mid 2 Flashcards
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2
How does lidar measure distance
It is an active sensor
It shoots a laser beam that bounces on a surface and senses how long it took
What does DEM stand for
Digital Elevation Model
What are the two types of contour lines on a topographical map?
Index(thick one, the one your eye catches)
in between(supplemental interval lines divide into 5)
What are the three main geometries in GIS, symbolize and analyze
vector data
feature data is images (can be lidar(raster)
Point, line, Area
Name the 4 types of analyses we discussed
Point pattern, proximity, correlation, autocorrelation
4 answers
which is not one of our 4 patterns
uniform- the whole map is consistent(predict one part of the map is the same as the other)
cluster-grouped in map
random- testing how clustered it is
scatter
scatter
One way to symbolize point data
name three ways to change its symbology
Color, shape, and size
How are three ways you can symbolize line data
color, style, and size
Name two ways you can symbolize a polygon
pattern(stripe poka dot) and color
With GIS we often set a classification In a certain
they are equal
equal-interval
classified where things are clusters
naturally placed
around the whole range
natural interval
looking at distribution curve
and that is the distribution
quantile
This classification is set by the map maker
manual