Hi Lee, I don't have an answer, but I have seen similar things if I've been editing the strings and then go into the attribute table without saving first.
Is it possible to post a bit of your shape file somewhere for those that know what they're doing to look at? This may help. -ramon. On 06/11/2012, at 2:35, Lee Hachadoorian <lee.hachadooria...@gmail.com> wrote: > Strange problem with editing attribute tables. I've used the field > calculator to create a new column, calculate a percentage as > > 1.0 * "column1" / "column2") * 100.0 > > The field calculation works. Then when I save the edits (using either > direct save, or toggle editing off and choose Save when prompted) all > of the values in the new field become NULL. > > I and a colleague have tested this on two OSes (Linux and Mac) using > two different shapefiles, representing different geographies but with > the same attribute table. > > Any ideas? > > Regards, > --Lee > > -- > Lee Hachadoorian > Asst Professor of Geography, Dartmouth College > http://freecity.commons.gc.cuny.edu/ > _______________________________________________ > 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