Thanks! This did the trick. Heikki
On Mon, 15 Mar 2010 10:24:33 +0100 (CET) "Andreas Neumann" <a.neum...@carto.net> wrote: > One option is to introduce a VRT file. > > VRT is a virtual file combining several physical rasters into one logical > raster file by referencing the physical files. You can create a VRT-File > with gdal on the command line, or maybe even more comfortable with the > gdal-tools plugin. > > After installing the gdaltools plugin use the "Build virtual raster" tool. > > Andreas > > On Mon, March 15, 2010 9:59 am, Heikki Luhamaa wrote: > > Hi, > > > > this thing I know and works perfectly well for me. But, I need to apply > > these visibility settings to several dozens of raster files at once. And > > doing this one-by-one is quite time consuming. So, it would be nice to > > have option to apply these setting to a bunch of files at once. For > > example by right mouse-click on group tab and then selection group > > properties and scale dependent visibility for whole group (dreaming...)? > > But maybe there is some kind of work-around to achieve this. I am not > > familiar with python (nor programming) but is it possible to implement > > this kind of behaviour through plug-in? > > > > Heikki > > > > On Mon, 15 Mar 2010 09:22:32 +0100 (CET) > > "Andreas Neumann" <a.neum...@carto.net> wrote: > > > >> Hi Heikki, > >> > >> For every data layer you can set the scale-dependent rendering with > >> min/max values. > >> > >> Go to layer properties --> General --> Use Scale Dependent Rendering --> > >> set min/max values. > >> > >> For correct scale calculations it is important that you correctly set > >> the > >> map units and projection parameters. > >> > >> Unfortunately, a data layer can only have one scale range, if you want > >> to > >> display the same layer with different filter and symbolization settings > >> you have to load the layer several times. > >> > >> Alternatively, you can use a WMS server to serve your raster data and > >> use > >> the scale-range settings of your mapserver. This way your users only > >> have > >> to load one layer and the server deals with the scale settings. > >> > >> Hope this helps, > >> Andreas > >> > >> On Mon, March 15, 2010 7:28 am, Heikki Luhamaa wrote: > >> > Hi all, > >> > > >> > is there somehow possible to apply "Scale dependent visibility" option > >> on > >> > several raster layers or to the whole project at once? I have several > >> > projects where I need to have open several dozens or more raster > >> layers. > >> > Despite qgis renders rasters quite quickly it would probably speed up > >> > things if I can hide them, at certain zoom level. > >> > > >> > Thanks, > >> > Heikki Luhamaa > >> > _______________________________________________ > >> > Qgis-user mailing list > >> > Qgis-user@lists.osgeo.org > >> > http://lists.osgeo.org/mailman/listinfo/qgis-user > >> > > >> > >> > >> -- > >> Andreas Neumann > >> http://www.carto.net/neumann/ > >> http://www.svgopen.org/ > >> > > > > > > -- > > Heikki Luhamaa <heikkil...@hot.ee> > > _______________________________________________ > > Qgis-user mailing list > > Qgis-user@lists.osgeo.org > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > -- > Andreas Neumann > http://www.carto.net/neumann/ > http://www.svgopen.org/ > -- Heikki Luhamaa <heikkil...@hot.ee> _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user