[mapserver-users] WMS problem

[Pietro Giannini]

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=...

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 
>  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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