[mapserver-users] RE: Problems with Query Template (Chameleon)

[Lime, Steve D (DNR)]

Not a Chameleon user so I may not be of much help. Any errors being logged? 
What does the template file look like? It’s possible that ms4w_2.3.1’s 
MapServer did not require a magic string be on the first line of the template. 
In new versions it is required. Basically the first line of a template must 
contain the string “MapServer Template”. Typically you’d put that in a HTML 
comment, e.g.:


...template follows...

That’s my first guess anyway.

Steve


From: mapserver-users-boun...@lists.osgeo.org 
[mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Andy Hird
Sent: Friday, April 08, 2011 3:00 AM
To: mapserver-users@lists.osgeo.org
Subject: [mapserver-users] Problems with Query Template (Chameleon)

Hi there  - really need some help if you can please regarding Template Query 
feature, and I have googled to exhaustion :-/

Background:
I have an existing Map file referencing MapInfo Tab files running under 
ms4w_2.3.1 & chameleon_ms4w-2.4.1
I have installed ms4w - V3.0.1 and chameleon V2.6.0
Copied my Map file across and made the necessary adjustments to get it working.

However when using the Query Widget (info of layers at mouse click) against 
MapInfo Layers it is no longer returning results, and yet it did previously.
My knowledge is not that great in php etc – but I suspect that its requiring a 
dbf rather than MapInfo Tab as it does work with a shp, dbf set of files.

Can Anyone help please as I really struggling – ideally I just want to use the 
old widget.

However If someone can provide example of placing a button on a html page that 
would call query functionality that would be very helpful too.

Thanks in advance

Andy




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Re: [mapserver-users] RE: making POINT with SQL

[Rahkonen Jukka]

Hi,
 
Your %data% looks rather similar than the example. You seem to miss
"using unique", try what happens if you add it.
 
-Jukka Rahkonen-
 
 
Juan Carlos Monestel  wrote:
 
> Hi Jukka,

>  This is the error in the debug file:

  Warning: [MapServer Error]: msDrawMap(): Failed to draw layer named
'test'. in /xxx/xx/xx/xxx.php on line 992

Warning: [MapServer Error]: msPOSTGISLayerParseData(): Error parsing
POSTGIS data variable. Must contain 'geometry_column from table_name' or
'geom from (subselect) as foo' (couldnt find ' from '). More help: Error
with POSTGIS data variable. You specified '%data%'. Standard ways of
specifiying are : (1) 'geometry_column from geometry_table' (2)
'geometry_column from (sub query) as foo using unique column name using
SRID=srid#' Make sure you put in the 'using unique column name' and
'using SRID=#' clauses in. For more help, please see
http://postgis.refractions.net/documentation/
  Mappostgis.c - version
of Jan 23/2004. in
/var/www/html/dev/jmonestel/trunk/app/lib/mapaMapscriptF.class.php on
line 992




This is my Layer:
LAYER
NAME test
TYPE POINT
STATUS ON
connectiontype POSTGIS
connection "dbname= user=x host=x port=x"
data "%data%"
projection
"proj=latlong"
"ellps=WGS84"
"datum=WGS84"
end
CLASS
 NAME "juan"
 STYLE
SYMBOL 'juan2'
COLOR 0 119 255
SIZE 2
 END
END
END # layer




My %data% is "geo_coordenada FROM (select cod_referencia as oid,
geo_coordenada, ind_cor from ponto_referencia where cod_referencia = 1 )
as map using SRID=4326"
The SQL brings me an geo info
("010120E61079E9263108DC42C08716D9CEF75338C0") that in text is =
"POINT(-37.719 -24.328)"











-Original Message-
From: Rahkonen Jukka [mailto:jukka.rahko...@mmmtike.fi
 ]
Sent: Thu 4/7/2011 3:35 PM
To: Juan Carlos Monestel; mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] RE: making POINT with SQL

Hi,

First add DEBUG 5, it may generate some interesting information for you
into ms_errorfile. Next, comment out maxscale to be sure it is not
preventing the rendering. Change it to MAXSCALEDENOM later, maxscale is
not to be used any more. Add PROJECTION into your LAYER for getting more
control on what is happening. And tell us the exact request you were
using. Very often a blank map without any errors means that Mapserver
does not find data from the requested map window, and very often it is
because of some misconfiguration or misunderstanding with projections.

