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Steve (L),
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<div class="">That’s really close to what I was looking for. I vaguely remembered something going on enhancement wise, related to URL requests inside of a MapServer request.
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<div class="">I’ll try this out and get back here with the results.</div>
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<div class="">bobb</div>
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<div class="">On Jul 11, 2017, at 4:55 PM, Lime, Steve D (MNIT) <<a href="mailto:steve.lime@state.mn.us" class="">steve.lime@state.mn.us</a>> wrote:</div>
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<div class="">You can also do pure mapserver with a query layer and a URL template. It's doing a dynamic redirect but it's a single call from your perspective. You'd have a layer like so:<br class="">
<br class="">
LAYER<br class="">
NAME 'parcel_query'<br class="">
TYPE QUERY<br class="">
DATA 'parcels'<br class="">
VALIDATION<br class="">
qstring '^[0-9]{16}$' # 16-digit pin number<br class="">
END<br class="">
TEMPLATE 'http://{url to display service}&mapext=[shpext]'<br class="">
END<br class="">
<br class="">
and then a query URL like so:<br class="">
<br class="">
<a href="http://.../cgi-bin/mapserv?map=mymap.map?mode=itemquery&qlayer=parcels&qitem=pin&qstring=202923230045" class="">http://.../cgi-bin/mapserv?map=mymap.map?mode=itemquery&qlayer=parcels&qitem=pin&qstring=202923230045</a><br class="">
<br class="">
Assumes one feature per pin...<br class="">
<br class="">
It's not a pretty URL, if that's needed use a script as Steve suggests or something like mod_rewrite in front.<br class="">
<br class="">
Steve<br class="">
<br class="">
-----Original Message-----<br class="">
From: mapserver-users [<a href="mailto:mapserver-users-bounces@lists.osgeo.org" class="">mailto:mapserver-users-bounces@lists.osgeo.org</a>] On Behalf Of Stephen Woodbridge<br class="">
Sent: Tuesday, July 11, 2017 1:07 PM<br class="">
To: <a href="mailto:mapserver-users@lists.osgeo.org" class="">mapserver-users@lists.osgeo.org</a><br class="">
Subject: Re: [mapserver-users] Fwd: Zoom to something and display in one shot from MapServer CGI.<br class="">
<br class="">
Bobb,<br class="">
<br class="">
If you using sql you can do this in one pass, just write a trivial php <br class="">
script that returns an image.<br class="">
<br class="">
1. connect to db<br class="">
2. sql to query expanded bbox of parcel<br class="">
select st_astext(st_extent(st_expand(geom, delta)))<br class="">
from parcels where pin=?<br class="">
3. create url to mapserver based on bbox and image size<br class="">
5. header('Content-type: image/png');<br class="">
4. passthru(url);<br class="">
<br class="">
Don't make it more complicated than it needs to be. You can do the same <br class="">
using perl, python, script language of your choice.<br class="">
<br class="">
-Steve<br class="">
<br class="">
On 7/11/2017 12:22 PM, Basques, Bob (CI-StPaul) wrote:<br class="">
<blockquote type="cite" class=""><br class="">
<blockquote type="cite" class=""><br class="">
Hi Steve,<br class="">
<br class="">
I want to send a CGI request like : ServerName?pin=202923230045<br class="">
<br class="">
And zoom to the pin (parcel polygon) in the returned image and also <br class="">
add a buffer percentage. This is for a reporting application. I can <br class="">
do it with an intermediate service, but it’s been awhile since I did <br class="">
this, and was wondering if anything new in MapServer might help with <br class="">
this for a single pass approach.<br class="">
<br class="">
The zoom parameters would be hardcoded into the MapFILE in an ideal <br class="">
world, I can build an SQL for this for example, but I recall I <br class="">
couldn’t use the BBOX returned from the SQL as a BBOX for Mapserver <br class="">
parent call, my memory is cloudy on that capability from MapServer <br class="">
though, hence the question. Now that you have me talking it through <br class="">
though, I think the last time I asked about this it was to inquire <br class="">
about possibly chaining more than one MapServer call together to get <br class="">
the result. I think there were fears at the time about possible <br class="">
runaway processes being created . . . .<br class="">
<br class="">
bobb<br class="">
<br class="">
<br class="">
<blockquote type="cite" class="">On Jul 11, 2017, at 10:38 AM, Stephen Woodbridge
<br class="">
<<a href="mailto:woodbri@swoodbridge.com" class="">woodbri@swoodbridge.com</a> <<a href="mailto:woodbri@swoodbridge.com" class="">mailto:woodbri@swoodbridge.com</a>>> wrote:<br class="">
<br class="">
On 7/11/2017 10:39 AM, Basques, Bob (CI-StPaul) wrote:<br class="">
<blockquote type="cite" class="">All,<br class="">
It’s probably because it’s Tues. but I think I’ve asked this before <br class="">
in the past . . .<br class="">
I have a DB with PIN numbers for PARCELS and I want to be able to <br class="">
auto-zoom(with buffer) to a PARCEL by just sending in a PIN number <br class="">
via CGI.<br class="">
can the BBOX be pulled from the DB based on the geom in one shot? <br class="">
I’ve done this in the past with a Webservice that went and grabbed <br class="">
the BBOX separately, then assembled the url for getting the graphic <br class="">
back from Mapserver.<br class="">
</blockquote>
<br class="">
Bobb,<br class="">
<br class="">
What are you trying to zoom? the image or the client?<br class="">
<br class="">
If it is the client then how is mapserver on the server supposed to <br class="">
tell the client it needs to zoom? You have to query the server to get <br class="">
the bbox then make the client zoom appropriately.<br class="">
<br class="">
For the image, assuming you want a static image showing the parcel, <br class="">
then I would write a php/python/perl script the you pass the PIN to <br class="">
and it does the work to figure out the extents and return the image.<br class="">
<br class="">
-Steve W<br class="">
<br class="">
---<br class="">
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<br class="">
"If you're going through hell, keep going. “<br class="">
- Winston Churchill<br class="">
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</blockquote>
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"Be nice to people on your way up because you meet them on your way down."<br class="">
- Jimmy Durante<br class="">
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<dt class="">"The use of COBOL cripples the mind; its teaching should, therefore, be regarded as a criminal offense."<span class="Apple-converted-space"> </span></dt><dd class="">- Edsgar Dijkstra
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