[Mapserver-users] Loading data from another server

Lowell Filak lfilak at medinaco.org
Wed Aug 27 15:11:55 EDT 2003 

If I understand correctly you could then do something like:
"wget -O data.shp http://www.myDataServer.com/data"
and set SHAPEPATH to data.shp .
It's not quite that easy because because for the shape example you would
need to request shx & dbf also or if they are all shipped together in
the stream they would need broken apart.
In MapScript you could theoretically store the resulting data past in
via the URL in a variable and use that for the $layer->{data} without
requiring an intermediate file.
Lowell

The following message was sent by "Jeff L." <nf10 at hotmail.com> on Wed,
27 Aug 2003 19:00:44 +0000.

> 
> 
> Sorry about that: i meant by storage back end a web server directory
where 
> the data are stored.
> Yes the data need to be pulled by an url. Example:
> www.myDataServer.com/data
> 
> Jeff
> 
> >From: "Lowell Filak"<lfilak at medinaco.org>
> >To: "Jeff L." <nf10 at hotmail.com>, David.Fawcett at state.mn.us,   
> >lfilak at medinaco.org, mapserver-users at lists.gis.umn.edu
> >Subject: RE: [Mapserver-users] Loading data from another server
> >Date: Wed, 27 Aug 2003 14:57:56 -0400
> >
> >What type of storage back end is it?
> >I'm confused as you mentioned earlier that the data could be pulled
> >through a URL.
> >Lowell
> >
> >The following message was sent by "Jeff L." <nf10 at hotmail.com> on Wed,
> >27 Aug 2003 18:50:59 +0000.
> >
> > > Hi David,
> > >
> > > For a start i'm trying to run the demo, but once i have the demo
> >running, i
> > > would try something more elaborated.
> > >
> > > The option 2 sounds good by having the WMS. But it's seems that the
> >server
> > > hosting the data have to run also MapServ. My remote server has no
> >business
> > > intelligence, only a storage back end for the data.
> > >
> > > Any example would be more than welcome.
> > >
> > > Jeff
> > >
> > >
> > > >From: "Fawcett, David" <David.Fawcett at state.mn.us>
> > > >To: lfilak at medinaco.org,    mapserver-users at lists.gis.umn.edu,    
> >"'Jeff
> > > >L.'" <nf10 at hotmail.com>
> > > >Subject: RE: [Mapserver-users] Loading data from another server
> > > >Date: Wed, 27 Aug 2003 13:41:06 -0500
> > > >
> > > >As Lowell said below, you have two options:
> > > >
> > > >1.  To access the data directly, you have to configure your
server(s) 
> >so
> > > >that you can 'see' it as a directory in a path on your machine.
> >SHAPEPATH
> > > >has to be a valid path (not URL).
> > > >
> > > >I think that the key here is that based on the hardware and software
> > > >platform and security scheme you are utilizing, you need to figure
> >out how
> > > >to map/mount/access a remote drive.  This is more a question for your
> >admin
> > > >than this list.
> > > >
> > > >2.  You can set up a WMS server using MapServer, which I haven't
> >done, but
> > > >I understand isn't that hard.  Depending on the data that you
need, you
> > > >could also potentially hit an existing WMS server that contains the 
> >data.
> > > >
> > > >Heck, if this is just for a demo, you could possibly put the data on
> >a CD
> > > >and point your SHAPEPATH to a folder on the CD.
> > > >
> > > >I think that the key here is that based on the hardware and software
> > > >platform you are utilizing, you need to figure out how to
> >map/mount/access
> > > >
> > > > > ----------
> > > > > From: 	Jeff L.[SMTP:nf10 at hotmail.com]
> > > > > Sent: 	Wednesday, August 27, 2003 1:03 PM
> > > > > To: 	lfilak at medinaco.org; mapserver-users at lists.gis.umn.edu
> > > > > Subject: 	Re: [Mapserver-users] Loading data from another server
> > > > >
> > > > > Hi,
> > > > >
