[mapserver-users] layer data sources more than one

[Cristiano Sumariva]

Also there is the LAYER TILEINDEX
http://mapserver.org/optimization/tileindex.html#tileindex
that may do that you need. Like a virtual mosaic.

2011/9/12 Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi>

> Hi,
>
> You will do it with "ogrtileindex". Read
> http://www.mapserver.org/optimization/tileindex.html
>
> -Jukka Rahkonen-
>
> Mr. Puneet Kishor wrote:
>
> > On Sep 11, 2011, at 9:05 PM, JIAJIA WANG wrote:
>
> >> The data in the shapefile are suburb boundaries, but I got several
> > shapefiles, one shapefile for one state. I want a map showing the whole
> > country's suburb boundaries.
> > That's can be done by defining several layers (one layer reads one
> > shapefile) in one mapfile. But actually there are not conflicts between
> > these shapefiles. So I want to know is there any way to define only one
> > layer and read the data from all these shapefiles.
>
>
> > I am pretty sure (but not 100%) that you can have only one data source
> per layer. That said, you could either combine all the shapefiles into a
> single countrywide shapefile, or you could create separate layers, and then
> create a layer group (I am pretty sure you can group the layers into one...
> its been a long time, and I am just coming back to MapServer, so check the
> docs). That way, all the different layers for different states will behave
> as if they are a single layer. From the docs --
>
> GROUP [name]
>  Name of a group that this layer belongs to. The group name can then be
> reference as a regular
>  layer name in the template files, allowing to do things like turning on
> and off a group of
>  layers at once.
>
> >
> > On Mon, Sep 12, 2011 at 11:17 AM, Mr. Puneet Kishor <punk.kish at gmail.com
> >wrote:
> >
> >>
> >> On Sep 11, 2011, at 8:10 PM, jjwang wrote:
> >>
> >>> Hi,
> >>>
> >>> I know that the DATA statement should be given a data source of the
> >> layer.
> >>> What if the data comes from multi shapefiles?
> >>> Can I give it a list of shapefiles and how to write it?
> >>>
> >>
> >>
> >> Generally a LAYER maps to a shapefile or a table in a db. It is hard for
> me
> >> to imagine how one layer could have data from two or more shapefiles.
> >> Perhaps more explanation would help here.
> >>
> >>
>
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