Downloads Data themes are available in three levels of detail. For each scale, themes are listed on Cultural, Physical, and Raster category pages. Stay up to date! Know when a new version of Natural Earth is released by subscribing to our announcement list. Overwhelmed? The Natural Earth quick start kit (219 mb) provides a small sample of Natural Earth themes styled in in a QGIS document. Natural Earth is the creation of many volunteers and is supported by NACIS. Large scale data, 1:10m Cultural Physical Raster The most detailed. 1:10,000,000 1″ = 158 miles 1 cm = 100 km Medium scale data, 1:50m Cultural Physical Raster Suitable for making zoomed-out maps of countries and regions. 1:50,000,000 1″ = 790 miles 1 cm = 500 km Small scale data, 1:110m Cultural Physical Suitable for schematic maps of the world on a postcard or as a small locator globe.
Free GIS Datasets - Categorised List Are you tired of ho-hum cartography advice? In the Air ImagePlot visualization software: explore patterns in large image collections What is ImagePlot? ImagePlot is a free software tool that visualizes collections of images and video of any size. It is implemented as a macro which works with the open source image processing program ImageJ. ImagePlot was developed by the Software Studies Initiative with support from the National Endowment for Humanities (NEH), the California Institute for Telecommunications and Information Technology (Calit2), and the Center for Research in Computing and the Arts (CRCA). See your whole image collection in a single visualization. Existing visualization tools show data as points, lines, and bars. Better understand media collections and make new discoveries. Visualize image collections as timelines and scatter plots which display all images in a collection. Visualize change. We include macros which automatically measure various visual properties of every image in collection (or every frame in a video). Visualize image collections of any size. From a few dozens to millions of images.