You also reported this problem on the geotools list; thus far we are
all seeing the same results. Your data is so far north as to be not
very deterministic; if you get the real definitions from the database
things improve (since it has access to more accurate transforms).
It would be helpful to drop this over as raster background or
something as a reference point. I cannot be sure if you are looking at
a bug; or if you are looking at a fact of life with your data.
Jody
On 23/09/2009, at 9:27 PM, Rahul... हम पंछी
उन्मुक्त गगन के wrote:
Hi Jody, So now as you have seen the behaviour, can you tell me what
is the problem? Why those two layers don't overlap in different
projections? Is this a bug or it is meant to happen that way?
2009/9/23 Jody Garnett <[email protected]>
Hi Rahul:
Your data set seems to be quite far south at -82.493. That far south
lat long coordinates can be pretty numerically unstable as your
example shows.
I went through replacing your CRS definition from your prj file with
the official definition from the EPSG database and was able to get
your two rectangles to take on different shapes.
Thanks for attaching the files; you may also wish to compare the
result with uDig 1.2 M6 vs uDig 1.2 M7 since we upgraded the EPSG
code definitions.
Jody
On 23/09/2009, at 6:23 PM, Rahul... हम पंछी
उन्मुक्त गगन के wrote:
Hi All, I have two shape files, having UTM 11C(EPSg : 32711) and WGS
84(EPSG : 4326) projections. When I open them in a map, then they
overlap in the UTM projection, but when I change the projection to
WGS 84 then they don't overlap. I don't know whats the problem,
because I think, if the layers overlap in one projection then they
must overlap in other projections also. Please help in this regard.
I am attaching the files for your reference.
--
Thanks,
Rahul
<test reprojection.zip>
--
Thanks,
Rahul
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