Az spatial data standards

Arizona Spatial Data Accuracy and Georeferencing Standards
Standards for the acquisition and evaluation of geospatial data
with explanatory remarks and examples

Geospatial Committee Arizona Professional Land Surveyors Association Arizona Geographic Information Council
in cooperation with the of the

Prepared by the

Version 3.1 November 8, 2008

Electronic versions areavailable at http://www.azpls.org and http://agic.az.gov

Arizona Professional Land Surveyors Association Arizona Geographic Information Council

Arizona Spatial Data Accuracy and Georeferencing Standards
Table of Contents
List of authors, contributors, and reviewers.................................................................................... 2Introduction..................................................................................................................................... 3 Arizona Spatial Data Accuracy and Georeferencing Standards ..................................................... 3 I. Positional Accuracy........................................................................................................... 3 A. Accuracy confidencelevel .......................................................................................... 3 B. Point feature positional accuracy ................................................................................ 4 C. Polyline and polygon feature positional accuracy....................................................... 6 D. Surface model verticalaccuracy.................................................................................. 6 E. Control survey requirements ..................................................................................... 10 II. Coordinate System Definition ......................................................................................... 12 A. Linear unit................................................................................................................. 12 B. Geometric reference system ...................................................................................... 12 C. Map projection .......................................................................................................... 14 D. Vertical datum........................................................................................................... 14 III. Documentation ................................................................................................................ 17 A. Metadata .................................................................................................................... 17 B. Feature-level metadata.............................................................................................. 17 C. Project report ............................................................................................................. 17 IV. Performance Requirements ............................................................................................. 17 A. Responsible charge for datacollection...................................................................... 17 B. Independent accuracy determination......................................................................... 18 C. Accuracy evaluation criteria...................................................................................... 18 D. Primacy of project scope ........................................................................................... 19 V.Currency of Standards and Specifications....................................................................... 19 A. Updating of Standards ............................................................................................... 19 Glossary ........................................................................................................................................ 19...