[mapserver-users] QueryByPoint

[Pericles S. Nacionales]

Andrew, Toni,

Could it be a topology or region problem?  I'm out of the country right
now so I can't provide detailed answers (don't have ArcView with me).  If
you are using ArcView, download the XTools extension from the ESRI users
scripts page.  Or just search for XTools on Google.  XTools has a tool
that can "flatten" you polygon layers.  That would be my guess on your
problem.
Good luck!
Perry

Pericles S. Nacionales 
Research Assistant
GIS and Remote Sensing Lab
Department of Forest Resources
University of Minnesota

(612) 624-3459
pnaciona at gis.umn.edu

On Fri, 21 Sep 2001, ANDREW WOOLEY wrote:

> Folks,
> 
> I received this reply to my initial query and I have yet to receive any answer.  Does anyone have an idea why some of my shapefiles will work with a query and some won't?  I have line themes that seem to always work, but for some reason polygon features don't work.  I have a shapefile that is parcels and it will only return results on the very largest parcels i.e. >100 acres.  However, I have parks polygons and can't seem to even get results on any of them.  I can query point features, but if I convert my polygons to points and try that, using the very same LAYER def. and just changing the DATA to point to the new one and it doesn't work.  It is very, very frustrating.  Does anyone have any insight about this?
> 
> Sorry for my difficulty in explaining, but it seems to be strange behavior.  I tried to get the latest nightly build (I need 3.5) and it won't compile (as of yesterday afternoon).  Thanks for any good suggestions.
> 
> Andrew
> 
> >>> toni hernández <toni at giscampus.udg.es> 09/21 12:35 AM >>>
> Hi Andrew,
> 
> I have the same problem you have and no idea how to solve it. I am starting
> to think that maybe it is no way to make it work properly.
> 
> Anywat, did anyone tell you something.
> 
> Thanks.
> 
> ----- Original Message -----
> From: ANDREW WOOLEY <AWOOLEY at mountainland.org>
> To: <mapserver-users at lists.gis.umn.edu>
> Sent: Wednesday, September 19, 2001 12:27 AM
> Subject: [mapserver-users] QueryByPoint
> 
> 
> > Folks,
> >
> > I apologize if this has been asked before, but I can't seem to find any
> thing about it on the archives.
> >
> > For some of my themes, the query works just fine.  However, for others, it
> doesn't work at all.  I have tried many different things to get it to work,
> but I can't understand the problem.  I have copied the mapfile layer
> definitions for one that works and just change the data pointer and it won't
> work.  I have tried lots of combinations and I have discovered that - for
> one theme - if I click on very large polygons, it works, but anything very
> small will not work.  The same holds true with lines - larger lines work -
> smaller ones don't. Does this make any sense to anyone?  I just can't figure
> it out.  I have adjusted my tolerance from 1 to 1000 and many places in
> between, but no avail.
> >
> > Any suggestions would be appreciated.
> >
> > Andrew
> 
>