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I'm looking for a source that describes how the Robinson projection is calculated. I'm going to use this for converting long/lat into Robinson coordinates in both R and in javascript.

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2… – whuber Sep 11 '12 at 14:56
@whuber Thanks, this seems to be the answer to my question – celt-Ail Sep 17 '12 at 8:01

if you are looking for description of Robinson here it is: and algorithm in JS you can download from here: and script descrition is here:

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You can use proj4 library which is present in R. I haven't used it before so you have to find out how to parse the options.

You can project coords in the Robinson transformation with proj4 like this:

$ proj +proj=robin +lon_0=90w
  10 45
  846701.55      4805073.65
  45d15n 71d07w
  3031002.67    -7374243.09

you can find more information for more options and other projections and as well how to read and project files with coordinates in the manual

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