-Jukka Rahkonen-

Juan Carlos Monestel wrote:


> Hi
> it is not drawing and no error occurs




-Original Message-
From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us
 ]
Sent: Thu 4/7/2011 2:43 PM
To: Juan Carlos Monestel; mapserver-users@lists.osgeo.org
Subject: RE: making POINT with SQL

What does "not working" mean? Steve

From: mapserver-users-boun...@lists.osgeo.org
[mailto:mapserver-users-boun...@lists.osgeo.org
 ] On Behalf Of Juan
Carlos Monestel
Sent: Thursday, April 07, 2011 12:04 PM
To: mapserver-users@lists.osgeo.org
Subject: [mapserver-users] making POINT with SQL


Hello
I'm trying to make an POINT in the map but it's not working

this is my Layer
layer
name "ponto"
connectiontype POSTGIS
connection "dbname= user=x host=x port=x"
data "geo_info from table"
type point
status on
metadata
tile_source "nocache"
end
maxscale 301
class
style
size 4
symbol "circulo"
color 0 0 0
end
style
size 1
symbol "circulo"
color 255 255 255
end
end
end


The SQL brings me an geo info
("010120E61079E9263108DC42C08716D9CEF75338C0") that in text is =
"POINT(-37.719 -24.328)"


Any Ideas ?






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RE: [mapserver-users] RE: making POINT with SQL

[Juan Carlos Monestel]

Hi Jukka,

This is the error in the debug file:


Warning: [MapServer Error]: msDrawMap(): Failed to draw layer named 'test'. in 
/xxx/xx/xx/xxx.php on line 992

Warning: [MapServer Error]: msPOSTGISLayerParseData(): Error parsing POSTGIS 
data variable. Must contain 'geometry_column from table_name' or 'geom from 
(subselect) as foo' (couldnt find ' from '). More help: Error with POSTGIS data 
variable. You specified '%data%'. Standard ways of specifiying are : (1) 
'geometry_column from geometry_table' (2) 'geometry_column from (sub query) as 
foo using unique column name using SRID=srid#' Make sure you put in the 'using 
unique column name' and 'using SRID=#' clauses in. For more help, please see 
http://postgis.refractions.net/documentation/ Mappostgis.c - version of Jan 
23/2004. in /var/www/html/dev/jmonestel/trunk/app/lib/mapaMapscriptF.class.php 
on line 992




This is my Layer:
LAYER
NAME test
TYPE POINT
STATUS ON
connectiontype POSTGIS
connection "dbname= user=x host=x port=x"
data "%data%"
projection
"proj=latlong"
"ellps=WGS84"
"datum=WGS84"
end
CLASS
 NAME "juan"
 STYLE
SYMBOL 'juan2'
COLOR 0 119 255
SIZE 2
 END
END
END # layer




My %data% is "geo_coordenada FROM (select cod_referencia as oid, 
geo_coordenada, ind_cor from ponto_referencia where cod_referencia = 1 ) as map 
using SRID=4326"
The SQL brings me an geo info 
("010120E61079E9263108DC42C08716D9CEF75338C0") that in text is = 
"POINT(-37.719 -24.328)"











-Original Message-
From: Rahkonen Jukka [mailto:jukka.rahko...@mmmtike.fi]
Sent: Thu 4/7/2011 3:35 PM
To: Juan Carlos Monestel; mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] RE: making POINT with SQL 
 
Hi,

First add DEBUG 5, it may generate some interesting information for you into 
ms_errorfile. Next, comment out maxscale to be sure it is not preventing the 
rendering. Change it to MAXSCALEDENOM later, maxscale is not to be used any 
more. Add PROJECTION into your LAYER for getting more control on what is 
happening. And tell us the exact request you were using. Very often a blank map 
without any errors means that Mapserver does not find data from the requested 
map window, and very often it is because of some misconfiguration or 
misunderstanding with projections.

