[mapserver-users] WMS problem

Fri Feb 27 06:48:59 EST 2009

Hi Pietro,

1.I've tried to invoke mapserver in cgi mode and it seems ok.
http://webgis.provincia.biella.it/cgi-bin/mapserv?map=/opt/fgs/apps/mapservergeo/map/basewms.map&mode=map&layer=stati

2. We looked on the apache log file and we fixed some errors we had in a php 
file.
Anyway things are not changed.
http://webgis.provincia.biella.it/apps/maplab/projects/gmf_apps/basewms4/wmdmap.php

Please, do you have anything else to suggest?
Thank you very much for your help
ciao
andrea

arch. Andrea ARDITO
Sistema Informativo Territoriale Ambientale (S.I.T.A.)
Settore Pianificazione e Sicurezza del Territorio
Provincia di Biella
Via Quintino Sella, 12 - 13900 BIELLA
tel. 015.8480880
fax. 015.8480740

-----Original Message-----

From: Pietro Giannini <pgiannini at bytewise.it>

To: mapserver-users <mapserver-users at lists.osgeo.org>

Date: Thu, 26 Feb 2009 16:11:41 +0100

Subject: Re: [mapserver-users] WMS problem

Hi Andrea,

1. no

2. no matters

3. It is difficult to answer...

If the problem is EXTENT & PROJECTION, remember that a .map file
has the PROJECTION set at map level and PROJECTIONs set at layers
level; the map Projection is the projection system of the result of the
map (i.e. the map image), the layer Projection is the projection system
of the data source of the layer. If a layer datasource projection
differs from the map projection, you must to set it, otherwise ms try
to project the data according with map projection.

Try invoke mapserver in cgi mode to see the results:
http://the.host/cgi-bin/mapserv?map=/path/of/the.map&mode=map&layer= 
[http://the.host/cgi-bin/mapserv?map=/path/of/the.map&mode=map&layer=]...

Imho your problem isn't the map, but occurs in your php script. Take a
look on the php error log: it is a text file, its path is set in your
php.ini file (error_log directive, can be an absolute or relative path)

4. obviously scale is nonsense when using non-projected reference
systems like epsg:4326, but mapserver does not know.

hth

ciao

....................pg

-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E

Andrea Ardito ha scritto:

Hi, we have this system working with MapServer version 4.8.2, PHP 
version 4.4.2. I am trying to do a map that shows both layer (WGS84 
shapefile) and WMS data togheter. The starting response is ok, but I get the 

blank image from the first pan or zoom on. This is the example URL: 
http://webgis.provincia.biella.it/apps/maplab/projects/gmf_apps/basewms4/wmdmap.php 
[http://webgis.provincia.biella.it/apps/maplab/projects/gmf_apps/basewms4/wmdmap.php] 

 I guess the problem is due to wrong parameters for EXTENT, SIZE and 
PROJECTION in the mapfile. These are: EXTENT -15 25 40 70 SIZE 470 520 
PROJECTION "init=epsg:4326".  The question are: 1. the SIZE (in pixel) has 
to be proportional to the EXTENT? 2. if yes, how to obtain the right values 
for the EXTENT? 3. if not, where is the problem? 4. in a map with geographic 

non-projected data like this, is correct to have value for scale of the 
representation since UNITS are DD?  I would be very grateful for any help 
from you all, thanks! Best regards andrea ardito  P.S. If I set no layer in 
the map file, and I try to represent only WMS layer (adding them from 
"Servizi WMS" button), it works.

arch.
Andrea ARDITO

Sistema
Informativo Territoriale Ambientale (S.I.T.A.)

Settore
Pianificazione e Sicurezza del Territorio

Provincia
di Biella

Via
Quintino Sella, 12 - 13900 BIELLA

tel.
015.8480880

fax.
015.8480740

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