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List: mapserver-users
Subject: Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS service?
From: Rahkonen Jukka <jukka.rahkonen () maanmittauslaitos ! fi>
Date: 2023-07-27 21:20:38
Message-ID: AM0PR09MB321967EA01CD7221E4AAAC0DFD01A () AM0PR09MB3219 ! eurprd09 ! prod ! outlook ! com
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Hi,
Mapserver is not clever at all when it finds many overlapping images. It renders them \
all one by one. If the list of images is sorted correctly then the end result is what \
was desired, but with all too much work. See \
https://github.com/MapServer/MapServer/issues/5899. We use two tricks:
1) We have computed the time range of validity for each image and we save the start \
data and end date into two attributes in the tileindex table in a database. Start \
date is the acquisition date of the image, and end date is the date when the last \
pixel of the image gets covered by some newer image. If the requested time is not \
within the range of validity then the image is skipped. Skipping is based on the SQL \
query that is used as DATA for the tileindex layer. 2) Because time is not supported \
as a dimension we have written a small utility that is manipulating the incoming http \
GetCoverage requests before they are sent to Mapserver. The utility converts the time \
subset, for example SUBSET=time("2012-12-31T02:00:00Z") into something like \
"&start_date<2012-12-31T02:00:00Z&end_date>2012-12-31T02:00:00Z. The start_date and \
end_date variables are defined and validated in the mapfile.
As a result Mapserver usually does not get overlapping images from the tileindex so \
it does not need to spend time for multiple rendering either. We have typically about \
10 aerial photos from different times at each place and without the above mentioned \
tweaks the service was all too slow.
-Jukka Rahkonen-
Lähettäjä: MapServer-users <mapserver-users-bounces@lists.osgeo.org> Puolesta \
Marcin Niemyjski via MapServer-users Lähetetty: torstai 27. heinäkuuta 2023 12.26
Vastaanottaja: MapServer Users <mapserver-users@lists.osgeo.org>
Aihe: Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?
Hello Jukka,
Yup I guess that's the case, I assumed that WCS has the same capabilities as WMS when \
it comes to handling time dimension and it would use the default time from mapfile \
while requesting the data. This is my mapserv log file from one getCoverage request \
(very small, that's why It took only 30 sec to process it). It would be great if you \
check it 🙂: https://s3.waw3-1.cloudferro.com/swift/v1/Julien/log2.txt
as you can see mapserver lists all of tile item objects (or at least I guess it does \
haha) which intersect with requested BBOX. So, this is the problem, that's why it \
takes so long to generate file. I've got to pass somehow time parameter to request, \
or at least to query(?) to reduce number of returning shapes.
You mentioned your own supporting time WCS service, is it open source? If not, can \
you give me advice on how to start writing my own? Just some basics ^^
Thanks for your complex answer it helped a lot,
Marcin
________________________________
From: Rahkonen Jukka \
<jukka.rahkonen@maanmittauslaitos.fi<mailto:jukka.rahkonen@maanmittauslaitos.fi>>
Sent: Thursday, July 27, 2023 12:05 AM
To: Marcin Niemyjski <mniemyjski@cloudferro.com<mailto:mniemyjski@cloudferro.com>>; \
MapServer Users <mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>>
Subject: Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?
Hi,
Does the tileindex query " DATA 'geometry from (select * from plua order by "maxCC" \
desc) " return several images from the requested BBOX?
I know that MapServer WCS can be fast and we have also a demo at \
https://beta-karttakuva.maanmittauslaitos.fi/demo/ortokuvat_ja_korkeusmallit/#15.05/67.01553/27.16873
but unfortunately the user interface is only in Finnish. The source images (maybe 10 \
TB or so) are GeoTIFFs and they are not in the cloud. The time for downloading a \
small GetCoverage response as GeoTIFF seems to take around 400 milliseconds. We had \
to write a small service that makes our WCS service to support time as a dimension \
because MapServer does not support it with WCS \
https://www.mail-archive.com/mapserver-users@lists.osgeo.org/msg26265.html.
-Jukka Rahkonen-
Lähettäjä: MapServer-users \
<mapserver-users-bounces@lists.osgeo.org<mailto:mapserver-users-bounces@lists.osgeo.org>> \
Puolesta Marcin Niemyjski via MapServer-users Lähetetty: keskiviikko 26. heinäkuuta \
2023 15.06
Vastaanottaja: MapServer Users \
<mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>>
Aihe: Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?
