MapServer and PostGIS GEOMETRY type

Tue Oct 30 23:47:42 PDT 2007

Hi Jacob

You can split them up and be lazy all in one. Just use FME, it will do
the job for you automatically ... www.safe.com. However, the being lazy
would cost you a few bucks in this case :-( ...

Mit freundlichem Gruss / Best Regards
Flavio Hendry

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-----Original Message-----
From: "Delfos, Jacob" <Jacob.Delfos at MAUNSELL.COM>
To: MAPSERVER-USERS at LISTS.UMN.EDU
Date: Tue, 30 Oct 2007 16:37:03 +0900
Subject: Re: [UMN_MAPSERVER-USERS] MapServer and PostGIS GEOMETRY type

> Hi Jukka,
> 
> When I have the data a bit cleaned up, I'll have a look if I can put
> something together. Currently I'm still in the process of "sifting
> through" :)
> 
> I'm dealing with a lot of MapInfo files with mixed geometries, and I
> want to see if I can get away with being lazy (meaning I don't split
> up
> tables by geometry).
> 
> Regards,
> 
> Jacob
> 
>  
> 
> > -----Original Message-----
> > From: Rahkonen Jukka [mailto:Jukka.Rahkonen at mmmtike.fi] 
> > Sent: 30 October 2007 14:52
> > To: Delfos, Jacob; MAPSERVER-USERS at LISTS.UMN.EDU
> > Subject: RE: [UMN_MAPSERVER-USERS] MapServer and PostGIS GEOMETRY
> type
> > 
> > Hi Jacob,
> > 
> > Would it be impossible for you to create a couple of such 
> > records and make a controlled trial to see what really happens?
> > 
> > -Jukka Rahkonen-
> > 
> > 
> > -----Original Message-----
> > From: UMN MapServer Users List on behalf of Delfos, Jacob
> > Sent: Tue 30.10.2007 0:53
> > To: MAPSERVER-USERS at LISTS.UMN.EDU
> > Subject: Re: [UMN_MAPSERVER-USERS] MapServer and PostGIS GEOMETRY
> type
> >  
> > Hi Jan,
> > 
> > Thanks for your reply. But I still need to find out how MapServer
> will
> > deal with the records that contain an unexpected geometry 
> > type. I could
> > have a polygon layer pointing to a table which I expect to contain
> > polygons. But if the geometry type of the table is GEOMETRY, then
> it
> > could contain a line object. What will MapServer do?
> > 
> > If I do an attribute query on such a table, will it return matching
> > records even if the geometry object is a line, though the layer is
> a
> > polygon layer?
> > 
> > Regards,
> > 
> > Jacob
> >  
> > 
> > > -----Original Message-----
> > > From: Jan Hartmann [mailto:j.l.h.hartmann at uva.nl] 
> > > Sent: 29 October 2007 20:13
> > > To: Delfos, Jacob
> > > Cc: MAPSERVER-USERS at LISTS.UMN.EDU
> > > Subject: Re: [UMN_MAPSERVER-USERS] MapServer and PostGIS 
> > GEOMETRY type
> > > 
> > > Hi Jacob,
> > > 
> > > The Mapfile Reference Manual, chapter Layer says 
> > > (http://mapserver.gis.umn.edu/docs/reference/mapfile/layer)
> > > 
> > > ------------------------------------------------------------
> > > 
> > > TYPE [point|line|polygon|circle|annotation|raster|query|chart]
> > > 
> > >      Specifies how the data should be drawn. Need not be the 
> > > same as the 
> > > shapefile type. For example, a polygon shapefile may be drawn 
> > > as a point 
> > > layer, but a point shapefile may not be drawn as a polygon 
> > > layer.Common 
> > > sense rules.
> > > 
> > > ------------------------------------------------------------
> > > 
> > > You probably just have to try it out on your data.
> > > 
> > > Jan
> > > 
> > > Delfos, Jacob wrote:
> > > > Hi List,
> > > > 
> > > > For a particular client I have to translate a lot of 
> > > MapInfo files into 
> > > > PostGIS. Some files may contain some different geometries, 
> > > which ogr2ogr 
> > > > doesn't like. So I force the geometry type to "GEOMETRY" (-nlt 
> > > > GEOMETRY). It translates fine, and seems to draw fine in 
> > > MapServer. But 
> > > > how does MapServer really deal with it?
> > > > 
> > > > If I have a polygon layer, and point it to a PostGIS table 
> > > that contains 
> > > > objects of the type "GEOMETRY", does it simply ignore 
> > > anything that is 
> > > > not a polygon? What about the results of attribute queries? 
> > > Would those 
> > > > be filtered on the geometry type of the layer?
> > > > 
> > > > I can avoid using "GEOMETRY type" by translating the files 
> > > in FME, but 
> > > > I'd prefer to recommend an Open Source solution.
> > > > 
> > > > Regards,
> > > > 
> > > > Jacob
> > > > 
> > > > 
> > > > *JACOB DELFOS
> > > > GIS ANALYST
> > > > *Maunsell Australia Pty Ltd
> > > > 629 Newcastle Street, Leederville, WA 6007
> > > > PO Box 81, Leederville, WA 6902
> > > > Western Australia
> > > > ABN 20 093 846 925
> > > > 
> > > > Tel     + 61 8 9281 6185
> > > > Fax    + 61 8 9281 6297
> > > > _jacob.delfos at maunsell.com_
> > > > 
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