mapserver error
Ed McNierney
ed at TOPOZONE.COM
Thu Jan 17 20:36:38 EST 2008
Lee -
OK, here's some hypothesizing, which is about the best we can do from
afar.
Your map request works for certain bounding boxes, but not for others.
It appears to both reliably and repeatedly work on the good bounding
boxes, and reliably and repeatably fail on the bad ones. The layer is a
PostgreSQL layer, so each map-rendering request produces a database
query to retrieve data.
I have never tried DEBUG logging to see if reports database queries, but
if you have control over the database server you can turn on query
logging in the postgresql.conf file. As a fallback you can look at the
map bounding box and synthesize the queries by hand, but that is prone
to error.
Something should be different between the query that results in a good
map and the query that results in a bad map. Do both queries actually
work? Does the data returned look different in any notable way? What
happens?
BTW, what does "mapserv -v" from the command line return?
- Ed
-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Lee Keel
Sent: Thursday, January 17, 2008 6:24 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] mapserver error
Steve,
I can't get shp2img to work. It throws an error for "shared connection
not available". I have tried this with 2 different bounding boxes (one
that works and one that doesn't) and I get the same results. Any
suggestions on this?
This is an IIS only solution. Their sys admins have something serious
against Apache... For some reason. My guess is lack of knowledge.
-LK
________________________________
From: UMN MapServer Users List on behalf of Steve Lime
Sent: Thu 1/17/2008 4:47 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] mapserver error
Shp2img works ok on the mapfile? Does apache work or is this IIS only?
>>> On 1/17/2008 at 3:04 PM, in message
<944DCD961F4CD649BCEBB52E3C929F6501863C4B at usd-am-xch-01.am.trimblecorp.n
et>,
Lee Keel <lee_keel at TRIMBLE.COM> wrote:
> Anyone else got a thought here? Or can tell me where to check the
debug
> logs? I have turned DEBUG 5 in my map file but there is nothing in
the log
> file other than "...... normal execution".
>
> Thanks in advance,
> LK
>
> ________________________________
>
> From: thomas bonfort [mailto:thomas.bonfort at gmail.com]
> Sent: Thu 1/17/2008 2:56 AM
> To: Lee Keel
> Cc: MAPSERVER-USERS at lists.umn.edu
> Subject: Re: [UMN_MAPSERVER-USERS] mapserver error
>
>
>
> strange...
> what version of mapserver are you using?
> can you (temporarily) turn off the angle follow of your labels and
> report if you're still having the same output problems
>
> thomas
>
> On Jan 16, 2008 8:03 PM, Lee Keel <lee_keel at trimble.com> wrote:
>> sorry, I hit enter before I meant to....
>>
>> You can view the blurring problem at:
<http://dev.uai.com:28080/public/blur>
> http://dev.uai.com:28080/public/blur
> <http://dev.uai.com:28080/public/blur.html> .html
>>
>>
>> ________________________________
>>
>> From: Ed McNierney [mailto:ed at topozone.com]
>> Sent: Wed 1/16/2008 12:13 PM
>> To: Lee Keel; MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: RE: [UMN_MAPSERVER-USERS] mapserver error
>>
>>
>>
>> Lee -
>>
>> INTERLACE=ON is not "wrong". Tim is pointing out that if you're
viewing an
> interlaced output image, the first, alternating set of scanlines will
be
> displayed and then your browser will start again at the top of the
image,
> filling in the alternate interlacing lines. This will cause the top
of the
> image to appear complete while the bottom is "blurry". You can see
> variations on these visual artifacts depending on your browser, and
the
> effect is more pronounced over a slow connection.
>>
>> But if the image still looks blurry at the bottom even after you're
certain
> the image has been completely loaded, then this is not your problem.
>>
>> It's hard to diagnose visual problems in text; can you either post
the
> output image or (preferably) a public URL where the image can be
viewed?
