kirra-docs

GeoTIFF Export

Export surfaces as georeferenced raster images for use in GIS software such as QGIS, ArcGIS, and Global Mapper.

Screenshot coming soon

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How to Export

1. Load a surface with a gradient applied
2. Click File > Export > Export Images as GeoTIFF
3. Configure the export settings (see below)
4. Click Export
5. The GeoTIFF file is downloaded

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Export Settings

Setting	Description
EPSG Code	Coordinate reference system for the output file (e.g., EPSG:32755 for UTM Zone 55S)
Resolution Mode	Controls the output pixel density (see table below)

Resolution Modes

Mode	Description	Typical Use
Screen	Uses the cached 2D canvas resolution	Quick preview
DPI	User-specified dots per inch (e.g., 300 DPI for print)	Print-quality reports
Pixels-per-metre	Direct specification (e.g., 10 px/m)	Engineering precision
Full	Maximum resolution export	Maximum detail

Tip: Higher resolution produces larger files and takes longer to export. Choose based on your final use – screen display, printing, or archival.

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What Gets Exported

The GeoTIFF contains:

• Raster data: RGB pixels rendered from the surface gradient (elevation colours, hillshade, scientific colour maps, or texture)
• Geotransform: Maps pixel coordinates to real-world coordinates
• CRS metadata: The EPSG code you selected

The gradient visible in Kirra at the time of export is preserved in the GeoTIFF.

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Use Cases

• GIS integration – Import into QGIS or ArcGIS as a base layer
• Reporting – Generate high-resolution surface images for blast reports
• Archive – Document pre/post-blast surface conditions with embedded coordinates

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Related Topics

• Surface Gradients
• Importing Surfaces
• CSV Export