> > > > > I went through the documentation "WMS client and WMS server", 
> >however
> > > >it's
> > > > > seems that server location of the data have to have mapserver
> >installed.
> > > >I
> > > > > might be wrong. And also there is no suggestion about
replacing the
> > > > > "SHAPEPATH".
> > > > >
> > > > > My need is to run the demonstration project, but by decoupling the
> >data
> > > >from
> > > > > the application.
> > > > > I can run the demo fine if every is installed in the same server.
> >Now i
> > > > > moved the shape data to another web server and want to be able to 
> >run
> > > >the
> > > > > demonstration.
> > > > >
> > > > > My understanding is that i would be able to that by making
> >modifications
> > > >to
> > > > > the .map file only. I guess i was wrong.
> > > > >
> > > > > If there is any example, how to run the demo (or another project)
> >using
> > > > > remote data, that would be great.
> > > > >
> > > > > Jeff Lacoste
> > > > >
> > > > >
> > > > > >From: "Lowell Filak"<lfilak at medinaco.org>
> > > > > >To: "Jeff L." <nf10 at hotmail.com>, lfilak at medinaco.org,
> > > > > >mapserver-users at lists.gis.umn.edu
> > > > > >Subject: Re: [Mapserver-users] Loading data from another server
> > > > > >Date: Wed, 27 Aug 2003 12:47:27 -0400
> > > > > >
> > > > > >http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?WMSMapServer
> > > > > >http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?WFSMapServer
> > > > > >HTH
> > > > > >Lowell
> > > > > >
> > > > > >The following message was sent by "Jeff L." <nf10 at hotmail.com> on
> >Wed,
> > > > > >27 Aug 2003 16:11:35 +0000.
> > > > > >
> > > > > > > Thanks Lowel for your answer. Could you please point me to how
> >to do
> > > > > >that ?
> > > > > > > a document or an url about accessing remote data would be
great.
> > > > > > >
> > > > > > > Jeff Lacoste
> > > > > > >
> > > > > > >
> > > > > > > >From: "Lowell Filak"<lfilak at medinaco.org>
> > > > > > > >To: "Jeff L." <nf10 at hotmail.com>,
> >mapserver-users at lists.gis.umn.edu
> > > > > > > >Subject: Re: [Mapserver-users] Loading data from another
server
> > > > > > > >Date: Wed, 27 Aug 2003 12:05:50 -0400
> > > > > > > >
> > > > > > > >That format for accessing data requires that the data looks
> >like a
> > > > > >local
> > > > > > > >file whether it is network mounted or etc.
> > > > > > > >There is also an option of reading data in a WMS or WFS
fashion
> > > >from a
> > > > > > > >remote source.
> > > > > > > >HTH
> > > > > > > >Lowell
> > > > > > > >
> > > > > > > >The following message was sent by "Jeff L."
> ><nf10 at hotmail.com> on
> > > >Wed,
> > > > > > > >27 Aug 2003 15:12:32 +0000.
> > > > > > > >
> > > > > > > > > Hi,
> > > > > > > > >
> > > > > > > > > I was wondering if the location of data used in MapServer
> >can be
> > > >a
> > > > > > > >different
> > > > > > > > > location from the one where MapServer is running.
> > > > > > > > >
> > > > > > > > > I would like to run the MapServer in a server pointing to
> >data
> > > >in
> > > > > > > >another
> > > > > > > > > server. I tried to change this tag in the .map file:
> > > > > > > > >
> > > > > > > > > SHAPEPATH "http://www.MyServer.com/data/"
> > > > > > > > >
> > > > > > > > > There was an error:
> > > > > > > > > msOpenSHPFile(): Unable to access file. (MyLayerData)
> > > > > > > > >
> > > > > > > > > My data do exist in the "http://www.MyServer.com/data/"
> > > >location.
> > > > > > > > >>
> > > > > > > > > I'm using MapServer 3.6.
> > > > > > > > >
> > > > > > > > > Thanks,
> > > > > > > > >
> > > > > > > > > Jeff Lacoste
> > > > > > > > >
> > > > > > > > >
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> > > > > > >
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