Hi Michael,

>  I am extracting features from an Oracle Spatial database. In the
>  database, all geometries are 4-dimensional, the 4th coordinate of
each
>  point of e.g. a polygon being a point metadata key.
> 
>  I use the ORACLE8I reader. But it seems like FME just ignores the 4th
>  coordinates. Every feature read is correctly detected with the proper
>  geometry type etc., and the geometrical coordinates are OK. But the
>  features seem to contain no information at all about 4th coordinates.

Good news!

FME 2007 Beta has what you need.  The "rich geometry" has come to the
rescue. (You can read about rich geometry on the fmepedia at
http://www.fmepedia.com/index.php/Rich_Geometry_Model). 

As part of upgrading our Oracle reader to do Rich Geometry, we now
support reading the measures.  Just view your data in the viewer by
reading it from Oracle, if you select a feature, you should see all its
measures there in the geometry area of the feature information dialog.
And I believe that measures are carried along through the various
processing operations throughout FME.

To actually get at the measures, you need to use one of the
MeasureExtractors in workbench (there are a few of them depending on the
kind of geometry you're working with).  

Rich geometry is a big deal in the new FME, not only because we can now
model and store complex paths and boundaries composed of arcs and lines,
but also because we can carry arbitrary numbers of measures along with
these. 

Let us know how it goes.

Dale
 
----------------------------------------------------------------------
Dale Lutz              Safe Software Inc.                 [EMAIL PROTECTED]
VP Development         Surrey, BC, CANADA        phone: (604) 501-9985
                       http://www.safe.com         fax: (604) 501-9965
----------------------------------------------------------------------
 
> 




For insights into what's up at Safe Software and what's on the development 
horizon, visit Safe's blog at spatial-etl.blogspot.com.

Safe Software has also made slides available that outline enhancements planned 
for FME 2007. The slides are from the "Road Ahead" presentation given on Day 2 
of the FME Worldwide Users Conference. To view these slides, visit 
www.safe.com/2006uc.

 
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