On Sun, Mar 29, 2015 at 2:39 PM, Peter Borissow <peter.boris...@yahoo.com>
wrote:
> I have attached a first cut of the CylindricalEqualArea projection.
>
>
> You will need to add 2 lines to the
> org.geotools.referencing.operation.MathTransformProvider for it to work:
>
> org.geotools.referencing.operation.projection.CylindricalEqualArea$Provider
>
> org.geotools.referencing.operation.projection.CylindricalEqualArea$BehrmannProvider
>
Hi Peter,
normally we ask for a pull request to be made, could you create one?
There are instructions here:
http://docs.geotools.org/latest/developer/procedures/contribute.html#code-contributions
>
>
> I don't know how to test it.
>
You have to write a script test, see the two commits I've linked for
examples.
It's basically just getting some reference results from cs2cs and build the
script file that contains them, with tolerances.
> Visually it looks ok. I used the following code which generated a map that
> looks a lot like this:
> http://mathworld.wolfram.com/BehrmannCylindricalEqual-AreaProjection.html
>
> CoordinateReferenceSystem crs = CRS.decode("EPSG:54017");
> MapContent map = new MapContent();
> MapViewport vp = map.getViewport();
> vp.setCoordinateReferenceSystem(crs);
> map.addLayer(getPoliticalBoundaries());
> map.addLayer(getGraticules());
>
>
>
> I used code from Proj4j[1] which is almost identical to Proj4[2].
>
> The only thing I'm not sure about is the "trueScaleLatitude" variable in
> the constructor. In proj4, this maps to "tlat_ts". I have no idea what
> the equivalent is in GeoTools.
>
I don't know what that is either.
Cheers
Andrea
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