answers to mid-term intro gis spring 2008 paul c.sutton [email protected] department of geography...
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![Page 1: Answers to Mid-Term Intro GIS Spring 2008 Paul C.Sutton psutton@du.edu Department of Geography University of Denver](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d545503460f94a317bc/html5/thumbnails/1.jpg)
Answers to Mid-Term Answers to Mid-Term Intro GIS Spring 2008Intro GIS Spring 2008
Paul C.SuttonPaul C.Sutton
[email protected]@du.edu
Department of GeographyDepartment of Geography
University of DenverUniversity of Denver
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Overall Results: Mean 72.5
40 50 60 70 80 90 100
100.0%
99.5%
97.5%
90.0%
75.0%
50.0%
25.0%
10.0%
2.5%
0.5%
0.0%
maximum
quartile
median
quartile
minimum
92.000
92.000
92.000
89.600
81.000
76.000
64.000
47.400
41.000
41.000
41.000
Quantiles
Mean
Std Dev
Std Err Mean
upper 95% Mean
lower 95% Mean
N
72.529412
13.569809
3.291162
79.506364
65.55246
17
Moments
Mid-Term
Distributions
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Multiple Choice
• Page 1: #1) D #2) E #3) A
• Page 2: #4) D #5) B #6) B #7) D #8) C #9) E
• Page 3: #10) A #11) E #12) B #13) D
#14) D #15) B
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The Globe and Scale• 1 meter to 40,000 km is 1:40 million scale
• 10 cm to 1 meter is .1 &
.1 of 40,000 km is 4,000 km
If it takes 1 meter to go all the way around
(40,000 km) it should take half a meter to go
Half way around (20,000km) e.g. 50 cm
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Many to One, One to Many oh my
One to One relationship
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One to Many Relationship
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Many to One
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DEM (Digital Elevation Model) DEMs are Rasters
Good for representingA continuous surfaceAnd Hydro modeling
![Page 9: Answers to Mid-Term Intro GIS Spring 2008 Paul C.Sutton psutton@du.edu Department of Geography University of Denver](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d545503460f94a317bc/html5/thumbnails/9.jpg)
TIN Triangulated Irregular Network
TINs are VectorData – Basically
Points with ElevationAttributed connceted viaDelauney Triangulation
Better for some rapidGeo-viz applications
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What is a GIS?• The hardware, software, and human capital
needed to store, manipulate, analyze, and display spatially referenced information.
• Problems uniquely suited to GIS…
• 1) Site selection for habitat preservation
• 2) Evaculation analysis and Management
• 3) Storing Census Data…..
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Vector To Raster Conversion1
1
0
1
1
2
33
1 = Deer 2 = Coyote 3 = Penguin
1 = Land 0 = Sea
1 0 0 0 00 0 0 0 10 2 0 0 00 0 0 3 00 31 0 0 0
0 0 0 0 20 0 2 2 20 0 2 0 12 2 2 1 12 1 1 1 1
Rules youUse will Vary…
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