium.com/@olivercameron/20-weird-wonderful-datasets-for-machine-learning-c70fc89b73d5

https://research.googleblog.com/2016/11/open-source-visualization-of-gps.html

谷歌地图数据集的使用方法

更新……

1、javascript的实现（包含编码以及经纬度）

function GetQuadtreeAddress(long, lat)

{

var PI = 3.1415926535897;

var digits = 18; // how many digits precision

// now convert to normalized square coordinates

// use standard equations to map into mercator projection

var x = (180.0 + parseFloat(long)) / 360.0;

var y = -parseFloat(lat) * PI / 180; // convert to radians

y = 0.5 * Math.log((1+Math.sin(y)) / (1 - Math.sin(y)));

y *= 1.0/(2 * PI); // scale factor from radians to normalized

y += 0.5; // and make y range from 0 - 1

var quad = "t"; // google addresses start with t

var lookup = "qrts"; // tl tr bl br

while (digits–) // (post-decrement)

{

// make sure we only look at fractional part

x -= Math.floor(x);

y -= Math.floor(y);

quad = quad + lookup.substr((x >= 0.5 ? 1 : 0) + (y >= 0.5 ? 2 : 0), 1);

// now descend into that square

x *= 2;

y *= 2;

}

return quad;

}