{"id":212,"date":"2009-06-30T21:02:53","date_gmt":"2009-06-30T21:02:53","guid":{"rendered":"http:\/\/ravtrack.com\/GPStracking\/?p=212"},"modified":"2019-04-01T16:08:40","modified_gmt":"2019-04-01T16:08:40","slug":"sources-of-map-images","status":"publish","type":"post","link":"https:\/\/ravtrack.com\/GPStracking\/sources-of-map-images\/","title":{"rendered":"Sources of Map Images"},"content":{"rendered":"<p>The following is a list of some on-line commercial sources of image files that are suitable for use\u00a0as map images.\u00a0<\/p>\n<h2><span style=\"color: #888888;\">www.unearthedoutdoors.net<\/span><\/h2>\n<p>UnearthedOutdoors resells image tiles measuring 2\u00b0 on a side (49,284km\u00b2 at the equator).\u00a0 True Marble\u2122 is available for purchase for latitudes between N84\u00b0 and S60\u00b0. The tiles are georeferenced in WGS84 Lat\/Lon projection for use in all modern GIS programs. The GeoTIFF format maintains compatibility with popular image processing programs such as Adobe Photoshop\u2122. Mercator projection and tiled JPEG format are also available. Other formats and projections are available on request.<br \/>\nwww.unearthedoutdoors.net\/global_data\/true_marble\/purchase.<\/p>\n<h2>WMS Global Mosaic GeoTIFF Download<\/h2>\n<p>This page contains links for a complete set of the raw image data contained in the WMS Global Mosaic, base resolution only. The files are grayscale geotiffs, with the proper geolocation tag information for integration in GIS. These gzip compressed geotiff files are very large, between 350 and 500 Megabytes each, and will decompress to 800MB tiffs, 28800&#215;28800 pixels, covering 4&#215;4 arc-degrees fo the panchromatic band and 8&#215;8 arc-degrees for the other bands.<br \/>\nwww.collections.sdsc.edu\/dac2\/telascience\/telascience_data\/onearth<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The following is a list of some on-line commercial sources of image files that are suitable for use\u00a0as map images.\u00a0 www.unearthedoutdoors.net UnearthedOutdoors resells image tiles measuring 2\u00b0 on a side (49,284km\u00b2 at the equator).\u00a0 True Marble\u2122 is available for purchase&hellip;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sources of Map Images - 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