Spatial Filter
A Spatial Filter defines a spatial searching constraint or query, using a spatial operator. The following spatial operators are supported:
- Overlaps – The features to be returned may lie within, or partially within, the specified geometry. Boundaries that touch are considered overlapping.
- DWithin – The features to be returned lie within the specified distance from the geometry.
- Within – The features to be returned lie within the specified geometry. Boundaries can touch, but the inner object cannot have any points outside the containing boundary.
- Beyond – The features to be returned lie outside the specified geometry.
Abbreviations for units of measure in addition to full names (for example, "mm," "millimeter," and "millimetre") are all supported:
| Unit | Abbreviation |
| inch | in |
| foot | ft |
| yard | yd |
| mile | mi |
| millimeter/millimetre | mm |
| centimeter/centimetre | cm |
| meter/metre | m |
| kilometer/kilometre | km |
| survey foot | sft |
| nautical mile | nmi |
| link | li |
| chain | ch |
| rod | rd |
| twip | twip |
| point | pt |
| pica | pica |