General GIS terms | |
| Terms that are on used on this site.
| |
| You can always search for entries (regexp permitted). | ||
|
View Glossary Submit Term | ||
| R | ||
| There are 2 entries in the glossary. | ||
| Pages: 1 | ||
| Term | Definition | |
| raster |
Raster
data type consists of rows and columns of cells where in each cell is
stored a single value. Most often, raster data are images (raster
images), but besides just color, the value recorded for each cell may
be a discrete value, such as land use, a continuous value, such as
rainfall, or a null
value if no data is available. While a raster cell stores a single
value, it can be extended by using raster bands to represent RGB (red,
green, blue) colors, colormaps (a mapping between a thematic code and
RGB value), or an extended attribute table with one row for each unique
cell value. The resolution of the raster dataset is its cell width in
ground units. For example, in a LIDAR
raster image, each cell is a pixel that represents an area of 3 meters
by 3 meters. Usually cells represent square areas of the ground, but
other shapes can also be used.
Source: Wikipedia
| |
| reverse geocoding | Reverse geocoding is the process of returning an estimated street
address number as it relates to a given coordinate. For example, a GPS coordinate is reported
across a wireless network(thus providing a coordinate) and
have information returned that reflects the estimated house number.
Source: Wikipedia | |
| Glossary V2.0 | ||
Glossary