querymap with stacked points

[Steve Lime]

We need to get a "limit" keyword in place for just such an occasion. I
have some other
ideas though. It depends on where you want to limit the search results-
in a template
or in a query map.

  - for a template you could load all points into javascript objects and
then only display
the first one (layer header defines the object, layer template populates
objects, and
layer footer displays the first). This is easy to do, let me know if you
need an example.

 Actually for a query map you should be ok since the points are stacked
anyway I would
think the visual effect would be what you want (e.g. that location
highlighted).

Steve

>>> "Hunter, David - St. Louis Park, MN" <David.Hunter at fnf.com> 12/19/06
3:21 PM >>>

I use mode=nquery because there are two polygon layers that may or may
not have features at the same point, and those need to be listed in the
query results also.  If there is no other workaround, I will have to
work out some compromises and use mode=query.

-----Original Message-----
From: Steve Lime [mailto:Steve.Lime at dnr.state.mn.us] 
Sent: Monday, December 18, 2006 5:20 PM
To: Hunter, David - St. Louis Park, MN; MAPSERVER-USERS at lists.umn.edu
Subject: Re: [UMN_MAPSERVER-USERS] querymap with stacked points

CGI mode=query will return the first feature encountered within
tolerance limits.

Steve

>>> "Hunter, David - St. Louis Park, MN" <David.Hunter at FNF.COM>
12/18/2006 10:01:15 AM >>>
No mapscript, just CGI Mapserver.  Data sources are shape files.

  _____  

From: Hal Mueller [mailto:hal at mobilegeographics.com] 
Sent: Friday, December 15, 2006 3:57 AM
To: Hunter, David - St. Louis Park, MN
Cc: MAPSERVER-USERS at LISTS.UMN.EDU 
Subject: Re: querymap with stacked points

Are you using Mapscript?  What is the datastore--shapefile, database,
other?

There are lots of ways to do this, depending on how your app is
structured.

At 10:18 AM -0600 12/13/06, Hunter, David - St. Louis Park, MN wrote:

	My map application allows users to click on point features,
which causes a popup that displays information about that feature. 
Due
to reasons I won't go into here, we sometimes have multiple points
stacked on top of each other.  They are essentially the same feature,
but with some slightly different attributes to each record.  Is there
a
way that I can filter this, so that only the first feature found is
returned in the query?

	 

	David S. Hunter
	Sr. Software Engineer
	Fidelity National Geographic Solutions
	division of Fidelity National Financial
	5353 Gamble Drive, Suite 201
	St. Louis Park, MN 55416
	" Email: david.hunter at fnf.com <mailto:david.hunter at fnf.com> 
	' Phone: 952.542.1440 ext. 256
	7 Fax: 952.542.3859