On 02/23/2014 10:35 AM, Pete Cimbolic wrote: > I am attempting to make a layer with one dot representing each person of a > particular race using 2010 census data, similar to this one: > http://demographics.coopercenter.org/DotMap/ > > I am trying to figure out why I am able to do this using 2000 Census Tracts, > but not 2010 Tracts. I have joined demographic data to the shape files for > both 2000 and 2010 tracts, formatted each the same way, yet when I try to > select 2010 census tracts, no fields show up when I click on the “Use value > from input field” toggle button under Vector>Research Tools>Random Points. > The fields do show up when I select the 2000 tracts. > > Any thoughts? > > Pete Cimbolic > [email protected] > Make sure QGIS is reading the fields in question as numeric or integer and not as text. You can see this in the Properties of the layer, I think under metadata. If it is reading it wrong, you'll need to check that all the values are indeed numbers and either calculate a new field based on it or edit the underlying format (I assume dbf) so that it is a number.
Thanks, Alex _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
