On Wed, Mar 9, 2011 at 8:53 PM, Peter Borissow <[email protected]>wrote:
> Hmm... I would have thought that the Google projection, like most mercator
> projections, would have had warped features a little differently. For
> example, Greenland would look radically different on a Mercator projection
> than a WGS84 "projection". Maybe I should try a different "world" projection
> to test whether the reprojection is working? I tried a Robinson and
> Mollweide projection but they seem to be unsupported (I can create an
> envelope but the coverage transformation is bombing out). Anyone know of
> another global projection I can test with? Just need an EPSG code to see if
> the coverage transformation is working.
>
The Mercator does that, but the reprojection code does not unecessarily
change the image, in that case it just changes the world to image
transformation, it's not adding pixels.
In fact the code will always generate in image with the same number of
pixels as the original one, it will change the pixel values as needed and
change the grid to world
transformation accordingly.
Mollweide and Eckert IV are supported in the latest source builds from
trunk, but they are not available on 2.6.x.
However Robinson is available since 2.6.3, though it does not have any
associated EPSG code (the EPSG database
hardly has any atlas worthy projection in, Mollweide, Eckert VI and Winkel
Tripel are also supported by GeoTools
trunk but don't have a EPSG code)
Cheers
Andrea
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