-Jukka Rahkonen-

Juan Carlos Monestel wrote:

 
> Hi 
> it is not drawing and no error occurs




-Original Message-
From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us]
Sent: Thu 4/7/2011 2:43 PM
To: Juan Carlos Monestel; mapserver-users@lists.osgeo.org
Subject: RE: making POINT with SQL 
 
What does "not working" mean? Steve

From: mapserver-users-boun...@lists.osgeo.org 
[mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Juan Carlos 
Monestel
Sent: Thursday, April 07, 2011 12:04 PM
To: mapserver-users@lists.osgeo.org
Subject: [mapserver-users] making POINT with SQL


Hello
I'm trying to make an POINT in the map but it's not working

this is my Layer
layer
name "ponto"
connectiontype POSTGIS
connection "dbname= user=x host=x port=x"
data "geo_info from table"
type point
status on
metadata
tile_source "nocache"
end
maxscale 301
class
style
size 4
symbol "circulo"
color 0 0 0
end
style
size 1
symbol "circulo"
color 255 255 255
end
end
end


The SQL brings me an geo info 
("010120E61079E9263108DC42C08716D9CEF75338C0") that in text is = 
"POINT(-37.719 -24.328)"


Any Ideas ?





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Re: [mapserver-users] fastcgi mode with raster layer?

[Rahkonen Jukka]

Hi,

I have a feeling that there is a difference also when the raster layer is used 
through a big tileindex which is collecting thousands or tens of thousands of 
images. I do not have any reliable numbers available right now, though.

thomas bonfort wrote:


> Martin,
> fastcgi will essentially give you speedups in these two cases:
>  * with slow-to-open data connections (i.e. oracle, some gdal/ogr
> datasources?) if you use "CLOSE_CONNECTION=DEFER"
>  * and/or when the cost of creation of a process becomes non
> negligible compared to the time that the mapserv process will actually
> be running for each request.

> basically, there is little advantage of using fastcgi if your map
> draws are heavy, or if you are not using oracle connections.

> YMMV,

--
> thomas

> On Mon, Apr 11, 2011 at 19:22, Martin Ouellet  wrote:
>> I've just activated the fastcgi mode (RHEL5 - Mapserver 5.6.3 - Httpd) on my
>> server.  is it normal to have no speed increase for a raster layer?
>> Does the fastcgi mode is optimized mainly for database layers as Oracle or
>> PostGIS?
>> thank you in advance.
>> MartinOuellet
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Re: [mapserver-users] box substitution for ogr layers

[Frederic Junod]

On Mon, Apr 11, 2011 at 3:56 PM, Frank Warmerdam  wrote:
> On 11-04-11 06:01 AM, Frederic Junod wrote:
>>
>> Hello,
>>
>> Is it possible to have a !BOX! substitution for an OGR layer
>> (CONNECTION value) ? The box substitution seems only available to
>> postgis layers.
>>
>> What I'm trying to have is something like:
>>
>> MAP
>>   ...
>>   LAYER
>>     NAME "world_borders"
>>     TYPE POLYGON
>>     CONNECTIONTYPE OGR
>>     CONNECTION "http://www.example.com/world_borders.json?bbox=!BOX!";
>>     ...
>>   END
>> END
>
> fredj,
>
> This seems like a plausible thing to add but I'm hesitant to do it at
> this late point in the release cycle.  Could you file an enhancement
> ticket with the request?

http://trac.osgeo.org/mapserver/ticket/3827

Regards,

fredj


-- 
Frédéric Junod
Camptocamp SA
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Re: [mapserver-users] fastcgi mode with raster layer?

[thomas bonfort]

Martin,
fastcgi will essentially give you speedups in these two cases:
 * with slow-to-open data connections (i.e. oracle, some gdal/ogr
datasources?) if you use "CLOSE_CONNECTION=DEFER"
 * and/or when the cost of creation of a process becomes non
negligible compared to the time that the mapserv process will actually
be running for each request.

basically, there is little advantage of using fastcgi if your map
draws are heavy, or if you are not using oracle connections.

