Run-length encoding stores data by row. If two or more adjacent cells in a row have the same value, the 'run' is recorded, as opposed to recording an individual value for each cell. The more adjacent columns having the same value, the greater the compression. A picture of the earth taken from an earth-orbital satellite. A map element that shows the map scale graphically.
Some scanners also use software to convert raster data to vector data.
A temporary file holding intermediate data during an operation, such as when calculating arc intersections, or building feature topology. A United States Federal standard designed to support the transfer of different types of geographic and cartographic spatial data. This standard specifies a structure and content for spatially referenced data in order to facilitate data transfer between dissimilar spatial database systems. TVP addresses a wide variety of vector data types, models, and structures, as well as associated attribute data. SEC Section table for the section feature class in a coverage.