Coordinate Tool

Measure precise 3D coordinates in the model - useful for geodata alignment and survey checks.

Activate Tool

1. Click Toolbox in the toolbar
2. Select "Measure Coordinates"
3. The cursor becomes a crosshair

Read Coordinates

1. Click or tap on a surface in the model
2. Coordinates appear in the overlay:
   • X (East) - Easting coordinate
   • Y (North) - Northing coordinate
   • Z (Elevation) - Height above reference plane

Geodetic Format

Coordinates are displayed in geodetic format (Z-up). The model internally uses xeokit's Y-up system - the transformation occurs automatically.

Move Display

The coordinate display can be freely positioned:

1. Desktop: Drag the title bar with the mouse
2. Mobile: Touch and drag the title bar

The overlay stays at the chosen position until you deactivate the tool.

End Tool

Click "End Coordinates" in the toolbox again.

Use Cases

Survey Verification

Check if BIM coordinates match survey data:

1. Open the coordinate tool
2. Click on prominent points (building corners, etc.)
3. Compare with your survey data

Geodata Alignment

When importing geodata (GeoJSON, Shapefile, KML), you can check the coordinates:

1. Measure coordinates in the BIM model
2. Import geodata via Import Geodata
3. Check if the coordinate systems match

Position Determination

Determine the exact position of an element in space:

• Useful for construction site planning
• Helpful for logistics (delivery, crane operations)
• Important for surveying and staking out

Coordinate Systems

BIM AVA supports various coordinate systems (EPSG). The system used depends on the IFC model.

Supported EPSG Codes:

EPSG	Name	Usage
25832	ETRS89 / UTM zone 32N	Germany (Standard)
4647	ETRS89 / UTM zone 32N (zE-N)	Germany (Surveying)
8395	ETRS89 / Gauss-Krüger CM 9E	Hamburg, Northern Germany
4326	WGS 84	GPS coordinates (Lat/Lon)
3857	Web Mercator	Online maps (Google Maps, OSM)
31467	DHDN / 3-degree Gauss-Krüger zone 3	Old German surveying

Check Coordinate System

The coordinate system used is in the IFC file under IfcProject → RepresentationContexts → CoordinateSystem. If in doubt, ask your planner.

Tips

Precise Measurement

Zoom in closer for more accurate clicking on the desired position.

Multiple Points

You can click multiple points in sequence. The overlay always shows the coordinates of the last clicked point.

See Also

• Measurement Tool - Measure distances between points
• Annotations - Import geodata
• 3D Viewer - Navigation and tools
• Mobile & Touch - Coordinates on touch devices