GEOS integration questions

[Smith, Michael ERDC-CRREL-NH]

Locator now includes coord transformation routines as of 10gr2

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---- Original Message ----
From: "Bob Basques" <bob.b at GRITECHNOLOGIES.COM>
Date: 1/24/06 9:56 am
To: "MAPSERVER-USERS at LISTS.UMN.EDU" <MAPSERVER-USERS at LISTS.UMN.EDU>
Subj: Re: [UMN_MAPSERVER-USERS] GEOS integration questions
The standard Oracle install (workgroup or better, someone correct me if 
I'm wrong) comes with something called "Locator", while not all of the 
Spatial Cartridge capabilities are included in it, there are some 
Spatial components that work without a full bore Spatial implementation.

You might want to cross reference your list with those capabilites.

do a search on Oracle Spatial vs Oracle Locator for more info.

a blurb I found here:

http://atlis.nl/en/sis/knowledge/oracle-spatial.html


    Oracle Spatial vs. Oracle Locator

Oracle Locator is a standard component of the database. Locator has the 
same geographical data structure and index mechanisms as Oracle Spatial, 
but lacks some functionalities. Functions and procedures for coordinate 
transformation, spatial aggregations and tuning options that are part of 
Oracle Spatial are missing in Oracle Locator.

If Oracle database products are used, there are no additional costs for 
Oracle Locator. Oracle Spatial has to be purchased as an addition to 
Oracle's "enterprise edition" database.


bobb





listuser HH wrote:

> Steve Lime wrote:
>
>> The only GEOS methods exposed are convex hull and a buffer. I didn't
>> want to go nuts until I received some feedback about the usefulness of
>> that type of functionality. They are not difficult to add. Are there 
>> specific
>> operators you are interested in and would be willing to test? Let me 
>> know
>> if so and we can work in the 4.9 branch.
>>
>> A full list of operators supported by GEOS is available at 
>> geos.refractions.net.
>>
>> As for mapfile integration. My idea was to expose a few operators 
>> that work of a single shape (e.g. buffer, convex hull, etc...) via 
>> the PROCESSING
>> block that is currently used for defining raster operations. That way 
>> you
>> could basically apply a GEOS operator to all features of a particular 
>> layer as
>> they are read from the data source- for any data source.
>>
>> Steve
>>
>>  
>>
>>>>> listuser HH <listuser at HERZSYS.DE> 01/19/06 5:49 AM >>>
>>>>>       
>>>>
>> Hello all,
>>
>> I would like to know how much of the GEOS functions (and which) are 
>> already available in the MapScript API and in PHP MapScript. I found 
>> only intersects and cointains for both. The shapeObj in PHP Mapscript 
>> also has buffer and convexhull.
>>
>> Can someone tell me what the plans for including more of the GEOS 
>> functions are?
>>
>> Are there plans to use some functions (i.e. buffer) directly in the 
>> mapfile?
>>
>> Are there any docs that give some more information?
>>
>> Regards
>>
>> Norbert
>>
>>
>>  
>>
> Hi Steve,
>
> sorry for the late reply I was not in office.
>
> At the moment I'm collecting arguments to convince costumers to use 
> MapServer. I know there are many good reasons to use MapServer - 
> mostly because of the good work you and the other developers did and 
> do - but I want to give a full overview. I tested PostGIS a bit and I 
> think that there is much potential but some of our costumers have 
> Oracle and they will not use Postgres. So it will be nice to have some 
> of the functions available in MapServer.
>
> In the following I have made a list with the things I was thinking of. 
> I give a ranking for the importance (1 - most / 5 - fewest).
> - crosses -> 1
> - (boolean) intersect -> 2
> - (geom) intersect -> 2
> - union -> 2
> - difference -> 3
> - getCentroid -> 3
> - getLength -> 4
> - getArea -> 4
> - touches -> 4
> - isValid -> 5
> - disjoint -> 5
>
> If others are interested perhaps we can open a poll for "Geometry 
> functions in MapServer" with all the GEOS functions to see what would 
> be important for a bigger group of people.
>
> Thanks and my best regards
>
> Norbert
>
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