Home > Preview
The flashcards below were created by user
natelh
on FreezingBlue Flashcards.

Polygons are threedimensional and are constructed from elevation points and contour lines Answers: True False
FALSE

Which of the following coverages only require feature IDs and pairs of x,y coordinates:polygon,TIN,line, point
POINT

If an arc joins two nodes, the nodes are said to be adjacent and incident with the arc. True False
TRUE

Which of the following involve the use of the z axis? Answers: polygons,DEMs,polylines TIN
Selected Answer: TIN

TIN data structure includes Lpoly and Rpoly Answers: True False
FALSE

If an arc joins one node to another in the direction toward the other one (say from 15 to 16), it is given an adjacency matrix number of ________
1

The points where arcs meet or intersect are called _____________Answers: TINS,arcs,joints,nodes
nodes

Which of the following cannot contain multiple nodesAnswers: lines, polygons,polylines, points
points

The number ___ in the matrix means an arc is incident from a node, ____ means an arc is incident to a node Answers:
1;1

If you zoom in infinitely on a point... Answers: only the ends disappear, the edges disappear it becomes so small that it can no longer be resolvedit is still there
it is still there

geometric objects used by vector models include all but which of the following. Answers: lines, points, polygons, circles
circles

Graphic files store: class data, spatial data, attribute data, elevation data
spatial data

The _______ is a commonly used vector data model for terrain mapping and analysis, especially for 3D display. Answers: polyline, DEM, polygon, TIN
tin

In a polygon arc list, an arc that outlines a hole is given a value of _____Answers:
0

The vector data model for ArcGIS is called a Answers: TIN, geodatabase, coverage, shapefile
GEODATABASE

