Source Feature Type Catalogues

This section goes deeper into understanding the usage of Source Feature Catalogs, meant for people who create conversion rule sets.

The goal is to create Quadri Models that have content that is well-defined, according to a standard definition of feature types, but most formats today are not well-defined when it comes to classifying their information or features.

 typical questions are  : 

how to import information from a typical CAD file, where the information is mainly coded using a flat structure of layer names? or How you as a user can be informed about what is converted and what is not converted?

Quadri has a solution where the file first is read into an intermediate Quadri Model, using the source (format-near) Feature Type Catalogue, where the feature types are defined based on the original structure of the format itself.  Back to the example with layer-based CAD files; The format-near Feature Type Catalogue for CAD files includes feature types like “CadPoint”, CadCurve, CadSurface, etc. Each feature type has the capability of containing all the typical CAD-element information, like Layername, LayerColor, LayerDescription, etc.

When the file is read into the intermediate Quadri Model, we can present it, using either plan or 3D window inside quadri for windows. In this way, we can present the content of the file, before it is converted to the features we want in the target Quadri Model.

When you select a conversion rule and click preview to see the result (still before finishing the import process), we're able to show you what was converted and what was not converted.

You can now click items that were not converted, and read in the Properties panel, what this is.

The idea is that Quadri should always be able to read ALL information from a file and present it to you.

But to get ALL of this information into the target Quadri Model, the conversion rulesets used, needs to have a rule for all the information.

List of all Source Feature Type Catalogues

Name and Description 

• NDVB: Native Data Versioned Binary, a format used for storing and managing versioned data in Quadri. 

• Delimited Text: A text file format where fields are separated by a specific character (e.g., comma, tab) to delineate data entries.  

• DSFL: Danish Standard File Format, commonly used for geospatial data in Denmark. 

• DWG: A widely used format for CAD (Computer-Aided Design) drawings developed by Autodesk.

•  ESRI ASCII GRID: A grid format used by ESRI software to represent raster data. 

• ESRI Shape: A popular vector format for geographic information system (GIS) software, storing geometric location and attribute information. 

• GML: Geography Markup Language, an XML-based format for encoding geographic information.

• GSD: Ground Sample Distance, indicating the distance between pixel centers measured on the ground. 

• KOF: A format used for infrastructure data exchange, particularly in the context of Nordic countries.

•  LandXML: An open XML data standard for civil engineering and surveying data. 

• Laser Data: Point cloud data captured using LiDAR technology, used for detailed 3D modeling.

•  QuadriG4: An earlier version of the Quadri model format, used for storing and managing infrastructure data.

•  Quadrimodel: The data model used in Quadri for storing, managing, and visualizing infrastructure data. 

• RUT: A format used for road and transport data exchange. SOSI: A Norwegian standard format for geospatial data exchange.

Next topic: Quadri G4