Projection on mapserver WMS versus cgi-bin

[Sandro Danilo Gatto]

Hello all

I'll try to do what you told concerning the "wider"
image, but I still don't understand the following:

my layers are store using epsg:29100 projection and I
tell mapserver to use epsg:29100 projection. If I use
mapserver 4.4.1 as WMS, I get an blank image, if not
WMS, everything works perfectly fine! In addition to
the fact that if I use mapserver 4.0.1, both work
fine, with the same mapfile.

Any help would be wonderfull, as my brains aren't
working properly anymore :-)


Sincerely


Sandro

 --- Matthew Perry <mtperry78 at sbcglobal.net> escreveu:

> Sandro,
>
>   Is the WMS image *actually* wider. If the images
> are
> the same width but WMS appears stretched, make sure
> that your image extent is proportional to the image
> size. Mapserver CGI will correct for this and adjust
> the extent but the WMS allows for images to be
> returned with "non-square" pixels.
>
> Matt Perry
>
> --- Sandro Danilo Gatto <prof_gatto at YAHOO.COM.BR>
> wrote:
>
> > Hello
> >
> > I've been making some tests with mapserver 4.4.1
> as
> > a
> > WMS server and I came across a strange behavior
> (at
> > least, from my point of view).
> >
> > I get a blank image if I type the following URL:
> >
>
http://localhost/cgi-bin/mapserv441.exe?service=wms&version=1.1.1&request=getmap&map=C:\Arquivos%20de%20programas\Apache%20Group\Apache2\htdocs\sigppt\wms.map&layers=area_edificada
> >
> > Well, the problem is: I get a perfect image, with
> > all
> > the data I want, if I type
> >
>
http://localhost/cgi-bin/mapserv441.exe?mode=map&map=C:\Arquivos%20de%20programas\Apache%20Group\Apache2\htdocs\sigppt\wms.map&layer=area_edificada
> >
> > It works if I use project as
> >
> > PROJECTION
> >    "init=epsg:29118"
> > END
> >
> > instead of 29100, but the images returned by wms
> and
> > cgi-bin are different (wms returns a "wider"
> image).
> >
> > Note that the map file is exactly the same and
> that
> > both URL work perfect if Mapserver is version
> 4.0.1.
> >
> > Could somebody tell me what I'm doing wrong?
> >
> >
> > Thanks to all
> >
> >
> > Sandro
> >
> >
> > The map file is the following:
> >
> > ----------------------
> >
> > MAP
> > NAME           wms_
> > STATUS ON
> > IMAGETYPE      PNG24
> > EXTENT         -78 -36 -30 8 # minx miny maxx maxy
> > SIZE           425 325
> > IMAGECOLOR     255 251 234
> > SYMBOLSET      "symbols/symbols35.sym"
> > FONTSET        "fonts/fonts.list"
> > UNITS dd
> >
> >
> > WEB
> >   METADATA
> >      "WMS_TITLE" "Base de Dados de Testes"
> >      "WMS_ONLINERESOURCE"
> > "http://localhost/cgi-bin/mapserver441.exe"
> >      "WMS_SRS" "EPSG:29100"
> >          "WMS_EXTENT" "-78 -36 -30 8"
> >   END
> > END
> >
> > PROJECTION
> >    "init=epsg:29100"
> > END
> >
> > LAYER
> >     NAME area_edificada
> >     CONNECTIONTYPE postgis
> >     CONNECTION "user=usuario dbname=sig host=host
> > password=pass"
> >         DATA "geom from area_edificada using
> unique
> > code
> > using SRID=29100"
> >     STATUS ON
> >     TYPE POLYGON
> >
> >     SIZEUNITS meters
> >
> >     LABELITEM "code"
> >     LABELMAXSCALE 250000
> >
> >     CLASS
> >        NAME 'Area Edificada'
> >            COLOR 202 0 0
> >        LABEL
> >          COLOR 0 0 0
> >                  POSITION CC
> >                  TYPE truetype
> >                  FONT arial
> >                  SIZE 25
> >        END
> >     END
> >
> >     DUMP TRUE
> >
> >     METADATA
> >        WMS_SRS "EPSG:29100"
> >        WMS_TITLE "Area Edificada"
> >        WMS_ABSTRACT "Area Edificada"
> >        WMS_EXTENT "-78 -36 -30 8"
> >     END
> > END
> >
> > END
> >
> > ----------------------------
> >
> > =====
> > --------------------------------------
> > Prof. Msc Sandro Danilo Gatto
> > Faculdades Integradas IPEP
> > prof_gatto at yahoo.com.br
> >
> >
> >
> >
> >
> >
>
_______________________________________________________
> > Yahoo! Acesso Grátis - Instale o discador do
> Yahoo!
> > agora. http://br.acesso.yahoo.com/ - Internet
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> > e grátis
> >
>
>

=====
--------------------------------------
Prof. Msc. Sandro Danilo Gatto
Faculdades Integradas IPEP
prof_gatto [at] yahoo.com.br





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