[Qgis-user] Field calculator

[Nicolas Cadieux]

Thanks for the help Matthias. 

Apparently Saga has a module that will merge shape files and has an option to specify the source file name. This is what I needed as I have thousands of files to merge.

Is't for a Lidar file index but lastools does not have that option.

Thanks for the help. 

Nicolas Cadieux M.Sc.
Les Entreprises Archéotec inc. 
8548, rue Saint-Denis Montréal H2P 2H2
Téléphone: 514.381.5112  Fax: 514.381.4995
www.archeotec.ca

On Jun 18, 2015 4:41 PM, Matthias Kuhn <matthias.kuhn at gmx.ch> wrote:
>
> Hi Nicolas, 
>
> I think at the moment there is no way to achieve that without explicitly 
> stating the layer id or name in the expression itself, since the layer 
> is not known to the expression. This will probably change soon with the 
> introduction of the "Expression Context" work by Nyall Dawson. 
>
> If it is an option for you to specify the layer name, you can use the 
> map layer registry to find the layer and then use the dataSourceUri of 
> the provider of this layer to find the file name. 
>
> Regards, 
> Matthias 
>
> On 06/18/2015 09:39 PM, Nicolas Cadieux wrote: 
> > Hi, 
> > 
> > I need to use the field calculator to add the file name or layer name to a new field.  Is there an expression for that?  If not, can someone help me with the function Editor? 
> > 
> > Thanks 
> > 
> > Nicolas Cadieux M.Sc. 
> > Les Entreprises Archéotec inc. 
> > 8548, rue Saint-Denis Montréal H2P 2H2 
> > Téléphone: 514.381.5112  Fax: 514.381.4995 
> > www.archeotec.ca 
> > _______________________________________________ 
> > Qgis-user mailing list 
> > Qgis-user at lists.osgeo.org 
> > http://lists.osgeo.org/mailman/listinfo/qgis-user 
>