YMMV,

--
thomas

On Mon, Apr 11, 2011 at 19:22, Martin Ouellet  wrote:
> I've just activated the fastcgi mode (RHEL5 - Mapserver 5.6.3 - Httpd) on my
> server.  is it normal to have no speed increase for a raster layer?
> Does the fastcgi mode is optimized mainly for database layers as Oracle or
> PostGIS?
> thank you in advance.
> MartinOuellet
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Re: [mapserver-users] fastcgi mode with raster layer?

[Alan Boudreault]

Martin, you'll have to set explicitly the CONNECTION POOL setting to get a 
persistant DB connection for a specific layer. See:

http://mapserver.org/mapfile/layer.html (search for pooling)

Alan


On April 11, 2011 01:22:11 pm Martin Ouellet wrote:
> I've just activated the fastcgi mode (RHEL5 - Mapserver 5.6.3 - Httpd) on
> my server.  is it normal to have no speed increase for a raster layer?
> 
> Does the fastcgi mode is optimized mainly for database layers as Oracle or
> PostGIS?
> 
> thank you in advance.
> 
> MartinOuellet

-- 
Alan Boudreault
Mapgears
http://www.mapgears.com
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[mapserver-users] fastcgi mode with raster layer?

[Martin Ouellet]

I've just activated the fastcgi mode (RHEL5 - Mapserver 5.6.3 - Httpd) on my
server.  is it normal to have no speed increase for a raster layer?

Does the fastcgi mode is optimized mainly for database layers as Oracle or
PostGIS?

thank you in advance.

MartinOuellet
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Re: [mapserver-users] box substitution for ogr layers

[Frank Warmerdam]

On 11-04-11 06:01 AM, Frederic Junod wrote:

Hello,

Is it possible to have a !BOX! substitution for an OGR layer
(CONNECTION value) ? The box substitution seems only available to
postgis layers.

What I'm trying to have is something like:

MAP
   ...
   LAYER
 NAME "world_borders"
 TYPE POLYGON
 CONNECTIONTYPE OGR
 CONNECTION "http://www.example.com/world_borders.json?bbox=!BOX!";
 ...
   END
END


fredj,

This seems like a plausible thing to add but I'm hesitant to do it at
this late point in the release cycle.  Could you file an enhancement
ticket with the request?

Best regards,
--
---+--
I set the clouds in motion - turn up   | Frank Warmerdam, warmer...@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush| Geospatial Programmer for Rent

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Re: [mapserver-users] MapServer 6: ESRI Grid display with KMZ output

[Yewondwossen Assefa]

Hi,

 If you are willing to share a sample map file + this particular format 
file, I can look into the kmz output issue.
If that is the case, wither send me the sample or open a trac bug and 
attche the data. Please assign the bug to me (assefa).


Assefa

On 08/04/2011 8:09 AM, Cécile Alfred wrote:

Hi,

I try to use Mapserver 6 beta 5 to generate kmz output with several 
type of input data (geotiff, shape and esri ascii grid):
 It is OK with geotiff and shape but there is no result with grd 
(empty image in temp).

If I try to generate png output it's OK for all.

Thank you for help
Kelly


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--

Assefa Yewondwossen
Software Analyst

Email: yass...@dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925



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[mapserver-users] box substitution for ogr layers

[Frederic Junod]

Hello,

Is it possible to have a !BOX! substitution for an OGR layer
(CONNECTION value) ? The box substitution seems only available to
postgis layers.

What I'm trying to have is something like:

MAP
  ...
  LAYER
NAME "world_borders"
TYPE POLYGON
CONNECTIONTYPE OGR
CONNECTION "http://www.example.com/world_borders.json?bbox=!BOX!";
...
  END
END

Regards,
fredj


-- 
Frédéric Junod
Camptocamp SA
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Re: VS: [mapserver-users] Mapserver search performance

[Varun saraf]

Thanks a lot for the quick reply. I will give it a try.

