convert - Features to 3D from 2D in QGIS

Is there a way to convert 2D features to "3D" features in QGIS? I know there is a way to do this in ArcMap by using an attribute value in the attribute table, but I am looking to do this with shapefiles in QGIS.

Answer

You can use the v.to.3d module in the GRASS toolkit (installed with QGIS) to do 2d to 3d layer transformation:

v.to.3d - Performs transformation of 2D vector features to 3D.