GEODESIAS · Geospatial Services

GEODESIAS · Geospatial Services

Mapping, CAD and BIM

Mapping, CAD and BIM

We connect cartographic information, technical drawings and digital building models. Services include GIS/CAD conversion, checking geometry, units and coordinates, integration of selected BIM information into a geographic context, and preparation of spatial representations of buildings and infrastructure. We also check the integrity of exchanged files.

Requirements addressed by these services

Services and expected deliverables

CAD and GIS File Exchange

We convert between mapping formats and technical drawings while checking coordinates, units and geometry.

  • Documented GIS–CAD File Conversion

    Site data arrive in incompatible GIS or DXF files.

    Expected deliverables: GIS-derived CAD plan in DXF with an EPSG reference record; reimported CAD geometry set in GPKG or DXF with comparison; GIS–CAD transformation report in MD or CSV.

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CAD Drawing Adjustment and Cleanup

We review and prepare CAD drawings, correcting organization, geometry and spatial-reference problems.

  • Indicative CAD/GIS Coordinate and Unit Adjustment

    A drawing is misaligned with reference cartography and needs the discrepancy characterized.

    Expected deliverables: Displacement map, transformation matrix and test DXF.

  • Geometric Cleanup of an Imported DXF Drawing

    Received CAD entities are open or duplicated and must become a usable GIS layer.

    Expected deliverables: GPKG with corrected issues and list of excluded features.

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BIM Model Integration with Mapping

We link selected BIM model information with geographic data for joint viewing and querying.

  • Indicative Integration of BIM Geometry into GIS

    IFC models are disconnected from their geographic context.

    Expected deliverables: GIS extraction of IFC elements in GPKG with IFC GUID identifiers and CRS JSON; BIM–GIS semantic-loss matrix in CSV or MD; IFC georeferencing report in MD or JSON.

  • Spatial Inventory of Selected IFC Objects

    Map and tabulate BIM objects filtered by class or property.

    Expected deliverables: IFC object CSV and informative GIS geometries with traceable IDs.

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Positioning Construction Models on Maps

We position digital building and infrastructure models within maps of their surrounding area.

  • Viewing a Construction Model in Geographic Context

    Place exportable BIM geometry in a scene relative to the terrain.

    Expected deliverables: Contextual 3D scene and screenshots with stated units/transformation.

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CAD/BIM File and Conversion Review

We check preservation of geometry, attributes and references during exchange between technical formats.

  • Inventory of 3D and IFC Format Incompatibilities

    Plan a migration without silent losses of 3D geometry.

    Expected deliverables: Format/version/unit/CRS matrix, unsupported geometries and test results.

  • CAD–GIS Round-Trip Entity Preservation Matrix

    Check for loss of layers, geometries or attributes during conversion.

    Expected deliverables: Feature counts, discrepancies and conversion limitations table.

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