1. Lightning Talk: Introducing
the GeometryValidator
April – June 2013

2. GeometryValidator
 New in FME 2013
 Combines the functionality of SelfIntersector,
OGCGeometryValidator and more…
 2D & 3D Validation Tests
 Enables you to
 Check for and repair invalid geometries
 Select the issues you wish to detect
 Repair common issues
 Reports information about issues on attributes and
geometry traits

3. Geometry Validation
 Detection
PASSED detection
FAILED detection
 Repair
PASSED detection
FAILED to repair
REPAIRED fully
 Issue Reporting
 .issue_found
 .location_sample.x
 .location_sample.y
 .location_sample.z
 .repair_state

5. Validation Tests
 12 tests so far and more will be added
 NaNs or infinities
 Null geometry parts
 Duplicate consecutive points
 Degenerate or corrupt geometries
 Self-intersections
 Missing vertex normals
 OGC simple and valid
OGC Examples

6. Things to Keep in Mind
 Ordering of issues is important Example
 Certain repairs may change geometry type
 General strategy
 Reduce input down to 1 feature. This should always
be possible.
 Separate GeometryValidators into a minimum set
of single-operation validations.

7. Issue Reporting
 General Description stored in attribute
Example
 Issue location stored as a geometry trait
Example
 Stores information on multiple issues

8. 3D Geometry Validation
 Checks for solids with inverted faces, dangling
surfaces, unsealed solids, etc.
 Flag errors with meaningful attributes and
geometric locations of the errors.
 Repair option for 3D surfaces and solids.

9. 3D Validation - Detection

10. 3D Validation - Repair

11. Thank You!
 Questions?