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
--http://www.provincia.biella.it------------------------------------------------------
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