Hi, Andreas, unless you add the csv file with "Add delimited text layer" tool, I'm afraid there's not a "watch file" option available.
I just add a csv file to a qgis project with "add a vector layer" tool. I open the same csv in a text editor and change some values. While reopening the csv file attribute table in QGIS, values were already uptodate. I've done nothing special. So I'm not sure if QGIS requiers a particular action to sync data. But what seems buggy is that even if the csv file attribue table is updated in QGIS, if this csv was joined to a shapefile, the changes won't be applied in the shapefile's attribute table. Can someone confirm? I can't get changes with the "Refresh" button. Tested with qgis ltr 2.8.3 2015-09-18 10:38 GMT+02:00 Andreas Neumann <a.neum...@carto.net>: > Hi Marco, > > If you have the "watch file" option of your CSV file active it will reread > data when file content changes and when your redraw your map (either > through navigation or redraw button). > > I guess you could also write a small Python script if you want to > automatically trigger an update at a given interval. Maybe there is already > a plugin available - I did not look. > > Andreas > > > On 18.09.2015 10:15, Dr. Marco Lechner wrote: > > Hi Nicola, > > I guess this will only redraw the features in the mapcanvas, but not > necessarily read the datasource file, but I'm not sure about this. > > Marco > > Am 18.09.2015 um 10:02 schrieb Nicola Poles: > > To reload a CSV file you can press the Refresh button on the toolbar or > press the "F5" key > > Nicola > > On Fri, Sep 18, 2015 at 9:16 AM, Dr. Marco Lechner > <mlech...@bfs.de<mailto:mlech...@bfs.de> <mlech...@bfs.de>> wrote: > > Hi, > > how (often) does QGIS read features from a file (like csv or shape - > differences?)? I realize I do not really know how the datasource - qgis- > communication goes. > > Imaine you have a csv or shape file that is loaded into QGIS but is > automatically replaced from time to time (or lets say externally > edited). Using a database- instead of file-based approach is better for > sure, but still it is not clear when / how often (on which events) QGIS > requests features from the datasources. > > As an idea in mind I see, the nice Sync-Plugin > (https://plugins.qgis.org/plugins/SyncQGISWithDir/) can monitor folders > and notify the user if a new layer is available in a folder (well it > does not take care of a changed layer (new timestamp of file, but adding > this functionality should not be such a big thing). The user could also > be notified when a layers file changed. > > But I'm not sure what was the best way to implement the (re)loading of > an already loaded layer. Do I have to drop the layer and reload it > (including keeping the style) or is there a more efficient way? > > Marco > > -- > Dr. Marco Lechner > Bundesamt fuer Strahlenschutz / Federal Office for Radiation Protection > SW2.1 Koordination Notfallschutzsysteme / Coordination Emergency Systems > Rosastrasse 9 | D-79098 Freiburg | Germany > mlech...@bfs.de <mailto:mlech...@bfs.de> <mlech...@bfs.de> | +49 (0)3018 > 333 6724 > <tel:%2B49%20%280%293018%20333%206724> | www.bfs.de <http://www.bfs.de> > <http://www.bfs.de> > > -- > Hinweis zu Anhängen die auf .p7m/.p7c/.p7s oder .asc/.asc.sig enden: > Die .p7?- und .asc-Dateien sind ungefährliche Signaturdateien (digitale > Unterschriften). > In E-Mail-Clients mit S/MIME Konfiguration (.p7?) oder PGP-Erweiterung > (.asc) dienen sie zur: > - - Überprüfung des Absenders > - - Überprüfung einer evtl. Veränderung des Inhalts während der > Übermittlung über das Internet > Die Signaturdateien können ebenso dazu verwendet werden dem Absender > dieser Signatur eine E-Mail mit verschlüsseltem Inhalt zu senden. > > In E-Mail-Clients ohne S/MIME Konfiguration oder PGP-Erweiterung > erscheinen die Dateien als Anhang und können ignoriert werden. > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > <Qgis-user@lists.osgeo.org> > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > _______________________________________________ > Qgis-user mailing listqgis-u...@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user >
_______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