>>
>> - Ed
>>
>> Ed McNierney
>> Chief Mapmaker
>> Demand Media / TopoZone.com
>> 73 Princeton Street, Suite 305
>> North Chelmsford, MA 01863
>> ed at topozone.com
>> Phone: +1 (978) 251-4242
>> Fax: +1 (978) 251-1396
>>
>> -----Original Message-----
>> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
On
> Behalf Of Lee Keel
>> Sent: Wednesday, January 16, 2008 1:06 PM
>> To: MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: Re: [UMN_MAPSERVER-USERS] mapserver error
>>
>> Timothy,
>>
>> Here are the OUTPUTFORMAT options I have in my map file. Do they
look
> correct?
>>
>> OUTPUTFORMAT
>> NAME "png"
>> MIMETYPE "image/png"
>> DRIVER "GD/PNG"
>> EXTENSION "png"
>> IMAGEMODE PC256
>> TRANSPARENT FALSE
>> FORMATOPTION "INTERLACE=OFF"
>> END
>>
>> OUTPUTFORMAT
>> NAME "jpg"
>> MIMETYPE "image/jpeg"
>> DRIVER "GD/JPEG"
>> EXTENSION "jpg"
>> IMAGEMODE RGB
>> TRANSPARENT FALSE
>> FORMATOPTION "INTERLACE=OFF"
>> END
>>
>> OUTPUTFORMAT
>> NAME "gif"
>> MIMETYPE "image/gif"
>> DRIVER "GD/gif"
>> EXTENSION "gif"
>> IMAGEMODE PC256
>> TRANSPARENT FALSE
>> FORMATOPTION "INTERLACE=OFF"
>> END
>>
>>
>> ________________________________
>>
>> From: UMN MapServer Users List on behalf of Nolte, Tim
>> Sent: Wed 1/16/2008 11:49 AM
>> To: MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: Re: [UMN_MAPSERVER-USERS] mapserver error
>>
>>
>>
>> One quick thought that I have since you say that a layer image is
>> blurred on the bottom portion is that you have FORMATOPTION
INTERLACE=ON
>> set. This turns on interlacing and sometimes I see that it takes a
few
>> seconds on my mapserver to fully render the image. If you want to
>> prevent this blurring turn that setting off in your Mapfile.
>>
>>
>> ----
>> Timothy J Nolte - tnolte at ilpcs.com
>> Associate Network Planning Engineer
>>
>> iPCS Wireless, Inc.
>> 4717 Broadmoor Ave, Suite G
>> Kentwood, MI 49512
>>
>> Office: 616-656-5163>> PCS: 616-706-2438
>> Fax: 616-554-6484
>> Web: www.ipcswirelessinc.com
>> -----Original Message-----
>> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]
On
>> Behalf Of Lee Keel
>> Sent: Wednesday, January 16, 2008 11:38 AM
>> To: MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: [UMN_MAPSERVER-USERS] mapserver error
>>
>> Hello list. I am having a problem and it is beginning to look like
>> mapserver is behind it somehow. I am using ms4w 2.2.6 to render
>> postgres data to openlayers. Mapserver is configured to use IIS\CGI
>> instead of apache. I am actually having 2 problems, but I am not
sure
>> that they are not related. One problem is that sometimes the server
>> just isn't returning any data for different layers to OpenLayers. I
>> have talked extensively with the OL guys and have come back to the
fact
>> that if I take the URL that is requesting the information from
>> mapserver, then I get: "The specified CGI application misbehaved by
not
>> returning a complete set of HTTP headers." The most consistent way I
>> can reproduce this is to zoom in real close. The second problem I am
>> having is that when I am getting layer images back, they are blurred
on
>> the bottom portion. It looks like someone took a cloth and just
wiped a
>> whiteboard.
>>
>> I am about 5 days late on a deadline to have this up and running, so
I
>> am open to try any suggestions that someone may have.
>>
>> Thanks in advance,
>> Lee
>>
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