OBIEE -Spatial Data in ST Geometry

Hi,
Below is my sample spatial data in oracle 10g database.I am trying to build a OBIEE map with Google maps as background map.Can i use the ST geomotry as below directly or should i convert it to SDO geometry .I converted ST geometry to SDO but when i use it for the maps in obiee the lines are all over the map.Can anyone suggest me the steps i need to take when the spatial data is in ST geometry.SRID for google mpas is 3785.
ST GEMOTRY
SDE.ST_GEOMETRY(8,20,-8236196.0936,4971596.5728,-8236021.1316,4971750.2835,NULL,NULL,NULL,NULL,8520.953541,512.173693478845,3857,'oracle.sql.BLOB@14f2c59')
SDO GEOMETRY
MDSYS.SDO_GEOMETRY(2003,8307,NULL,MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,1),MDSYS.SDO_ORDINATE_ARRAY(-8236058.0112,4971596.5728,-8236049.1351,4971612.8814,-8236034.0083,4971640.7315,-8236025.6322,4971656.1619,-8236021.1316,4971664.1908,-8236034.878,4971671.5954,-8236036.5026,4971672.5993,-8236061.2461,4971686.0279,-8236089.489,4971701.3389,-8236179.0918,4971750.2835,-8236183.4673,4971742.2546,-8236196.0936,4971718.9202,-8236142.1072,4971688.8009,-8236116.7386,4971674.6197,-8236119.9892,4971667.8453,-8236082.6239,4971647.0125,-8236077.5001,4971644.2516,-8236084.1259,4971632.3338,-8236093.2518,4971616.0251,-8236058.0112,4971596.5728))

Hi Syedurur,
You may be in the wrong forum as OBIEE only utilizes MapViewer as far as I know.
MapViewer
So as Stefan notes, you are not going to be able to use SDE.ST_GEOMETRY with OBIEE as its not an Oracle product. However, your ArcSDE registered MDSYS.SDO_GEOMETRY geometry should work fine. Yet in your example you posted you seem to have Web Mercator (3857) ordinates but the SDO_SRID is WGS 84 (8307) so that is mangled and not going to draw anything correctly. Try changing the SDO_SRID to 3857.
Now Stefan is a bit incorrect about the ease of moving from SDE.ST_GEOMETRY to MDSYS.SDO_GEOMETRY. The folks at ESRI make it simple to move in the other direction but - surprise! - not to move away from their proprietary spatial type.
ArcGIS Help (10.2, 10.2.1, and 10.2.2)
Now you can still accomplish this by exporting your data from the geodatabase and then importing it back in as SDO but that is certainly not as simple as using the above one-step migration tool.
In theory you could convert SDE.ST_GEOMETRY to MDSYS.SDO_GEOMETRY on the fly in the database with SQL. Both ESRI and Oracle proudly spout their unwavering support for OGC standards. Thus this should work
SELECT MDSYS.SDO_GEOMETRY(SDE.ST_AsText(a.shape),8307) FROM my_ESRI_ST_GEO_table a;
(Note change the 8307 to the matching Oracle SRID of your data)
But my experience was that the very old Oracle Java WKT parser mixed with the somewhat non-standard ESRI External DLL WKT writer is not a very reliable combination. But do give it a try and feel free to report back to us how it goes. I really have not tried this in a couple of years so perhaps things are better now.
Cheers and Happy New Years,
Paul

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Theresa A Radke
Posts: 20
OTN Member Since: Jul, 2001
retrieving spatial and non spatial in same query. May 23, 2003 12:02 AM
retrieving spatial and non spatial in same query.

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Hi,
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Regard
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Hi Unnamed Cat Person,
Sorry I am late responding to your questions. You should sign your postings with the name of your cat. I pester posters to provide a name not just to be petulant, but unless we have names to reference it can be difficult to tell if I am responding to you or to Stefan or to Bryan. It certainly does not have to be your real name, the cat's name would work just fine.
So you are looking for information not on how to do spatial sorting but rather the "why to do this" and "how does it work" questions surrounding spatial sorting. This forum is generally not a deep well of such information as it tends to focus on practical implementations. As a group we often should be more introspective on the reasons why things work they way they do and if there are better ways to do them but then to some degree that is what our employers pay Oracle to do. You might get better answers for such questions over on stack exchange (Geographic Information Systems Stack Exchange) or you might not.
MD.HHENCODE is an undocumented, fully wrapped, by default unexecutable function in Oracle Spatial - so you won't find anything on this from Oracle. Exactly how it works is "beyond our ken". The 12c version of Pro Oracle Spatial is due out next year and I personally wonder if they should keep this section in the book. I should also note its quite the pain in the backside to use returning a RAW datatype of all things. So as the book says, the function "more or less" encodes a point in spatially sorted order. So its very difficult for any of us to say if this function works well or sensibly or follows some established formula, etc. Its a proprietary black box.
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Z-order curve - Wikipedia, the free encyclopedia
Note that as none of us can say how HHENCODE functions, none of us can really state definitively that Simon's Morton Curves are better. Oracle could quietly change the function tomorrow to produce Morton curves (for all I know it does already as I haven't used the thing in years). But I think Simon's work is fantastic so in my opinion then his way is better! Take that for what its worth. Show his nifty illustrations to your boss and that will end any discussion of your rational.
But wikipedia suggests that an even better way to go is using Hilbert curves. So hey, does anyone on the list have this implemented in oracle spatial?
Hilbert curve - Wikipedia, the free encyclopedia
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X Y striping = useless for clustering
HHENCODE = "more or less" works okay in unknown manner
Greener Morton Curves = works well, fully explained, coded for you
Hilbert Curves = might be better, fully explained, you need to code it yourself
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Cheers,
Paul

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From one of the data providers, e.g.
TomTom: http://www.tomtom.com/en_gb/licensing/products/maps/geospatial-oracle/
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OBIEE -Spatial Data in ST Geometry

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