Hi, I am using QGIS 2.18.2 on a Mac and new to QGIS (or much of GIS), but I would like to get a specific task done and I am not sure if I ran into a fundamental limitation of QGIS.
As I tried to describe on gis.stackexchange.com, I would like to produce shape files for US census block groups (CBGs) but separately for each (or the few largest) commuting zone (CZ). http://gis.stackexchange.com/q/227420/28426 CBG shape files are available state by state, but the commuting zone is not an attribute in the Census files. Yet if I join a layer of a shape file with another layer with CZ identifiers, I can only filter the result to get a virtual layer, which does not export the geographies if exported/saved. See a separate question specifically on that: http://gis.stackexchange.com/q/227277/28426 I am aware of some limitations of the QGIS architecture that might cause this. https://hub.qgis.org/issues/8141 However, maybe there is a common workaround which I haven't found. Or anything else you can think of but I could not. Thanks for any help, Laszlo
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