GPKG Time Series Format Specification

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Revision as of 02:31, 10 November 2023 by Ellis Symons (talk | contribs)
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The below section lists the TUFLOW GPKG time series format specification. The specification sits ontop of the GPKG v1.2 Specification with two additional required tables. The below lists the details of the additional tables with examples. The examples are based a the 1D/2D linked TUFLOW-SWMM example model based on TUFLOW's module 6 tutorial model - M06_5m_003.tcf.

TUFLOW Time Series Version

An additional table called TUFLOW_timeseries_version

Time Series Info

...

GIS Layers

The results are stored in GPKG layers, typically between 1 - 3 layers are stored in the result file depending on the output (one for point results, one for line results, one for polygon results). There is no requirement against storing results from multiple model runs in a single GPKG, this is just not typically how outputs are written.

The column names of the GPKG layers should follow the convention below:

Column Name Type Description
fid INTEGER Primary key
geometry GEOMETRY GeoPackage Geometry
ID TEXT Element ID (e.g. Pipe1)
Type TEXT Element Type (e.g. CONDUIT)
Source TEXT Result Source (e.g. SWMM)
TimeId INTEGER Unique id for each timestep
Time_hours FLOAT Output time in hours
Datetime DATETIME Output time in datetime
...[column for each result type for that given geometry type - examples below]
Flow FLOAT Result flow
Velocity FLOAT Result velocity