OQ_Analysis

OpenStreetMap Quality Analysis Tools
PostgreSQL Library with PostGIS functions to analyze and transform OpenStreetMap Building data.

See the Prerequisites on the Installation page

The main functions are:

Building Analysis

• OQ_Analysis_Table_Warnings_Error_Flags.sql Buildings irregular geometry warnings and error flags.
• Documentation
• see sql/test directory for more examples

Orthogonal Transformations

• OQ_Orthogonal.sql PRELIMINARY VERSION PostgreSQL Function (id, linestring geometry) Orthogonal Angles corrections - For each row, a JSON variable contains Results (ie, angles, angles corrected, linestring revised. Other procedures can analyse / transform the data, list Node ID's that need revision plus new geometry.

Sample data and Tests

• OQ_sample_data.sql provides the postgis sample tables
• OQ_Test1.sql contains tests for various functions and Orthogonalisation examples plus GeoJSON outputs.
• GeoJson sample results   (Source OSM Data, license ODbL)

GNU General Public License v3.0

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