http://kelsocartography.com/blog/?p=339 Blogging at KelsoCartography.com Sat, 11 Aug 2012 01:39:37 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://kelsocartography.com/blog/?p=339&cpage=1#comment-2181 nathaniel Wed, 02 Jul 2008 18:11:21 +0000 http://kelsocartography.com/blog/?p=339#comment-2181 The source data is available free in raster format. I do not know of a free source of derived contours. If you have a GIS system at your disposal there are several easy ways to generate the contours from the raster source.

]]> http://kelsocartography.com/blog/?p=339&cpage=1#comment-2180 Bryan Wed, 02 Jul 2008 17:43:09 +0000 http://kelsocartography.com/blog/?p=339#comment-2180 Do you suppose the contours are available as vector files, complete with elevation attributes? Perhaps shapefiles or ArcInfo coverages?

]]> http://kelsocartography.com/blog/?p=339&cpage=1#comment-1448 kelsonv Fri, 16 May 2008 18:47:20 +0000 http://kelsocartography.com/blog/?p=339#comment-1448 My guess is SRTM90 worldwide and a mix of SRTM30 and DEM10 and DEM30 for the USA. ESRI has recently made a processed version of SRTM90 available via their world data disk but they are available free online a variety of places (just google it) and elsewhere.

]]> http://kelsocartography.com/blog/?p=339&cpage=1#comment-1446 Bryan Fri, 16 May 2008 16:57:58 +0000 http://kelsocartography.com/blog/?p=339#comment-1446 What digital data source did the contour data come from? I cannot find the answer to this anywhere!

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