Jeroen Hovens a következőt írta ekkor: 2018. január 10., szerda 12:26:42 EET > At the moment I make the selection using the Select by expression tool. I > then choose one of the Gem2017 values (each object is an address, and has > one of 388 unique Gem217 values). I want to select all objects bwith one > unique Gem2017 value. Making the selection is no problem, I can make any > selection I want. Making the selection usually takes less then a minute. > The problem is in copying specific selections to the clipboard or saving a > selection as a new file. Copying a selection of about 20.000 objects from > the 7,5 mln takes about a second. Unless the issue arises, then the copy > process takes forever >
You can try with csvgrep from csvkit (https://pypi.python.org/pypi/csvkit) csvgrep -d ';' -c Gem2017 -m 363 pc6hnr20170801_gwb.csv > new.csv _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user