On Mon, Apr 11, 2011 at 1:50 PM, Rahkonen Jukka
 wrote:
> Hi,
>
> Shptree will help and stopwatch will tell you how much. Without spatial
> index Mapserver needs to go through the whole shapefile every time. Have
> a try, it will not take very many seconds to run shptree. Make different
> requests, take times with and without .qix files and you will some
> numbers. Change the requests and request order (query 1 with
> .qix/withour qix, query 2 without .qix/with .qix) so that you can see if
> you are actually testing the speed of disk access and memory cache
> access and not the effect of having spatial index.
> By adding DEBUG 5 for your layer you don't need stopwatch but you'll get
> timings into ms_errorfile.
>
>
> -Jukka Rahkonen-
>
> Varun saraf wrote:
>
>>
>> Hello Everyone,
>>
>> I have programmed a GIS application using Mapserver, Google maps and
>> Tilecache. The functionality of this GIS application is to extract the
>> data (from the dbf file) for all features (Points) within a randomly
>> drawn user shape and doing some statistical operation on that data. I
>> use an NQUERY mode with MAPSHAPE attribute to get all the data for the
>> user drawn shape. Mapserver takes aout 5-10 seconds for a small shape
>> (a couple of square miles) but as the shape gets bigger (hundreds of
>> square miles), the time taken to fetch all data related to the
>> features/points lying in the shape grows exponentially (Upto 2 hours
>> for some shapes). Until now, we were restricting the maximum area a
>> shape can have but we have to get rid of that. Is there a way to
>> improve the performance in any way? Will SHPTREE work for this
>> purpose? The features are currently points only but we may move to
>> polygons in future. We use the .shp files for the shapes. Is it
>> advantageous to move to a database instead? If yes, what database
>> works best?
>>
>> What I did notice is that for any given request to mapserver, however
>> large the shape, the CPU utilization never crosses 12%. Can we improve
>> performance by increasing the RAM or maybe move to a solid state hard
>> drive? There is also the possibility of moving this application to
>> Cloud computing. Anything that will improve the performance actually.
>> Can someone point me in the right direction as to what might be the
>> current bottleneck?
>>
>> T current setup is on windows and uses MS4W on an Apache server.
>>
>> Thanks,
>> Varun
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Re: [mapserver-users] Tag SYMBOL -> CENTER/ORIGIN

[thomas bonfort]

No, it was not implemented, and is on hold until someone funds it.

regards,
thomas

On Mon, Apr 11, 2011 at 10:54, tommaso  wrote:
> Hallo List,
> in the Document http://mapserver.org/trunk/development/rfc/ms-rfc-45.html is
> mentioned the tag CENTER / ORIGIN for SYMBOL:  was this feature already
> implemented? if yes, in which Mapserver version?
>
> Greetings,
> Tommaso
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[mapserver-users] Tag SYMBOL -> CENTER/ORIGIN

[tommaso]

Hallo List,
in the Document
http://mapserver.org/trunk/development/rfc/ms-rfc-45.html is mentioned
the tag CENTER / ORIGIN for SYMBOL:  was this feature already
implemented? if yes, in which Mapserver version?

Greetings,
Tommaso
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VS: [mapserver-users] Mapserver search performance

[Rahkonen Jukka]

Hi,

Shptree will help and stopwatch will tell you how much. Without spatial
index Mapserver needs to go through the whole shapefile every time. Have
a try, it will not take very many seconds to run shptree. Make different
requests, take times with and without .qix files and you will some
numbers. Change the requests and request order (query 1 with
.qix/withour qix, query 2 without .qix/with .qix) so that you can see if
you are actually testing the speed of disk access and memory cache
access and not the effect of having spatial index.
By adding DEBUG 5 for your layer you don't need stopwatch but you'll get
timings into ms_errorfile.


