根据我的阅读，这需要一些我不擅长的复杂数学。所以，我在这里问。
有没有人有将 MKMapPoint 或 CLLocationCoordinate2D 转换为 UTM 值的经验？我找到了这个资源（http://www.uwgb.edu/dutchs/usefuldata/UTMFormulas.HTM），但数学是压倒性的。
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6
我最近为此写了一个类，并在 GitHub 上发布了一个示例项目
您想要的部分是一个名为 UTMConverter.m 的文件。它具有从纬度/经度转换为 UTM 的方法，反之亦然。
于 2012-07-09T15:07:40.520 回答
2
您可以使用一个库来做到这一点，或者分析一个库的代码来理解算法并自己做。
这是一个可以完成这项工作的 c++ 库：http: //geographiclib.sourceforge.net/html/
http://geographiclib.sourceforge.net/html/classGeographicLib_1_1UTMUPS.html
我找到了这个网站（http://home.hiwaay.net/~taylorc/toolbox/geography/geoutm.html）。如果你看源代码，整个转换是使用 JavaScript 完成的，你可以看看它并尝试转换为 Obj-c。
于 2010-11-18T23:15:22.813 回答
1
MKMapViewZoom appears to have some class methods which can convert between flat-map (geometric) & curved-map (geographic) coordinates, though I haven't tested them out. Somebody give me a thumbs up if this actually works
//convert from WGS84 (geographic coordinates) to UTM (geometric coordinates)
+ (double)longitudeToPixelSpaceX(double)pixelX
+ (double)latitudeToPixelSpaceY(double)pixelY
//convert from UTM to WGS84
+ (double)pixelSpaceXToLongitude(double)longitude
+ (double)pixelSpaceYToLatitude(double)latitude
some documentation here
- Objective C: https://github.com/jdp-global/MKMapViewZoom/blob/master/MKMapView%2BZoomLevel.m
- for RubyMotion: http://rubydoc.info/gems/map-kit-wrapper/0.0.5/frames
UPDATE:
This is maddening, but in order to get this class's source code to work accurately I basically had to extract the methods into my own domain essentially, then remove the parts of the code referencing MERCATOR_OFFSET & change MERCATOR_RADIUS to the meters value of the Earth's radius. I was kind of, ok, very surprised when I discovered this actually worked.
于 2014-02-23T19:43:24.247 回答