Comments on: Using OpenStreetMap mapping for geocaching http://ammotin.com/2009/05/using-openstreetmap-mapping-for-geocaching/ Recreational mapping and GPS software for geocachers, for Linux, Mac and Windows Tue, 17 Aug 2010 18:11:29 +0100 http://wordpress.org/?v=2.8 hourly 1 By: Paul http://ammotin.com/2009/05/using-openstreetmap-mapping-for-geocaching/comment-page-1/#comment-7 Paul Mon, 18 May 2009 17:27:49 +0000 http://ammotin.com/?p=62#comment-7 Just to be clear, the sort of tiles I'm thinking of wouldn't be suitable for using directly under a regular map render. I'm thinking something like a 256x256 16bit grayscale image, with each pixel corresponding to a height (say +/- 32768 metres). Maybe with a secondary monochrome mask tile for the voids. There is a nicely cleaned up dataset out there, but it's not compatible with the OSM licence, so I'd like to kickstart making something that is. As for maintaining a map rendering, yes it's a challenge, but managing large datasets is my stock-in-trade :) Just to be clear, the sort of tiles I’m thinking of wouldn’t be suitable for using directly under a regular map render. I’m thinking something like a 256×256 16bit grayscale image, with each pixel corresponding to a height (say +/- 32768 metres). Maybe with a secondary monochrome mask tile for the voids.

There is a nicely cleaned up dataset out there, but it’s not compatible with the OSM licence, so I’d like to kickstart making something that is.

As for maintaining a map rendering, yes it’s a challenge, but managing large datasets is my stock-in-trade :)

]]> By: Edgemaster http://ammotin.com/2009/05/using-openstreetmap-mapping-for-geocaching/comment-page-1/#comment-6 Edgemaster Mon, 18 May 2009 15:56:51 +0000 http://ammotin.com/?p=62#comment-6 People from the OSM community have considered producing tiles that overlay over standard map tiles, indeed, this was the way that the cycle map originally intended to produce them (standard render with tweaks, then merge in contour tiles over it). If producing your own cartography, then good luck, but we aware that maintaining it all is a very big commitment to make - I've tried it myself in the past. People from the OSM community have considered producing tiles that overlay over standard map tiles, indeed, this was the way that the cycle map originally intended to produce them (standard render with tweaks, then merge in contour tiles over it).

If producing your own cartography, then good luck, but we aware that maintaining it all is a very big commitment to make – I’ve tried it myself in the past.

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