[Mapserver-users] newbee-questions: clients, data access, dynamic layers, cascading servers

[Eric Bridger]

4.) Is it possible to build a MapServer-configuration which serves
> >> dynamic content (generated with 2. and 3.) to other OGC-WMS-Servers?
> >AFAIK, yes.

Yes but you will need to use some variant of mapscript.  There are perl
mapscript examples in the wiki:

http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?PerlMapScriptExamples35 in
particular see the mapquakes.pl example.

Eric


On Thu, 2003-08-28 at 10:04, Frieso ter Haseborg wrote:
> > -----Original Message-----
> > From: Lowell Filak [mailto:lfilak at medinaco.org]
> > Sent: Wednesday, August 27, 2003 6:00 PM
> > To: Frieso ter Haseborg; mapserver-users at lists.gis.umn.edu
> > Subject: Re: [Mapserver-users] newbee-questions: clients, data access,
> > dynamic layers, cascading servers
> 
> First of all: thanx for the list of links - obviously I will have to do
> some more studies. ;-)
> 
> >> 1.) What are common open-source web-gis-clients? We just 
> >> want to check some alternatives.
> > Not sure what you mean, WMS or WFS client or just a web browser?
> 
> Both. WMS and WFS Clients - I prefer browser-based, but if there are
> non-browser-clients - I would at least take a look at.
> 
> >> 2.) Is it possible to retrieve data from a SQL-Database (Oracle, SQL
> >> Server, Sybase ASA) with MapServer? If so, are there any how-to's or
> >> tutorials?
> > Yes, but it depends on if you are reading from a database with a
> > "spatial" extension that directly supplies geographic data or 
> > if you are reading simple attributes, such as the x & y coordinates 
> > of a point, and need to create a geographic feature for display.
> 
> No, only the x&y-coordinates thing, no spatial support in the databases.
> I just want to create a layer drawing a point and possibly a describing
> label. Can MapServer do an data-access itsself or do I have to do this
> in PHP or something?
>  
> >> 3.) Can I create dynamic layers from the data retrieved with 2.)?
> > If the data is dynamically handled directly in the RDBMS and MS uses
> > that data directly, ie. PostGIS then the database handles the 
> > "dynamic" nature of the data and MS simply uses what the database 
> > supplies.
> > If the data comes from a shapefile and you want MS to handle 
> > the changes
> > to the data then you can use some flavor of MapScript to program that.
> 
> No shapefiles. Okay, perhaps I will have some shapefiles as basic layers
> among some raster-files. Above this basic-layers I want to draw a layer
> created from the data obtained from a the DBMS.
> 
> >> 4.) Is it possible to build a MapServer-configuration which serves
> >> dynamic content (generated with 2. and 3.) to other OGC-WMS-Servers?
> >AFAIK, yes.
> 
> Has anyone experiences with this, examples, howto's, any ressources,
> hints? 
> 
> TIA,
> Frieso
> 
> 
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