Digital Terrain Model of Montreal as Triangular Mesh

A digital terrain model (DTM) representing ground altimetry for Montreal as an irregular triangular mesh (TIN). The data is provided in XML, GML, and DXF formats for planning purposes, with decimeter-level detail. It serves as a foundational layer for 3D building models of the city.

Use Cases

• Generate 3D urban visualizations by integrating the TIN mesh with CityGML LOD2 building models.
• Perform terrain analysis for urban planning using the decimeter-resolution ground altimetry data.
• Use the irregular triangular mesh (TIN) data as a base layer for hydrological or viewshed modeling in Montreal.

Strengths

• Data is provided in multiple interoperable formats including XML, GML, and DXF.
• Designed as a foundational component for integration with specific 3D building models of Montreal.
• Explicitly intended for urban planning applications with stated decimeter-level detail.

Limitations

• Data is described as for planning, not construction, implying potential accuracy limitations for engineering use.
• Specific spatial extent, resolution, and point density are not quantified in the provided metadata.
• No sample data or structural details (e.g., vertex count) are available to assess complexity.

Provenance

Source

Government and Municipalities of Québec

Collection Method

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Time Range

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Freshness

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Geography

Montreal, Québec