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Jan 2, 2012 · Looking at Imus’ big, richly detailed map offers a holistic sense of what America looks like—how cities spread out along rivers, forests give way to plains, and mountains zigzag next to valleys.
Apr 6, 2015 · Note that an "equidistant" projection typically gives accurate distances only to one (or sometimes two or three) fixed points on the map. Other projections may have relevant properties not shared by these, such as being cylindrical, minimizing the grid convergence, etc.
Feb 17, 2015 · 70 maps that explain America. by Max Fisher and Dylan Matthews. Updated Jul 1, 2015, 8:01 AM PDT. Shutterstock. The United States of America is many things. It is the world’s most powerful...
Mar 2, 2015 · From the prevalence of meth labs to the real size of Alaska, these fascinating maps truly explain the United States of America.
- Determine What Projection Your Source Map Is in
- Find The SRID of Your Target Projection
- Convert The Shapefile to The New Projection
- Save Your New Map with A Useful Filename
This will vary with what kind of spatial file you’re using, but we’re assuming shapefile. A shapefile actually is a folder containing several files. There are sometimes more, but shapefiles almost always have a .shp, a .dbf and a .prj file. As you might have guessed, the projection information is in the .prj file. Here’s a .prj file from a Californ...
There are a few ways you might find the SRID of the new projection you want. If you found the projection on a government mapping site, the site might list the EPSG IDof the projection. If you’re not lucky enough to have an SRID in hand, your next best friend is a search engine and spatialreference.org. For example, if you need to look up the Google...
In Quantum GIS, this is as easy as right-clicking the layer you want to project, choose Save As, then choose Browse next to CRS (that stands for coordinate reference system), and search by EPSG.
This seems like a minor point, but I have maybe 10 identical shapefiles of the California state border in different projections. Do yourself a favor and include the SRIDin the filename (e.g. california_border_4326.shp).
1. Detailed Map of USA. This is like a blueprint map of the United States with a plain and simple white background. It shows major interstate highways, cities, and capitals for all 50 states. Another key benefit to this United States map is how it includes major lakes, rivers, and mountains.
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These essential features of a map are found on almost every map around us. They are- title, direction, legend(symbols), north areas, distance(scale), labels, grids and index, citation – which make it easier for people like us to understand the basic components of maps.
