mid 2 Flashcards
(25 cards)
1
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
Give me an example of a strong, positive autocorrelation
temperature
give me two examples of normalized data
number of people per area, takes one data set and does something to it to process it
population density
give me two examples of non normalized data
people per area
grass grown
raw data
explain an ecological fallacy
all college students are broke
a sample must be the same as the average
voting for teams(dogers or the other)
representing on what could be the minorty
this type of redistricting seems to consolidate and redefine bonders of districts to define a majority
gerrymandering
one alternative to projection maps like election data
to traditional spacial mapping
election results as equal polygons
cartogram
(a map that doesn’t neceasriyl mean shape is accurate)
add from slide
what kind of mapping is unbias
none
what kind of (inherent errors lies) do mapp makers need to look for
projection has data that is generalizing(earth is not 2d)
just making mistakes(being human)
what is a pernicious lie(malicious)
gerrymandering- chnaging how data is perceived by redifing boundering
propaganda
copyright infringement- iusiong a map and naming it their own
projection- intentionally like move the equation northward so other countries look better
