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What is the .SDL File Extension?

.SDL File Extension Description:

The .sdl file extension uses an ASCII format, which is used by several map authoring tools for the World Wide Web. The modules MapGuide SDL Reader and Writer enable FME to comprehend and write files with the .sdl file extension. The .sdl file extension data can be two dimensional (2D) or three dimensional (3D). The SDL files can either save geometry and attributions or both. The datasets of SDL Logical can contain more than one file located in the same directory with the .sdl file extension.

The SDL reader and writer support the storage of geometric data such as line, point and polygon within the SDL files. To match with the MapGuide, the result files has only a single type of geometry, though the SDL file may not contain non-geometry features, and these kinds of features are referred to as containing geometry of none.

The SDL Reader works by initially scanning the directory where the files with the .sdl file extension are located, which are described in the mapping file. For further processing, the features are extracted one by one by the SDL Reader, and the files in the SDL file extension are passed on to the remaining FME. When a single file with the .sld file extension is provided as a dataset, only that file containing the dataset is read.

The SDL Writer performs its job by producing every type of feature in a separate file; this is to conform to the AutoDesk MapGuide. Every functionality that has been produced is associated with the following name, vertices, URL (Universal Resource Locator), and an ID. A special feature attribute of the FME is its ability to command the SDL writer while it is rendering a certain feature to become an image. The attribute that controls the entire interpretation of a specific feature is called the sdl_type attribute, and its right values are sdl_line, sdl_polygon and sdl_point. Other attribute names are as follows sdl_url, sdl_name and sdl_id.

Author: Autodesk, Inc.
Author URL:
Related Applications: Autodesk MapGuide SDL Reader and Writer
Common Path: User-defined


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The Usual Cause of .SDL files Errors to Occur:

A typical and frequent reason for .SDL files errors is damage in the Windows program registry - fixing is required to protect against more corruption in other software and/or hardware devices. Risks include system device damage, blue screen errors and fatal software crashes.

Symptoms of .SDL files Errors:

Common symptoms from .SDL files errors include slower pc performance, extended software start up speed, problems loading files, extended breaks in application procedures, applications shuts down without displaying an indication of error, input freezes and applications lock up.

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