Lab 5

October 28, 2009

I decided to use 5 classes on my map because I have 67 counties for Florida. I felt to see more of a variation I would need to have more classes. The classification I chose was quartiles and then changed the first break value to 0.  I like how it divided up the numbers. The equal interval, natural break, and defined interval you did not see much of a change in each of the breaks. There was two much of one color. I chose a color scale that only had similar color so you can see the change.

 FL_Pop_Ch_90_00

            For the second map I first made a new field in the attributes table. In this field I calculated 2000 population – 2008 population to get the difference between the two years. I then went to create the map. I chose to classify the numbers the same way I classified the other map using quartiles. I changed the first break value to 0. I chose to have 5 different classes. The symbol size ranged from 4 to 12.  I like how it divided up each of the classes. The other classifications did not show a very big difference between the populations. The color I chose for the state was a light pink. The color I chose for the symbols is a dark green. I felt these two colors together made the map pop out at you.

Total_Pop_Chg

Map Critique 3

October 21, 2009

Map Critique 3
The map I chose to critique is called “Total Population”. The map shows the total population of the world in 2002. Each country is not its normal size. The size of the country is based on their population. The map also shows in a table the some of the most and some of the fewest people. China has the largest population so it is the largest country on the map. The country with the lowest population is Holy See with a population of 1,000. Also, a diagram of the world population by region and an excerpt explaining what is going on in the map. The countries are all in very bright colors. China stands out the most because it is the largest and is in a bright green color.
I like the map; it is a different way to look at the world population on a map. The audience of this map is anyone. Most maps just have the population color coded and are kind of boring to look at. Even though those maps are boring to look at they give you actual numbers/data; this map does not. When a person looks at this map they can only tell by the size of the country and compare it to other countries that it has a larger or smaller population. This would not be a very good map to use for exact calculations of population. The flaw of the map is it does not show a very accurate account of every country’s population. This map would be good to show people how much of impact some of the countries have on the Earth. The map does not follow good principles of cartography. It does not have orientation, legend, or a scale. Good principles of cartography that the map does have are: the source of information, the date the map was created, a title, and a neatline. I think the map communicated what it is about pretty well because it tells the audience what the map is about in the title.
Bibliography
Total Population. Map. 2006. Oct. 2009 < http://www.worldmapper.org/display.php?selected=2&gt;.

Map3

Lab4 Blog

October 20, 2009

For this part of the lab I chose to use this projection.

NAD_1983_Florida_GDL_Albers

Projection: Albers

False_Easting: 400000.000000

False_Northing: 0.000000

Central_Meridian: -84.000000

Standard_Parallel_1: 24.000000

Standard_Parallel_2: 31.500000

Latitude_Of_Origin: 24.000000

Linear Unit: Meter

GCS_North_American_1983

Datum: D_North_American_1983.

The Florida central meridian is -81

This projection is good because it is especially for Florida.

This lab was somewhat difficult for me. I had a hard time inputting the data into ArcMap. My files had spaces in them. I had to go back and change all of my file names so they would not have any spaces in them. Other than that I had no other problems with this lab.

ArcGIS terms:

  • DBF/Dbase files
    • A database program whose file format has been adopted for the shapefile data model and tables in ArcGIS
  • Select by Attributes
    • To choose a subset of features or table objects based on the values in one or more attribute fields
  • Query
    • An operation to extract records from a database according to a specified set of criteria
  • Fields (in a table)
    • A single column of information in a data table
  • Records (in a table)
    • A row in a table containing one object
  • Attributes
    • Information about map features stored in columns of a table
  • Relational Database
    • A database that stores information in tables and constructs temporary relationships between them
  • Join function
    • The temporary combination of data from two tables based on a common attribute field or location
  • Monitor Fire
    • I am not sure about the answer. It is when the computer monitor catches on fire.
  • Calculate/Field Calculator
    • This helps you do calculation using different fields. We used this in the lab to figure out percent change between different years.

I found most of my answers out of my GIS book. “Mastering ArcGIS” by: Maribeth Price

Map Critique 2

October 2, 2009

Map Critique 2

The map I chose is called “The World: As America Sees It”. It is a rather funny map. The map divides the world into different regions based on what Americans think of these countries/continents. For instance South America is called cocaine and coffee; Russia is called Russian Mob. Each continent/country is also a different color. The United States is the American flag while Japan is colored yellow and is called “Radioactive Area”. The first thing I see when I look at this map is Africa. Africa is right in the middle of the map; it is very large and has big white and black vertical strips on it. They called Africa “Empty Area”.

I think this map is an interesting way to look at the world. I do not know if it is completely true, but it is very funny to think about the world that way. The audiences for this map are Americans; other countries might take offense to this map. I do not think this would be a real map to use on a daily basis; it is just something fun to look at. It would be more of a piece of art than used for science. This map does not show true political boundaries of the world. It does not follow good principle of cartography. This is map only has a title; it does not show who created the map, the date the map was created,  the legend, the north arrow, and the scale. I think this map communicates the American view of how to look at the world and not any other countries in the world.

Bibliography

The World: As America Sees It. Map. 30 Sept. 2009 <http://www.gishumor.com/uploaded_images/WorldAsAmericaSeesIt-734390.jpg>.