[gdal-dev] What is the gdal_translate scale exponent option for?

[Matt.Wilkie at yukon.ca]

Hi Folks,

gdal_translate has the option -exponent <exp_val><https://gdal.org/programs/gdal_translate.html#cmdoption-gdal_translate-exponent> to use in conjunction with -scale that will

apply non-linear scaling with a power function. exp_val is the exponent of the power function (must be positive).

This describes what the function does at the mechanical level but not why or when it might be a good idea. What are appropriate scenarios to use this feature? How is it useful and what does it accomplish?
Cross-posted to https://gis.stackexchange.com/questions/403776/what-is-the-gdal-translate-scale-exponent-option-for


Matt Wilkie
Geomatics Developer & Administrator
Environment | Technology, Innovation and Mapping
T 867-667-8133 | Yukon.ca<http://yukon.ca/>
Hours: 08:30-16:30, Mon-Wed: Office, Thu: Remote, Fri: Away.

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