.SDW File Extension

A .SDW file is a StarOffice Writer Text Document, created by LizardTech.

Open with ESRI ArcGIS for Desktop. Available for Windows.

What is a .SDW file?

The file extension .SDW represents a StarOffice Writer Text Document, which is primarily associated with GIS (Geographic Information Systems) data. Specifically, it is used for MrSID (.SID) raster images. These raster images are a type of highly compressed image file used in mapping and aerial photography.

The .SDW file contains important georeferencing information. This means it includes data that helps map the raster image data (the .SID file) to actual locations on the earth's surface. This file specifies how the image corresponds to real-world coordinates, ensuring that each pixel in the image is accurately placed geographically. It also details the units of measurement used for the image pixels and provides the coordinates for the upper-left hand pixel of the image, which is crucial for aligning the image correctly in GIS applications.

To open .SDW files, you can use specific GIS software programs that are capable of handling geospatial data and georeferencing information. Some of the programs that can open .SDW files include: 1. **ESRI ArcGIS for Desktop** - A popular GIS software used for creating and managing geographic information. 2. **Blue Marble Geographics Global Mapper** - Another GIS tool that supports a wide range of data formats and includes functionality for spatial data editing, mapping, and analysis. 3. **GDAL (Geospatial Data Abstraction Library)** - An open-source translator library for raster and vector geospatial data formats that is very useful in handling various types of geospatial data.

Additionally, since .SDW files are saved in a plain text format, they can also be viewed using any standard text editor. This allows users to see and edit the raw data if necessary, although modifying georeferencing data manually requires careful attention to detail to avoid errors in data interpretation.

In summary, .SDW files are crucial for accurately mapping raster images to real-world locations in GIS applications, and they can be opened and managed using specialized GIS software or a simple text editor for viewing purposes.


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