GIS Dictionary

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raster layer

[ESRI software] In ArcGIS, a layer that references a raster as its data source and a raster renderer that defines […]

raster postprocessing

[data conversion] In ArcScan, the automatic correction of vector feature results immediately after batch vectorization is completed. Postprocessing involves generalizing

raster preprocessing

[data conversion] Simple raster editing that prepares images for viewing and analysis. Preprocessing includes georeferencing, clipping, positioning, resizing, enhancing, and

raster statistics

[ESRI software] Statistics that are calculated from the cell values of each band in a raster. The statistics that are

raster tracing

[data conversion] An interactive vectorization process that involves drawing along the boundary of contiguous raster cells to create vector features.

raster type

[data models] In ArcGIS, identifies metadata, such as georeferencing, acquisition date, and sensor type, along with a raster format.

rasterization

[data conversion] The conversion of points, lines, and polygons into cell data.

rasterized feature layer

[ESRI software] A feature layer in ArcGlobe that exists as points, lines and polygons but is rendered as cell data.

ratio data

[data structures] Data classified relative to a fixed zero point on a linear scale. Mathematical operations can be used on

ratioing

In digital image processing, enhancing the contrast between features in an image by dividing the values of pixels in one

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