MicroMVDs for exchange requirements/Geolocation MicroMVD
From Wiki.OSArch
The following MicroMVD vocabulary can be used to ensure geolocation information is set.
Feature: Geolocation In order to query data in real world coordinates As a recipient expecting to integrate BIM and GIS datasets Geolocation data must be stored correctly in received files Scenario: Receiving a file * The IFC file "{file}" must be provided * IFC data must use the {schema} schema Scenario: Geometry is georeferenced to a coordinate reference system * There must be at least one IfcSite element * The project must have coordinate reference system data * The name of the CRS must be "{name}" * The geodetic datum must be "{name}" * The vertical datum must be "{name}" * The map projection must be "{name}" * The map zone must be "{name}" * The map unit must be "{unit}" Scenario: Local coordinate systems are specified relative to a global system * The project must have coordinate transformations to convert from local to global coordinates * The eastings of the model must be offset by "{number}" to derive its global coordinates * The northings of the model must be offset by "{number}" to derive its global coordinates * The height of the model must be offset by "{number}" to derive its global coordinates * The model must be rotated clockwise by "{number}" to derive its global coordinates * The model must be scaled along the horizontal axis by "{number}" to derive its global coordinates
You can fill out the variables using the guide below.
Variable | Example | Description |
---|---|---|
{file}
|
project.ifc | The filename or path to any IFC file. |
{schema}
|
IFC4 | The schema version. At the moment, these are likely to be either IFC4 or IFC2X3. |
{name}
|
EPSG:7856 | If this exists in the EPSG registry, the EPSG identifier must be provided. If not, it may be arbitrarily specified as a custom text name. |
{unit}
|
Metre | This case insensitive text value may contain an optional prefix followed by an SI unit or an converted unit |
{number}
|
42.12 | Any numerical value you expect for a particular attribute or property. |