I used QGIS to find the extents of a list of features from a census boundaries shapefile.
I used Vector - Research tools - Polygon From Layer Extent, which creates a new shapefile with a table of extent values for each feature.
However, I need to join this new table with the old one so that I have the extent values as well as other necessary fields from the original source shapefile. And the new extent shapefile doesn't have a join field.
Is there a way to join a polygon extent layer with its original source layer? I can try adding a new column to both tables with ordered numbers, but are the extent tables produced with the same ordering as their source?