Yes, you need to rebuild the geometry using a 3D PackedCoordinateSequence.
The easiest way to do this is to make a new GeometryFactory based on a
3D PCS, and then use the GeometryFactory.createGeometry method on the
original geometry. This will return a new geometry using the new PCS.
You can then update the Z ordinate as required.
Fernando González wrote:
Hi all,
I'm trying to add a z coordinate to a 2D geometry and I'm using a
CoordinateSequenceFilter without a total success. It doesn't work when
the geometry has been built using a PackedCoordinateSequence and I get
an ArrayIndexOutOfBoundsException when I set the z ordinate. I
understand that PackedCS for 2d geometries doesn't have enough space
to store 3d geometries.
This issue is related with another one I had some time ago[1]. The
solution has worked fine until I've tried to add 3d ordinates to a 2D
PackedCoordinateSequence.
Is there a general method to transform a 2d geometry into a 3d
geometry? Mayeb is it possible to change the coordinate sequences a
geometry uses? Maybe kind of clonning?
I'm thinking of analyzing recursively the Geometry and producing
another one with the 3d coordinates. Has anyone done this before?
Thanks in advance.
[1]http://lists.refractions.net/pipermail/jts-devel/2008-June/002539.html
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Martin Davis
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Refractions Research, Inc.
(250) 383-3022
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