[Mapserver-users] point collisions

[Kralidis,Tom [Burlington]]

The 'time' attribute was given as an example.  Substitute that with whatever
the fieldname is for the classification/filter.

..Tom

> -----Original Message-----
> From: Paul Dymecki [mailto:pdymecki at sympatico.ca] 
> Sent: Tuesday, April 27, 2004 6:17 PM
> To: Kralidis,Tom [Burlington]
> Cc: mapserver-users at lists.gis.umn.edu
> Subject: Re: [Mapserver-users] point collisions
> 
> 
> I do have the former, but don't have a time attribute in my 
> dbf file.  Is the time attribute just a time when the record 
> was created? Paul
> ----- Original Message -----
> From: "Kralidis,Tom [Burlington]" <Tom.Kralidis at ec.gc.ca>
> To: "'Paul Dymecki'" <pdymecki at sympatico.ca>
> Sent: Tuesday, April 27, 2004 6:03 PM
> Subject: RE: [Mapserver-users] point collisions
> 
> 
> >
> >
> > > -----Original Message-----
> > > From: Paul Dymecki [mailto:pdymecki at sympatico.ca]
> > > Sent: Tuesday, April 27, 2004 4:31 PM
> > > To: Kralidis,Tom [Burlington]
> > > Subject: Re: [Mapserver-users] point collisions
> > >
> > >
> > > Hi Tom,
> > >     Well the scenario is  a bit cheesey. There are multiple 
> > > ecological monitoring initiatives with the same home 
> office and they 
> > > are all tagged with the home office's lat/long 
> unfortunately that's 
> > > all that is available at the moment,  so i just have to 
> compensate.  
> > > Would the filteritem do the trick in this case? thx, Paul
> >
> > I don't understand.  Do you have one layer with many identically
> positioned
> > points?  Or you have many layers with points who, when 
> displayed atop 
> > one another, appear as one point?  If the former, you can do 
> > filteritem, depending on how you'd like the app to work.
> >
> > ..Tom
> >
> > > ----- Original Message -----
> > > From: "Kralidis,Tom [Burlington]" <Tom.Kralidis at ec.gc.ca>
> > > To: "'Paul Dymecki'" <pdymecki at sympatico.ca>; 
> > > <mapserver-users at lists.gis.umn.edu>
> > > Sent: Monday, April 26, 2004 11:57 PM
> > > Subject: RE: [Mapserver-users] point collisions
> > >
> > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Paul Dymecki [mailto:pdymecki at sympatico.ca]
> > > > > Sent: Monday, April 26, 2004 9:08 PM
> > > > > To: mapserver-users at lists.gis.umn.edu
> > > > > Subject: [Mapserver-users] point collisions
> > > > >
> > > > >
> > > > > Hello,
> > > > >    I was wondering if there is some feature in mapserver in 
> > > > > which point collisions can be compensated for.  I'm currently
> > > working with
> > > > > a point layer that occasionally has identical 
> lat/longs for some 
> > > > > points.. thx, Paul
> > > > >
> > > >
> > > > What is the criteria which makes 1..n identical points 
> individual 
> > > > records? First thought would be a filter, i.e.:
> > > >
> > > > FILTERITEM "TIME"  # where time is the name of the time
> > > column in the
> > > > shapefile's dbf
> > > >
> > > > FILTER "%time%"    # whatever comes through the URL as
> > > "&TIME=timestring&";
> > > > timestring is the value passed to the filter
> > > >
> > > > Hope this helps
> > > >
> > > > ..Tom
> > > >
> > > > =========================
> > > > Tom Kralidis
> > > > Systems Scientist
> > > > Environment Canada
> > > > Tel: +01-905-336-4409
> > > > http://www.ec.gc.ca/
> > > >
> > > > > _______________________________________________
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> Mapserver-users at lists.gis.umn.edu 
> > > > > http://lists.gis.umn.edu/mailman/listinfo/maps> erver-users
> > > > >
> > >
>