Autodek FDO Provider for Raster .NET API Reference

AutoDesk FDO Raster .NET API

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.NET API Reference Autodesk FDO Provider for Raster

Introduction

The Feature Data Objects (FDO) API provides access to data in a data store. A provider is a specific implementation of the FDO API that provides access to data in a particular data store. The Autodesk FDO Provider for Raster is a stand-alone file format that supports GIS data.

The FDO Provider for Raster has the following characteristics:
  • The FDO Provider for Raster supports georeferenced file-based raster images and file-based grid coverages. Raster images are pixel-based images, such as digital photographs (satellite images, for example). Raster images are very useful as background images underneath your vector data, for example, an aerial photograph of a city with a layer of streets overlaying it.
  • The FDO Provider for Raster can run in a multi-platform environment, including Windows and Linux.

The following list shows the raster image file formats that are supported, along with their acronyms and file extensions:
  • JPEG (.jpg, .jpeg) - Joint Photographic Experts Group
  • JPG2K (.jp2, .j2k) - Joint Photographic Experts Group
  • MrSID (.sid) - Multi-Resolution Seamless Image Database
  • PNG (.png) - Portable Network Graphic
  • TIFF (.tif, .tiff) - Tagged Image File Format
  • DEM (.dem) - USGS Format Digital Elevation Model
  • ECW (.ecw) - Enhanced Compressed Wavelet
  • DTED (.dt0, .dt1, dt2) - Digital Terrain Elevation Data
  • ESRI ASCII GRID (.asc) - ESRI Surface
  • ESRI Binary GRID (.adf) - ESRI Surface

The following data models are supported:
ModelType BitsPerPixel Organization DataType 
Bitonal 1 Pixel Unsigned Integer 
Grey 8 Pixel Unsigned Integer 
RGB 24 Pixel Unsigned Integer 
RGBA 32 Pixel Unsigned Integer 
Pallete 8 Pixel Unsigned Integer 
Data 1 Pixel Unsigned Integer 
Data 

8 

Pixel 

Unsigned Integer 

Data 8 Pixel Signed Integer 
Data 16 Pixel Unsigned Integer 
Data 16 Pixel Signed Integer 
Data 32 Pixel Unsigned Integer 
Data 32 Pixel Signed Integer 
Data 32 Pixel Float 

Note:
  • Only DEM, TIFF, and ECW images support the ‘Data’ ModelType.
  • All 2- and 4-BitsPerPixel images are promoted to 8 BitsPerPixel as per the underlying ATIL behavior.
For more information, see The Essential FDO (FET_TheEssentialFDO.pdf) and the FDO Developer's Guide (FDG_FDODevGuide.pdf).

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