Hi Seth,
as you suggested, I've added the Extent parameter to all of my layers, and it \
resulted in decreasing time to 5m33.534s. But still, it's quite a lot of time for \
generating 1.5 MiB file.
Any other suggestions?
Maybe there is something wrong with projection so beyond just serving data mapserver \
have to reproject it multiple times? (more than one time by using tilesrs option)?
Thanks,
Marcin
________________________________
From: Seth G <sethg@geographika.co.uk<mailto:sethg@geographika.co.uk>>
Sent: Wednesday, July 26, 2023 12:58 PM
To: Marcin Niemyjski <mniemyjski@cloudferro.com<mailto:mniemyjski@cloudferro.com>>; \
MapServer Users <mapserver-users@lists.osgeo.org<mailto:mapserver-users@lists.osgeo.org>>
Subject: Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?
Hi Marcin,
As a first test I'd recommend adding in EXTENTs to all your layers (and ensuring they \
are correct):
EXTENT 1334552.857598 5342648.587634 4715044.821842 7547620.486088
If these are missing MapServer will often try and calculate these from the datasource \
automatically. Depending on the request type this calculation could be made multiple \
times.
Seth
--
web:https://geographika.net<https://geographika.net/> & \
https://mapserverstudio.net<https://mapserverstudio.net/>
twitter: @geographika
On Wed, Jul 26, 2023, at 11:53 AM, Marcin Niemyjski via MapServer-users wrote:
Hello,
I have a problem, Namely, I have created a WCS and here is its mapfile:
https://pastecode.io/s/6v3qfssb
For a better understanding, here is a view of the tileindex through which the data is \
served:
https://pasteboard.co/ydgvDiqxz4lf.png
I am connecting to files located in a private bucket, so I am using vsis3.
The WMS loads quite fast, but the issue arises with the time it takes to generate a \
requested WCS tile:
https://pasteboard.co/8G8uF41jqgHc.png
It takes almost 5 minutes to generate the tile, and the received data is 1.5 MiB \
(which is it's actual size).
Additionally, I am sending you URLs to sample data:
https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T34UFD_20230708T093549_TCI_60m.jp2
https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T37TCN_20220605T083559_TCI_60m.jp2
The case is - how to speed it up? Am I making any goofy mistakes?
I would be grateful for any recommendations or if you notice any errors, I might be \
making :)
Best,
Marcin
_______________________________________________
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<p class="MsoNormal"><span \
style="mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p> <p \
class="MsoNormal"><span \
style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Mapserver is \
not clever at all when it finds many overlapping images. It renders them all one by \
one. If the list of images is sorted correctly then the end result is what was \
desired, but with all too much work. See <a \
href="https://github.com/MapServer/MapServer/issues/5899"> \
https://github.com/MapServer/MapServer/issues/5899</a>.<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">We use two \
tricks:<br> 1) We have computed the time range of validity for each image and we save \
the start data and end date into two attributes in the tileindex table in a database. \
Start date is the acquisition date of the image, and end date is the date when the \
last pixel of the image gets covered by some newer image. If the requested time is \
not within the range of validity then the image is skipped. Skipping is based on the \
SQL query that is used as DATA for the tileindex layer.<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">2) Because \
time is not supported as a dimension we have written a small utility that is \
manipulating the incoming http GetCoverage requests before they are sent to \
Mapserver. The utility converts the time subset, for example \
SUBSET=time("2012-12-31T02:00:00Z") into something like \
"&start_date<2012-12-31T02:00:00Z&end_date>2012-12-31T02:00:00Z. \
The start_date and end_date variables are defined and validated in the \
mapfile.<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" \
style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">As a result \
Mapserver usually does not get overlapping images from the tileindex so it does not \
need to spend time for multiple rendering either. We have typically about 10 aerial \
photos from different times at each place and without the above mentioned tweaks the \
service was all too slow.<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="mso-fareast-language:EN-US">-Jukka \
Rahkonen-<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>Lähettäjä:</b> MapServer-users \
<mapserver-users-bounces@lists.osgeo.org> <b>Puolesta </b>Marcin Niemyjski via \
MapServer-users<br> <b>Lähetetty:</b> torstai 27. heinäkuuta 2023 12.26<br>
<b>Vastaanottaja:</b> MapServer Users <mapserver-users@lists.osgeo.org><br>
<b>Aihe:</b> Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?<o:p></o:p></p> </div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Hello \
Jukka,<o:p></o:p></span></p> </div>
<div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Yup I guess that's \
the case, I assumed that WCS has the same capabilities as WMS when it comes to \
