Exam Questions and CORRECT Answers
digitizing - CORRECT ANSWER✔✔- data editing
node - CORRECT ANSWER✔✔- endpoint of a line/polygon
vertices - CORRECT ANSWER✔✔- start/stop point of a feature
arcs - CORRECT ANSWER✔✔- lines connecting vertices/nodes
dangling node - CORRECT ANSWER✔✔- part of a polygon that sticks out
open polygon - CORRECT ANSWER✔✔-
snapping - CORRECT ANSWER✔✔- ensures nodes of lines and polygon vertices match
auto complete polygon - CORRECT ANSWER✔✔- used to fix overlapping polygon
map topology - CORRECT ANSWER✔✔- features adjacent or connected to each other
using a construct
shapefile vs geodatabase feature class - CORRECT ANSWER✔✔-
what is root mean square error 1. and what does it have to do with digitizing or scanning? -
CORRECT ANSWER✔✔- it measures accuracy of the transformation and is reported in
map units of new coordinate system
digitzing-
image formats you can use - CORRECT ANSWER✔✔-
, clip - CORRECT ANSWER✔✔- truncate features of 1 file based on outline of another
the (polygon) feature class providing the boundary
erase - CORRECT ANSWER✔✔- keeps features falling outside erase layer and eliminating
those inside
intersect - CORRECT ANSWER✔✔- merges attributes but retains only areas in both layers
and is done with points,lines,polygons
union - CORRECT ANSWER✔✔- combines 2 polygon layers keeping all areas and merging
attributes for both layers
buffer - CORRECT ANSWER✔✔- a spatial query that delineates areas that fall within a
certain distance of a set of features
append - CORRECT ANSWER✔✔- copies features from 1+ input data sets to a target data
set that already exists
merge - CORRECT ANSWER✔✔- combines features of 2+ feature classes and puts them
into a new feature class.
passive remote sensing data - CORRECT ANSWER✔✔- reflection of sun energy by
photos/satellite
active remote sensing data - CORRECT ANSWER✔✔- radar, lidar
electromagnetic spectrum - CORRECT ANSWER✔✔- All of the frequencies or wavelengths
of electromagnetic radiation
roygbiv