# GRASS Help System

## WELCOME TO THE GRASS ON-LINE GLOSSARY

Listed below is a compilation of the most commonly used GIS and GRASS terms. To access information on a term, highlight the term using the RETURN key, then press ESC.

## A

arc arc-node area
aspect attribute

## B

band band file Boolean operations

## C

Cartesian coordinate system category
category label category value Cathode Ray Tube
cell cell file cell map
centroid class classification
control points

## D

DBMS DEM DLG
DMA DTED
Data Base Management System database
database element digit file digital data
Digital Elevation Model digital imagery
Digital Line Graph Digital Terrain Elevation Data
digitize digitizer
digitizing threshold display coordinate system
driver

## E

easting editing element

## F

file

## G

GIS geocoding
Geographic Information System geographic region
graphics display frame graphics monitor grid format
grid map grouping

## H

hardcopy

## I

image image processing import
interactive island

## J

join

## L

LANDSAT label layer
legend line location
LOCATION

## M

MSS map coordinate system map database
map feature map generalization map layer
map threshold mapset mask
menu monitor mouse
Multispectral Scanning System

## N

neighborhood analysis no data category node
northing null category

## O

overlay

## P

plane coordinates point pointing device
polygon projection pruning

## R

raster data raster file raster map
raster-to-vector reclass rectification
registration remote sensing residual
resolution

## S

SPOT scale scanning
screen coordinates search path site
site map snap snapping threshold
state plane coordinate system support files

## T

TM tablet target
threshold topographic map topology
transform

## U

UNIX UTM UTM zone
Universal Transverse Mercator

## V

vector vector data vector file
vector map vi

## W

window workstation

## Z

zone zoom

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Automatically created on: Wed Oct 12 14:08:42 2005