Type Catalog

A reference list of every type MEOS exposes. For the conceptual model behind temporal types (instant / sequence / sequence-set subtypes, discrete / linear / stepwise interpolation, bounding boxes), see the Data Model page.

Temporal types

Temporal types represent the evolution of a value over time. Each is parameterised by a base type and is available in the three subtypes (Instant, Sequence, Sequence Set) described in the data model.

Type	Base type	Notes
`tbool`	`bool`	discrete or stepwise interpolation only
`tint`	`int`	discrete or stepwise interpolation only
`tfloat`	`float`	discrete, linear, or stepwise interpolation
`ttext`	`text`	discrete or stepwise interpolation only
`tgeompoint`	2D / 3D `geometry` point	spatial-temporal in a Cartesian plane (any SRID)
`tgeogpoint`	2D / 3D `geography` point	spatial-temporal on the geodetic sphere
`tgeometry`	arbitrary `geometry`	beyond points: lines, polygons, collections
`tgeography`	arbitrary `geography`	geodetic counterpart of `tgeometry`

Span types

Spans represent contiguous ranges over an ordered base type. They correspond to PostgreSQL range types.

Type	Range over
`intspan`	`int`
`bigintspan`	`bigint`
`floatspan`	`float`
`datespan`	`date`
`tstzspan`	`timestamp with time zone`

Span set types

A span set is a finite union of spans of the same family.

Type	Underlying span
`intspanset`	`intspan`
`bigintspanset`	`bigintspan`
`floatspanset`	`floatspan`
`datespanset`	`datespan`
`tstzspanset`	`tstzspan`

Set types

Sets represent finite, sorted, uniqued collections of values of an ordered base type.

Type	Element type
`intset`	`int`
`bigintset`	`bigint`
`floatset`	`float`
`dateset`	`date`
`tstzset`	`timestamp with time zone`
`textset`	`text`
`geomset`	`geometry`
`geogset`	`geography`

Bounding-box types

Bounding boxes carry the spatial / value / temporal extent of a value and are used for indexing and for fast disjointness checks.

Type	Carries
`tstzspan`	temporal extent only — used for `tbool` and `ttext`
`tbox`	value extent (X) + temporal extent (T) — used for `tint` and `tfloat`
`stbox`	spatial extent (X, Y, optional Z) + temporal extent (T) — used for `tgeompoint`, `tgeogpoint`, `tgeometry`, `tgeography`

Optional / specialised types

These types are gated behind compile-time flags in MEOS so that deployments can include only what they need. Each is exposed by its respective binding when the corresponding flag is enabled.

Type	Flag	Domain
`cbuffer` / `tcbuffer`	`-DCBUFFER=ON`	circular buffers (point + radius) and their temporal evolution
`npoint` / `tnpoint`	`-DNPOINT=ON` (default)	network-constrained points (along a road / network edge) and their temporal evolution
`pose` / `tpose`	`-DPOSE=ON`	rigid-body poses (position + orientation) and their temporal evolution
`rgeo` / `trgeo`	`-DRGEO=ON` (depends on `POSE`)	rigid geometries — geometries attached to a moving pose

The catalog grows over time as new external base types are lifted to their temporal counterparts. Bindings consume whatever MEOS exposes; binding-specific availability follows the binding’s own compile-time flags.

For the conceptual model behind these types — instant / sequence / sequence-set subtypes, discrete / linear / stepwise interpolation, and how bounding boxes work — see the Data Model page. For the on-the-wire encoding of values of any type in this catalog, see Moving Feature Formats.