What is a "Nodata value"
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(Difference between revisions)
(Created page with "A nodata value simply is a pixel value in a raster map containing no information. It is ''not to be confused'' with a pixel value of ''0'' (zero). E.g. in a map with temperature...") |
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| − | A nodata value simply is a pixel value in a raster map | + | A nodata value simply is a pixel value in a raster map representing no information. It is ''not to be confused'' with a pixel value of ''0'' (zero). |
E.g. in a map with temperatures of a surface in °C, a pixel value of 0 represents a temperature of 0 °C, while a nodata-pixel simply represents a part of the surface where no information on the temperature is available. | E.g. in a map with temperatures of a surface in °C, a pixel value of 0 represents a temperature of 0 °C, while a nodata-pixel simply represents a part of the surface where no information on the temperature is available. | ||
[[category: Terms and definitions]] | [[category: Terms and definitions]] | ||
Revision as of 11:42, 18 February 2011
A nodata value simply is a pixel value in a raster map representing no information. It is not to be confused with a pixel value of 0 (zero).
E.g. in a map with temperatures of a surface in °C, a pixel value of 0 represents a temperature of 0 °C, while a nodata-pixel simply represents a part of the surface where no information on the temperature is available.
