FAQ
LOS to PGM Conversion
What are LOS files?
LOS (Longitude Seconds) is a grid file of NADCON, the North American Datum Conversion tool of the U.S. National Geodetic Survey (NGS). It holds the east-west part of the correction that moves coordinates from an older datum, such as NAD27, to a newer one, such as NAD83, and it is always used together with a file of the same name with the .las extension, which holds the north-south part. Each file covers a region, such as the conterminous United States, Alaska, or Hawaii, with a regular net of points, and every point carries a shift in seconds of arc. Surveyors and mapmakers used these pairs for decades to bring older maps and survey records into agreement with modern positions.
What are PGM files?
The PGM or Portable Graymap format is part of a package of open source graphics programs called Netpbm. Other Netpbm formats include PPM (Portable Pixmap) and PBM (Portable Bitmap), also known under the collective name of PNM (Portable Anymap). A PGM file includes a grayscale image, can work on a UNIX platform, as well as on Windows or Mac OS X, and can render a scope of up to 255 grayscale colors.
Can reaConverter convert LOS to PGM?
Yes! reaConverter instantly converts .los to .pgm with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.
What is reaConverter used for?
reaConverter is a Windows converter for 800+ formats, GIS data among them. For LOS to PGM it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.
Why choose offline conversion with reaConverter?
reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.
Can I convert LOS to PGM online?
If you only need to convert a few LOS files to PGM format, feel free to try our free online free online LOS to PGM converter — perfect for small batches with no installation needed!
How can I turn LOS files into PGM on my computer?
The best way to change LOSs to PGMs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from LOS to PGM.
How can I automate LOS to PGM files conversion?
reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.
Is there a way to convert LOS files to PGM using the command prompt?
reaConverter provides full access to all its features via Windows command line, including a high-performance command-line los to pgm converter for batch processing.
What else can I do with reaConverter?
Convert RAW photosConvert GIS filesConvert Gerber filesChange color spaceConvert PDF files
Related conversions
Other ways to convert LOS files, and other sources that convert to PGM.