-Jukka Rahkonen-

Varun saraf wrote:

> 
> Hello Everyone,
> 
> I have programmed a GIS application using Mapserver, Google maps and
> Tilecache. The functionality of this GIS application is to extract the
> data (from the dbf file) for all features (Points) within a randomly
> drawn user shape and doing some statistical operation on that data. I
> use an NQUERY mode with MAPSHAPE attribute to get all the data for the
> user drawn shape. Mapserver takes aout 5-10 seconds for a small shape
> (a couple of square miles) but as the shape gets bigger (hundreds of
> square miles), the time taken to fetch all data related to the
> features/points lying in the shape grows exponentially (Upto 2 hours
> for some shapes). Until now, we were restricting the maximum area a
> shape can have but we have to get rid of that. Is there a way to
> improve the performance in any way? Will SHPTREE work for this
> purpose? The features are currently points only but we may move to
> polygons in future. We use the .shp files for the shapes. Is it
> advantageous to move to a database instead? If yes, what database
> works best?
> 
> What I did notice is that for any given request to mapserver, however
> large the shape, the CPU utilization never crosses 12%. Can we improve
> performance by increasing the RAM or maybe move to a solid state hard
> drive? There is also the possibility of moving this application to
> Cloud computing. Anything that will improve the performance actually.
> Can someone point me in the right direction as to what might be the
> current bottleneck?
> 
> T current setup is on windows and uses MS4W on an Apache server.
> 
> Thanks,
> Varun
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Re: [mapserver-users] Transparency of overlapping PNG-symbols [solved]

[Stephan Holl]

Hello thomas,

thomas bonfort , [20110411 - 09:41:54]

> Ok, thanks.
> could you check the same mapfile with GD on mapserver 6.0 to see if
> the issue still exists?

We will do so when we have set up a MS6-Box, which will be the case
soon since my collegue björn is going to package MS6 shortly in the
future. 

Best
Stephan

> 
> thomas
> 
> On Mon, Apr 11, 2011 at 09:39, Stephan Holl
>  wrote:
> > Hello thomas,
> >
> > thomas bonfort , [20110408 - 16:52:53]
> >
> >> Given the artifact, I'd say that you are using the GD renderer. Are
> >> you sure it's the AGG one that is being selected when you create
> >> that image?
> >
> > At least I was, yes, but after looking at the _right_ mapfile it was
> > missing the AGG-rendering-options.
> >
> > setting the following helps.
> >  IMAGETYPE aggpng
> >
> >  #8bit png, supports transparency.
> >  OUTPUTFORMAT
> >     NAME aggpng
> >     DRIVER AGG/PNG
> >     MIMETYPE "image/png"
> >     ## transparency only with RGBA Image Mode
> >     ## mapserver had to be compiled -with-experimental-png
> >     IMAGEMODE RGBA
> >     EXTENSION "png"
> >     FORMATOPTION "QUANTIZE_FORCE=ON"
> >     FORMATOPTION "QUANTIZE_COLORS=256"
> >     FORMATOPTION "QUANTIZE_NEW=ON"
> >     TRANSPARENT ON
> >  END
> >
> > Best regards
> >
> >        Stephan
> >
> >
> >> 2011/4/8 Lime, Steve D (DNR) :
> >> > Can you share the batnight.png file? Any difference if you remove
> >> > "TRANSPARENT 0"? It shouldn't have any effect since transparency
> >> > is picked up from the pixmap. By chance does this work ok in 6.0?
> >> >
> >> > Steve
> >
> > --
> > Stephan Holl  | Tel.: +49 (0)541-33 508
> > 3663 Intevation GmbH, Neuer Graben 17, 49074 OS  |  AG Osnabrück -
> > HR B 18998 Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr.
> > Jan-Oliver Wagner
> >



-- 
Stephan Holl  | Tel.: +49 (0)541-33 508 3663
Intevation GmbH, Neuer Graben 17, 49074 OS  |  AG Osnabrück - HR B 18998
Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner


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Re: [mapserver-users] Transparency of overlapping PNG-symbols [solved]

[thomas bonfort]

Ok, thanks.
could you check the same mapfile with GD on mapserver 6.0 to see if
the issue still exists?

