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Each line in the jamesgeo population cross (JPC) splits the area’s population in half.

Here at jamesgeo.com we’re great believers in testing our code. So that the JPC can be placed at any angle, we must test it at all angles.

This is the integration test for the jamesgeo population cross (JPC) of Great Britain. I’ve displayed the map in the original coordinates (WGS84) so that you can see that the lines are straight.

20141224-gb_test_lines_wgs84_cropped

This is it in OSGB36, the UK’s national grid:

20141224-gb_test_lines_osgb36_cropped

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