Dave,
Can you please post your mapfile or at least the object corresponding to
the layer you're querying? We can't answer your question without the
details.
-Perry
Dave Stone wrote:
Apologies for emailing direct -- LISTSERV keeps rejecting my posts as
duplicates.
No joy so far, I'm afraid, Perry. You were right about the PostGIS names
being upper-case, so I've
changed them all to lower-case, and the result.html query template now
looks like this:
# query template
<html>
<head>
<title>MapServer - ItemQuery</title>
</head>
<body bgcolor="#ffffff">
<font size="+2" face="arial,helvetica"><b>Case 1: Simple ItemQuery With
QueryMap</b></font>
<p>
This is just a simple dump of a few attributes for an individual location
in the test suites parishes layer:
<p>
<b>Place Name:</b> [placename]<br>
<b>Qualifying Name:</b> [qualifyingname]<br>
<b>Location Type:</b> [locationtype]<br>
<b>Grid Reference:</b> [locationgridref]<br>
<b>Religious Order:</b> [religiousorder]<br>
<p>
and here's the map of the query results (you can zoom to a set of
results as well):
<p>
</body>
</html>
I had TOLERANCE set to 5 (pixels) for the PostGIS layer originally, and
tried upping it to 25 in
hope that it would make it easier to 'hit the spot' when clicking on the
dots on the map. But no
output -- just a blank page titled 'MapServer Message'.
I also tried setting DEBUG ON for the layer and class objects, but there
wasn't anything significant
in the log file, just some map extent parameters.
Thanks for the pointer to the 'flashy' mapfile reference; there's some
useful examples in there.
Cheers,
Dave
----- Original Message ----- From: "Pericles S. Nacionales"
<[EMAIL PROTECTED]>
To: "Dave Stone" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Monday, March 27, 2006 6:25 PM
Subject: Re: [UMN_MAPSERVER-USERS] Web application error
Dave,
What does your result.html query template look like? Did you
capitalize all
the attribute names (as in "[ATT_NAME]")? If so, make them small caps
for
PostGIS tables--[att_name].
Also, here's another hint: Use the TOLERANCE keyword...
http://mapserver.gis.umn.edu/docs/reference/mapfile/layer
Or if you prefer a fancier mapfile reference, check
http://umn.mapserver.ch/index_en.php
Good luck!
-Perry
On Monday 27 March 2006 08:07, Dave Stone wrote:
I am having problems adapting the class-level query template
technique in
Example 3.1 of the MapServer Tutorial.
Essentially, I want to do as the tutorial example does, i.e. be able to
click on a point feature on the map, and have a query template open
up and
display attributes for the point.
The only significant difference between my setup and the example's
(that I
can see) is that the example queries a layer (cities) whose data
source is
a shapefile containing polygons, whereas my source is points in a
PostGIS
view (dedloc). The .map file segment for the layer is:
LAYER # query layer using the dedloc PostgreSQL view
CONNECTIONTYPE postgis
NAME saint_dedications
CONNECTION "user=erdb13 dbname=stdraft"
DATA "geom from dedloc USING UNIQUE dr USING SRID=27700"
STATUS DEFAULT
DEBUG ON
TYPE POINT
FILTERITEM dedicationtype
FILTER "dedicationtype='%dtype%'"
TOLERANCE 5
CLASS
NAME "Dedications"
MINSCALE 2000000
TEMPLATE "result.html"
STYLE
SYMBOL "circle"
SIZE 5
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END
END
CLASS
MAXSCALE 1900000
TEMPLATE "result.html"
STYLE
SYMBOL "circle"
SIZE 10
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END
END
END # test query layer
and the URL invoking the query template is:
http://drayton.ucs.ed.ac.uk/cgi-bin/mapserv?imgxy=300.0+300.0&;
imgext=217114.636666+624099.796666+387452.636666+794437.796666&
map=%2Fvar%2Fwww%2Fhtml%2Fsaints%2Fdata%2Fparish%2Fuig.map&
savequery=true&mode=browse&img.x=320&img.y=271&zoomdir=0&zoomsize=4&
layer=parish_labels&layer=parish&layer=saint_dedications&mode=query&
dtype=Altar+dedication
What I get when I click on a dot on the map displaying
saint_dedications is
a web page headed 'MapServer Message', but then no message, no
attributes
for the dot I clicked, nothing!
Can anyone suggest what might be going wrong? The query template
(result.html) is very simple; like Example 3.1, it just displays
boilerplate HTML and attribute values for the dot that was clicked.
--
Pericles S. Nacionales
Conservation Biology Program
University of Minnesota
e-mail: [EMAIL PROTECTED]
.