thomas

On Mon, Apr 11, 2011 at 09:39, Stephan Holl  wrote:
> Hello thomas,
>
> thomas bonfort , [20110408 - 16:52:53]
>
>> Given the artifact, I'd say that you are using the GD renderer. Are
>> you sure it's the AGG one that is being selected when you create that
>> image?
>
> At least I was, yes, but after looking at the _right_ mapfile it was
> missing the AGG-rendering-options.
>
> setting the following helps.
>  IMAGETYPE aggpng
>
>  #8bit png, supports transparency.
>  OUTPUTFORMAT
>     NAME aggpng
>     DRIVER AGG/PNG
>     MIMETYPE "image/png"
>     ## transparency only with RGBA Image Mode
>     ## mapserver had to be compiled -with-experimental-png
>     IMAGEMODE RGBA
>     EXTENSION "png"
>     FORMATOPTION "QUANTIZE_FORCE=ON"
>     FORMATOPTION "QUANTIZE_COLORS=256"
>     FORMATOPTION "QUANTIZE_NEW=ON"
>     TRANSPARENT ON
>  END
>
> Best regards
>
>        Stephan
>
>
>> 2011/4/8 Lime, Steve D (DNR) :
>> > Can you share the batnight.png file? Any difference if you remove
>> > "TRANSPARENT 0"? It shouldn't have any effect since transparency is
>> > picked up from the pixmap. By chance does this work ok in 6.0?
>> >
>> > Steve
>
> --
> Stephan Holl  | Tel.: +49 (0)541-33 508 3663
> Intevation GmbH, Neuer Graben 17, 49074 OS  |  AG Osnabrück - HR B 18998
> Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
>
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Re: [mapserver-users] Transparency of overlapping PNG-symbols [solved]

[Stephan Holl]

Hello thomas,

thomas bonfort , [20110408 - 16:52:53]

> Given the artifact, I'd say that you are using the GD renderer. Are
> you sure it's the AGG one that is being selected when you create that
> image?

At least I was, yes, but after looking at the _right_ mapfile it was
missing the AGG-rendering-options.

setting the following helps.
  IMAGETYPE aggpng

  #8bit png, supports transparency.
  OUTPUTFORMAT
 NAME aggpng
 DRIVER AGG/PNG
 MIMETYPE "image/png"
 ## transparency only with RGBA Image Mode
 ## mapserver had to be compiled -with-experimental-png
 IMAGEMODE RGBA
 EXTENSION "png"
 FORMATOPTION "QUANTIZE_FORCE=ON"
 FORMATOPTION "QUANTIZE_COLORS=256"
 FORMATOPTION "QUANTIZE_NEW=ON"
 TRANSPARENT ON
  END

Best regards

Stephan


> 2011/4/8 Lime, Steve D (DNR) :
> > Can you share the batnight.png file? Any difference if you remove
> > "TRANSPARENT 0"? It shouldn't have any effect since transparency is
> > picked up from the pixmap. By chance does this work ok in 6.0?
> >
> > Steve

-- 
Stephan Holl  | Tel.: +49 (0)541-33 508 3663
Intevation GmbH, Neuer Graben 17, 49074 OS  |  AG Osnabrück - HR B 18998
Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner


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[mapserver-users] Mapserver search performance

[Varun saraf]

Hello Everyone,

I have programmed a GIS application using Mapserver, Google maps and
Tilecache. The functionality of this GIS application is to extract the
data (from the dbf file) for all features (Points) within a randomly
drawn user shape and doing some statistical operation on that data. I
use an NQUERY mode with MAPSHAPE attribute to get all the data for the
user drawn shape. Mapserver takes aout 5-10 seconds for a small shape
(a couple of square miles) but as the shape gets bigger (hundreds of
square miles), the time taken to fetch all data related to the
features/points lying in the shape grows exponentially (Upto 2 hours
for some shapes). Until now, we were restricting the maximum area a
shape can have but we have to get rid of that. Is there a way to
improve the performance in any way? Will SHPTREE work for this
purpose? The features are currently points only but we may move to
polygons in future. We use the .shp files for the shapes. Is it
advantageous to move to a database instead? If yes, what database
works best?

What I did notice is that for any given request to mapserver, however
large the shape, the CPU utilization never crosses 12%. Can we improve
performance by increasing the RAM or maybe move to a solid state hard
drive? There is also the possibility of moving this application to
Cloud computing. Anything that will improve the performance actually.
Can someone point me in the right direction as to what might be the
current bottleneck?

T current setup is on windows and uses MS4W on an Apache server.

Thanks,
Varun
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