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Wednesday, February 17, 2010

Sunday, February 7, 2010

Flo TV

OK...the Super Bowl commercials got my attention. Take a look at the coverage map. I don't anticipate many subscribers in the Middle GA area

http://www.flotv.com/whats-on-flo-tv/map

Thursday, February 4, 2010

Vector and Raster Data

Vector Data:Vector is a data structure, used to store spatial data. Vector data is comprised of lines or arcs, defined by beginning and end points, which meet at nodes. http://www.geom.unimelb.edu.au/gisweb/GISModule/GIST_Vector.htm



Raster Data: In its simplest form, a raster consists of a matrix of cells (or pixels) organized into rows and columns (or a grid) where each cell contains a value representing information, such as temperature. Rasters are digital aerial photographs, imagery from satellites, digital pictures, or even scanned maps. http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=What_is_raster_data%3F

The cells in a raster


2.5D (i.e. video games) Here's a really bad video game: http://www.youtube.com/watch?v=qItugh-fFgg

4D = Time factor (i.e. weather wap with time progression):
http://www.intellicast.com/Local/wxmap.aspx

Drunk Driving in Toronto

http://thestar.blogs.com/maps/2010/01/drunk-driving-map-with-allontario-coverage-and-video.html

Wonder what the cell phone and texting while driving maps would look like. http://www.oprah.com/packages/no-phone-zone.html

Chances of an accident:
Sober = Control
Drunk driving = 4x more likely
Talking on phone = 4x
Texting = 8x


Tuesday, February 2, 2010

Thursday, January 28, 2010

Tuesday, January 26, 2010

Map

Mercer Mercators

Map Projections

1. Mercator Projection - cylindrical map
http://en.wikipedia.org/wiki/File:Mercator-projection.jpg

Characteristics of Mercator Projections:
Conformal - angles and shapes in a small area are essentially true
Areas and shapes of large areas are distorted outward from equator - extreme in polar regions
Distances are true along the equator +/- 15 degrees
Special scales can be used to correct for areas away from equator

2. Mollweide Projection - pseudocylindrical map
http://en.wikipedia.org/wiki/File:Mollweide-projection.jpg

3. Transverse Mercator - distortions are greater along the equator and true at the poles
http://bit.ly/5f3VHA
http://www.uwgb.edu/DutchS/FieldMethods/UTMSystem.htm

4. Oblique Mercator
http://www.sedris.org/stc/2002/tu/srm/img051.gif
Create zones (+/- 15 degrees) for true measurements of sample area

Look at advantages/disadvantages of each:

Miller cylindrical
Robinson
Sinusoidal equal area
Orthographic
Stereographic
Gnomonic
Azimuthal equidistant
Lambert azimuthal equal area
Albers equal area conic
Lambert conformal conic
Equidistant conic (simple conic)
Polyconic

http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html

Monday, January 25, 2010

ESRI - ArcUser Magazine - Winter 2010

Remapping the world's population-visualizing data using cartograms
http://www.esri.com/news/arcuser/0110/cartograms.html

GIS -based project supports college's commitment to climate neutrality
http://www.esri.com/news/arcuser/0110/green-mountain.html

Check out the digital copy for more articles and project ideas!

Sunday, January 24, 2010

Geocaching in Macon

The Mercer Geoaching Club just received a $1,100 grant from the Knight Neighborhood Challenge for geocaching along the corridor. Check us out at http://www.facebook.com/group.php?gid=125219830753&ref=nf

Map of geocaches around Mercer. Check out the satellite and topo maps too!
http://www.geocaching.com/map/default.aspx?lat=32.82876&lng=-83.6511

Geocaching....what is it?
http://adventure.howstuffworks.com/outdoor-activities/hiking/geocaching.htm/printable

Friday, January 22, 2010

Aqua

http://www.ocmulgeeriverinitiative.org
Is this a good map? Does the color variation from top to bottom have any meaning?

Find the Upper Ocmulgee Watershed
http://www.georgiaadoptastream.com

Thursday, January 21, 2010

Google Maps Mania: MapAction in Action in Haiti

Google Maps Mania: MapAction in Action in Haiti

NFL


Major League Soccer

AWFUL...ENOUGH SAID

EPL Maps

English Premier League
http://www.northvillesoccer.org/EnglishPremierLeague2008-2009.pdf




Here are three maps of the English Premier League (I can't get Map #1 to work on Blogger). Cut and paste the URL to see the map (this is the best of the three maps). Whoever made it overlapped the club logos on an existing map meant to show city locations, populations, and major motorways. The logos do cover up some of the legend and the scale, but the distances and populations are not really what is important here. The locations of the clubs are what matters and if you look at London, the creator nailed it (Tottenham is in North London, Fulham and Arsenal are central, Chelsea in West London, and West Ham ironically is located in East London http://en.wikipedia.org/wiki/West_Ham_United_F.C.

Map #2 is a basic map with club logos and basic geographic locations. Look at the London clubs (they are grouped together, but not in the proper geographic orientation). This map is from the 2002-2003 season (Charlton was in the EPL). Every year, the bottom two teams are relegated (demoted) to Division 2 and the top two Division 2 teams are promoted to the EPL. Keeps things fresh and gives all teams something to place for. Imagine if the Washington Nationals had to play in the Minor League and the Durham Bulls moved up to MLB.

Map #3 is just too busy and a terrible map for the purpose of club locations (no logos and the font of the teams is very hard to read).


















Sunday, January 17, 2010

A Peek Into Netflix Queues

Check out this interactive map and share your thoughts.

http://www.nytimes.com/interactive/2010/01/10/nyregion/20100110-netflix-map.html

Haiti Blog with Maps

A lot has been happening with the Haiti deployment, much of it is coordinating with the other teams who are working on crisis mapping and digital tools.

http://blog.ushahidi.com/index.php/2010/01/15/haiti-update

Thursday, January 14, 2010

1/14/2010

Daily 411

Books: Only need to buy "Getting to Know ArcGIS" (other books will be available in lab)
External hard drives passed out (they are NOW your responsibility for the semester)
Access to lab (key in SEA office) - combo to lockbox
Bear Card access to WSC - sign in sheet will be ready next week
FTP Site - Data sets and software will be available here throughout the semester

Lecture Recap

Levels of GIS
Geocaching
Shape files and layers
Attributes
South America cities (and animals)
Pixels
Haiti earthquake

Lab Recap

Amelia Earhart excercise
SAVE YOUR WORK!!!

Photos of Haiti Earthquake

http://picasaweb.google.com/missionofhope/EarthquakeJan122010#5426281001207124210

Tuesday, January 12, 2010

Welcome

GIS Lecture: T/R 9:25-10:40
GIS Lab: T/R 10:50-12:05
WSC #110B

TA: Leslie Ouy
Lab Coordinator: Allan Rene de Cotret