Sten Nordström a écrit :
> I encountered really strange behaviour from the geotools 2-2 library when
> using an UTM (transform zone 31 north). With assertions enabled, transforming
> a WGS84 geographical coordinate where the longitude is 0 throws the following
> exception:
>
> java.lang.AssertionError: The transform result may be 0.095 meters away from
> the expected position. Are you sure that the input coordinates are inside
> this map projection area of validity? The point is located 3°00.0'W away from
> the central meridian and 63°00.0'N away from the latitude of origin.
A UTM transform is valid only 3° on each side of the central meridian. If we go
to far away from the central meridian, the error become importants. This is
what
the assertion check. However I admit that throwing an exception for a 10
centimeters error on the edge may be a little bit too strict...
> The really strange thing is that changing the longitude to 0.01 or -0.01 will
> not generate any assertions.
This is string. It would be interresting to check if you get the same behavior
with Geotools 2.3 or yet better, the code on trunk...
Martin
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