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如何在JPG地图上叠加经度和纬度标记?

[英]How to overlay Longitude & latitude markers on JPG map?

I need to be able to show markers (polygons) on a few maps that are JPG's that are various zoom level looks at same thing. 我需要能够在几张不同缩放级别的JPG地图上显示标记(多边形)。

I would normally use google maps for this, but I cannot rely on the mobile device having access to the internet when needed, thus need to use a locally stored set of JPG's and overlay the items on it, preferably with some sort of interaction such as click/touch for more detail popup/modal. 我通常会为此使用google maps,但是我不能依赖移动设备在需要时可以访问互联网 ,因此需要使用本地存储的JPG集并将其覆盖在项目上,最好进行某种交互,例如单击/触摸以获取更多详细信息。

Has anybody made anything similar to this that uses the GEO location but not the internet of a mobile device, and locally stored long/lat details? 是否有人使用GEO位置而不是使用移动设备的互联网以及本地存储的长/纬度详细信息进行了类似的操作? Can you give me any pointers? 你能给我指点吗?

使用CATiledLayer显示和叠加标记。 这里是一个不错的教程

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