Fig. 1From: A direct observation method for auditing large urban centers using stratified sampling, mobile GIS technology and virtual environmentsMain data entry screen of GIS Kit Pro on iPad. Left pane provides SSOI items and pick-lists for Likert response values. Right pane provides current GPS position and offline Google satellite view as well as the audit location as a point feature at which the Likert response values will be stored. Observation buffer zone is shown and was loaded from a shapefile created in a desktop GISBack to article page