UNDERSTANDING ERRORS AND THEIR MEASUREMENT IN GEOINFORMATION

1Ndehedehe, C., 2Ekpa, A., 3Okwuashi, O. and 4Ogunlade, S.
1, 2 & 3Department of Geoinformatics & Surveying,
University of Uyo, Uyo, Nigeria
4Department of Surveying and Geoinformatics,
Federal University of Technology, Akure, Nigeria

ABSTRACT

Managing error in GIS datasets is now recognized as a substantial
problem that needs to be addressed in the design and use of such
systems. Failure to control and manage error can limit severely or
invalidate the results of a GIS analysis. The various sources of errors that may affect the quality of a GIS dataset have been highlighted in this paper. One major approach in managing error in a GIS datasets is documenting procedures, products and producing data quality reports. Another is setting of standards and procedures for product.