GIS Dictionary

[data capture] A method of manual digitizing in which the operator has no graphic display on hand with which to see the digitized coordinates as they are captured.

1 [database structures] Acronym for binary large object. A large block of data, such as an image, a sound file, or geometry, stored in a database. The database cannot read … Read more

[ESRI software] In ArcGIS, a group of records in a compressed file geodatabase feature class or table that are stored together. The arrangement of compressed data into blocks helps optimize … Read more

[non-ESRI software] In CAD, a collection of objects that can be associated to form a single object.

[federal government] A unit of U.S. census geography that is a combination of census blocks. A block group is the smallest unit for which the U.S. Census Bureau reports a … Read more

A kriging method in which the average expected value in an area around an unsampled point is generated rather than the estimated exact value of an unsampled point. Block kriging … Read more

[ESRI software] In ArcGIS, a geocoding indexing process that reduces the number of potential matches that need to be checked.

[surveying] In surveying, a defective measurement that can be detected by a statistical test.