handling time dimension and it would use the default time from mapfile while \
requesting the data.<br> This is my mapserv log file from one getCoverage request \
(very small, that's why It took only 30 sec to process it). It would be great if you \
check it </span><span style="font-size:12.0pt;font-family:"Segoe UI \
Emoji",sans-serif;color:black">🙂</span><span \
style="font-size:12.0pt;color:black">:<o:p></o:p></span></p> </div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><a \
href="https://s3.waw3-1.cloudferro.com/swift/v1/Julien/log2.txt">https://s3.waw3-1.cloudferro.com/swift/v1/Julien/log2.txt</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">as you can see \
mapserver lists all of tile item objects (or at least I guess it does haha) which \
intersect with requested BBOX. So, this is the problem, that's why it takes so \
long to generate file. I've got to pass somehow time parameter to request, or at \
least to query(?) to reduce number of returning shapes.<o:p></o:p></span></p> </div>
<div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">You mentioned your \
own supporting time WCS service, is it open source? If not, can you give me advice on \
how to start writing my own? Just some basics ^^<o:p></o:p></span></p> </div>
<div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Thanks for your \
complex answer it helped a lot, <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black">Marcin<o:p></o:p></span></p> </div>
<p class="MsoNormal"><span \
style="font-size:12.0pt;color:black"><o:p> </o:p></span></p> </div>
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<div id="divRplyFwdMsg">
<p class="MsoNormal"><b><span style="color:black">From:</span></b><span \
style="color:black"> Rahkonen Jukka <<a \
href="mailto:jukka.rahkonen@maanmittauslaitos.fi">jukka.rahkonen@maanmittauslaitos.fi</a>><br>
<b>Sent:</b> Thursday, July 27, 2023 12:05 AM<br>
<b>To:</b> Marcin Niemyjski <<a \
href="mailto:mniemyjski@cloudferro.com">mniemyjski@cloudferro.com</a>>; MapServer \
Users <<a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
<b>Subject:</b> Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up \
WCS service?</span> <o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="xmsonormal">Hi,<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US">Does the tileindex query " DATA 'geometry \
from (select * from plua order by "maxCC" desc) " return several images \
from the requested BBOX?</span><o:p></o:p></p> <p class="xmsonormal"><span \
lang="EN-US"> </span><o:p></o:p></p> <p class="xmsonormal"><span lang="EN-US">I \
know that MapServer WCS can be fast and we have also a demo at <a \
href="https://beta-karttakuva.maanmittauslaitos.fi/demo/ortokuvat_ja_korkeusmallit/#15.05/67.01553/27.16873">
https://beta-karttakuva.maanmittauslaitos.fi/demo/ortokuvat_ja_korkeusmallit/#15.05/67.01553/27.16873</a></span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US">but unfortunately the user interface is \
only in Finnish. The source images (maybe 10 TB or so) are GeoTIFFs and they are not \
in the cloud. The time for downloading a small GetCoverage response as GeoTIFF seems \
to take around 400 milliseconds. We had to write a small service that makes our WCS \
service to support time as a dimension because MapServer does not support it with WCS \
<a href="https://www.mail-archive.com/mapserver-users@lists.osgeo.org/msg26265.html"> \
https://www.mail-archive.com/mapserver-users@lists.osgeo.org/msg26265.html</a>.</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US">-Jukka Rahkonen-</span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="xmsonormal"><span lang="EN-US"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="xmsonormal"><b>Lähettäjä:</b> MapServer-users <<a \
href="mailto:mapserver-users-bounces@lists.osgeo.org">mapserver-users-bounces@lists.osgeo.org</a>>
<b>Puolesta </b>Marcin Niemyjski via MapServer-users<br>
<b>Lähetetty:</b> keskiviikko 26. heinäkuuta 2023 15.06<br>
<b>Vastaanottaja:</b> MapServer Users <<a \
href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
<b>Aihe:</b> Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up WCS \
service?<o:p></o:p></p> </div>
</div>
<p class="xmsonormal"> <o:p></o:p></p>
<div>
<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Hi \
Seth,</span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black"> </span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span style="font-size:12.0pt;color:black">as you suggested, \
I've added the Extent parameter to all of my layers, and it resulted in decreasing \
time to 5m33.534s. But still, it's quite a lot of time for generating 1.5 MiB \
file.</span><o:p></o:p></p> </div>
<div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black"> </span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Any other \
suggestions?<br> Maybe there is something wrong with projection so beyond just \
serving data mapserver have to reproject it multiple times? (more than one time by \
using tilesrs option)?</span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black"> </span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black">Thanks,</span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black">Marcin</span><o:p></o:p></p> </div>
