GPS坐标到像素 [英] GPS coordinates to pixel
问题描述
我需要从GPS坐标中创建图像(多边形)。我有这样的坐标:
(49.274633220,17.160206083),(49.276968797,17.162732143),(49.278188519,17.162391767),(49.279761626,17.161087954 ),......
我需要将它们转换为XY像素点。每一对坐标都是创建的多边形的顶点。
具有所有坐标的文件:
GPS.txt
以及创建的多边形的外观如:
任何想法如何转换坐标?在所有情况下,你需要一个变换形式lat,lon(spherical)to cartesian(x,y) )协调。
如果多边形不大于100km,则可以使用简单的圆柱等距投影。
否则,您可以使用墨卡托投影。 (谷歌地图也使用它)
I need to create image (polygon) from GPS coordinates. I have coordinates like this:
(49.274633220,17.160206083),(49.276968797,17.162732143),(49.278188519,17.162391767),(49.279761626,17.161087954), ......
And I need to transform them to XY pixel points. Each pair of coordinates are vertex of created polygon.
File with all coordinates:
GPS.txt
and how the created polygon should look like:
Any idea how can I transform the coordinates? Thanks for all reply.
In all cases you need a transformation form lat,lon (spherical) to cartesian (x,y) coordinated. If the polygon is not bigger than 100km you can use a simple Cyclindrical Equidistant Projection. Otherwise, you may use a Mercator Projection. (Google Maps uses that too)
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