GIS Vocab 1

spatial data

precise location and shape of geographic feature as points, lines, or polygons or grid cells

aspatial data

location based data linked with descriptive information

discrete data

represents distinct features with definable boundaries known as categorical or vector data

continuous data

vary gradually across surface without distinct boundaries known as rasters

nominal data

names or uniquely identifies objects

categorical data

places features into defined number of distinct categories

ordinal data

categorical data and ranks categories along arbitrary scale

interval data

places values along a regular numeric scale like temp, pH, elevation

ratio data

places value along regular scale with meaningful zero point like population, rainfall, rent