<div id="x_Signature">
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<p class="xmsonormal"> <o:p></o:p></p>
</div>
</div>
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<hr size="1" width="98%" align="center">
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<div id="x_divRplyFwdMsg">
<p class="xmsonormal"><b><span style="color:black">From:</span></b><span \
style="color:black"> Seth G <<a \
href="mailto:sethg@geographika.co.uk">sethg@geographika.co.uk</a>><br> \
<b>Sent:</b> Wednesday, July 26, 2023 12:58 PM<br> <b>To:</b> Marcin Niemyjski <<a \
href="mailto:mniemyjski@cloudferro.com">mniemyjski@cloudferro.com</a>>; MapServer \
Users <<a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a>><br>
<b>Subject:</b> Re: [MapServer-users] Speed of WMS vs Speed of WCS; How to speed up \
WCS service?</span> <o:p></o:p></p>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="xmsonormal">Hi Marcin,<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">As a first test I'd recommend adding in EXTENTs to all your \
layers (and ensuring they are correct):<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">EXTENT 1334552.857598 5342648.587634 4715044.821842 \
7547620.486088<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">If these are missing MapServer will often try and calculate \
these from the datasource automatically. Depending on the request type this \
calculation could be made multiple times.<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">Seth<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div id="x_x_sig62266145">
<div>
<p class="xmsonormal">--<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">web:<a \
href="https://geographika.net/">https://geographika.net</a> & <a \
href="https://mapserverstudio.net/">https://mapserverstudio.net</a><o:p></o:p></p> \
</div> <div>
<p class="xmsonormal">twitter: @geographika<o:p></o:p></p>
</div>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">On Wed, Jul 26, 2023, at 11:53 AM, Marcin Niemyjski via \
MapServer-users wrote:<o:p></o:p></p> </div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt" id="x_x_qt">
<div>
<p class="xmsonormal">Hello,<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">I have a problem, Namely, I have created a WCS and here is its \
mapfile:<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><a \
href="https://pastecode.io/s/6v3qfssb">https://pastecode.io/s/6v3qfssb</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">For a better understanding, here is a view of the tileindex \
through which the data is served:<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><a \
href="https://pasteboard.co/ydgvDiqxz4lf.png">https://pasteboard.co/ydgvDiqxz4lf.png</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">I am connecting to files located in a private bucket, so I am \
using vsis3.<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">The WMS loads quite fast, but the issue arises with the time it \
takes to generate a requested WCS tile:<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <a \
href="https://pasteboard.co/8G8uF41jqgHc.png">https://pasteboard.co/8G8uF41jqgHc.png</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">It takes almost 5 minutes to generate the tile, and the \
received data is 1.5 MiB (which is it's actual size).<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">Additionally, I am sending you URLs to sample \
data:<o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><a \
href="https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T34UFD_20230708T093549_TCI \
_60m.jp2">https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T34UFD_20230708T093549_TCI_60m.jp2</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><a \
href="https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T37TCN_20220605T083559_TCI \
_60m.jp2">https://s3.waw3-1.cloudferro.com/swift/v1/Julien/Data/T37TCN_20220605T083559_TCI_60m.jp2</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:12.0pt;color:black">The case is - how to \
speed it up? Am I making any goofy mistakes?</span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal">I would be grateful for any recommendations or if you notice \
any errors, I might be making :)<o:p></o:p></p> </div>
<div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black"> </span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black">Best,</span><o:p></o:p></p> </div>
<div>
<p class="xmsonormal"><span \
style="font-size:12.0pt;color:black">Marcin</span><o:p></o:p></p> </div>
</div>
<div>
<p class="xmsonormal">_______________________________________________<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal">MapServer-users mailing list<o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><a \
href="mailto:MapServer-users@lists.osgeo.org">MapServer-users@lists.osgeo.org</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><a \
href="https://lists.osgeo.org/mailman/listinfo/mapserver-users">https://lists.osgeo.org/mailman/listinfo/mapserver-users</a><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
</blockquote>
<div>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
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