[mapserver-users] GeoJSON output from MapServer

[Fabio D'Ovidio]

Hello,
sorry ...but i read also this mailing list :-)

Well,  our project wants to be indipendent from web application used to
transfer GeoJson because GeoBI is compliant to the OGC standards such as
WFS, WMS, SLD, etc...

Now, about this first implementation of GeoReport we used GeoServer because
it gives the possibilitiy to use in append to the WFS HTTP request
"outputformat=geojson" instead of GML.

Anyway MapOl makes a WFS request and reads the output by using
mapfish-geojson-lib...so there are 3 ways to use MapServer to do the same:

   1. use a GeoJSON template for WFS output
   2. use a GeoJSON template for mapserver CGI output
   3. GeoReport must do the conversion from WFS-GML to GeoJSON

At the moment we have choosen GeoServer but this is not exclusive respect
other WFS service implementations!
Anyway I think you can use at the moment both MapServer and GeoServer: you
must serve with GeoServer only the LAYER on which you want to do BI analysis
(so...one, two layers...not all cartographic levels)...while you can display
your layers by using MapFish Client and OpenLayers as WMS, WFS or MapServer
Layers!

PS:  what kind of geometries you want to analyze (by using GeoJSON)? POINTS,
POLYGONS....MULTIGEOMETRIES?

Thank you very much!

Fabio D'Ovidio

2009/7/1 <Dejan.Gambin at pula.hr>

>
> Steve,
>
> Here are more details, I am sure you'll have some further suggestions:
>
> There is a project called GeoReport, part of GeoBI suite, that integrates
> the data coming from Business Intelligence processes (Pentaho BI) with their
> cartographic representation. Since I am pretty much involved in both areas
> (WebGIS, BI), this seems very interesting to me, although I first saw it
> yesterday :-(
>
> Here are the main informations about GeoReport:
> http://www.geobi.org/2009/01/georeport-module.html
>
> As I can see, basically, there is a MapOL module that runs BI process in
> order to get resultset, join it with geometries coming from GeoServer (WFS)
> and returns GeoJSON data to WebGIS client (MapFish and OpenLayers + Geostat
> widgets) which displays it on the map.
>
> I have been in contact with Fabio (he is "responsible" for all this). Based
> on what he said, I understood (maybe wrongly) that WFS server needs to
> return GeoJSON, and GeoServer can do it. Now, as I write this to you, it
> seems like MapOL is responsible for creating GeoJSON data ?!
>
> Anyway, I am new to this almost as you and if you can take a look on above
> link, I would appreciate it very much. I "only" want to use MapServer
> instead of GeoServer. If I can't do it, then I'll rather do nothing as I
> have no intentions to use anything but MapServer :-)
>
> thanks very much
>
> regards, dejan
>
> "Steve Lime" <Steve.Lime at dnr.state.mn.us> wrote on 01.07.2009 16:36:48:
>
> > Depends on how you need to access it. You certainly can create a
> > template that will output GeoJSON. However,
> > at the moment you can only access that output though calls to the
> > CGI and (probably) MapScript. WMS and WFS
> > do not recognize the template output format although there are plans
> > to do so in the upcoming release.
> >
> > Let me know if I can help further...
> >
> > Steve
> >
> > >>> On 7/1/2009 at 7:44 AM, in message
> > <OF425313EF.2215E677-ONC12575E6.004595DF-C12575E6.00460800 at pula.hr>,
> > <Dejan.Gambin at pula.hr> wrote:
> > > Hi,
> > >
> > > Is it possible to use GeoJSON template for getting GeoJSON output from
> > > MapServer? I have tried using outputformat as described in:
> > >
> > > http://mapserver.org/development/rfc/ms-rfc-36.html and
> > > http://mapserver.org/development/rfc/ms-rfc-56.html
> > >
> > > Is it supported at all? I have a project where I need a GeoJSON output.
>
> > > This project originally uses GeoServer whcih has a plugin for this. Is
> > > this possible with MapServer? I am using MapServer 5.4.1
> > >
> > > thanks very much
> > >
> > > regards, dejan
> >
>
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>
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