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Java Applet for Map Projections
posted by Satri
on Friday March 24, @01:33PM
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from the as-fast-as-you-can-click dept.
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Henry wrote to me: "Henry Bottomley's Java applet for world map projections allows a quick real-time view of the distorting effects of 15 different projections as well as altering the center and orientation of the map. It has just been extended to do the same for the Moon, Mars and even Jupiter." The java code is also available on the website.
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belg4mit writes "A list apart has an interesting tutorial on DHTML alternatives to Flash/Java for some simple interactive maps. The results are lighter weight and more accessible for search engines and screen readers. Cargo-cult away!"
NASA's Global Map Projector 2 comments
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The Map Room links to the free NASA Global Map Projector software. From the website: "G.Projector is a Java application which allows you to explore a large collection of global map projections and project an input GIF, JPG or PNG equirectangular map image. Lon-lat gridlines and continental outlines may be drawn, and resulting map images may be saved to disk in GIF, PDF, PNG or PS form." The Map Room also links to an exhaustive gallery of map projections. See related stories below for an online java projection tool.
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Kurt's Weblog links to the Spatial References website, which lists projections information in various formats. In addition to seeing existing EPSG codes, users can submit their own projections. Information for projections are translated in GML, Proj4, ESRI WKT, OGC WKT, USGS and JSON. Comments about the projections can also be shared. See also related stories below.
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Not really news but still interesting, the Terra ETL blog has a nice general entry on the Robinson map projection. From the blog: "This projection can be classified as a pseudo-cylindrical projection because of its straight parallels, along each of which the meridians are spaced evenly. [...] Robinson, was essentially contracted to develop a map projection that did not maintain angle, direction, or limit distortion, but was sanctioned to produce a map projection that "looked good" for books and atlases."
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