Lab 7: Cartography and Geovisualization

The map on the top left shows the population in the United States in 2000. The population of the US is based on the census taken in 2000. The color choice of this map is chosen using the shades of purple. The darker color of purple represents the more populated area, whereas the lighter color of purple represents the less populated area. These color assignments are appropriate because we see that the more populated area should have a darker color because it's more crowded whereas the less populated area should have a lighter color to represent the less crowded area.

The map on the top right shows the population change in the United States in 2000. The value of this map is calculated based on the number of people moving in and out of a particular area. There are two shades of colors chosen in this map, green and pink. Green represents the positive growth in population. Area with more growth is represented by a darker color of green. Area with less growth is represented by a lighter color of green. Also, since population change can decrease, the negative change in population is represented in color pink. The greater the population deceased, the darker the shade of pink.

The map on the bottom left represent the percent change in the United States in 2000. Like population change, there are two shades of colors, purple and yellow. Purple represents the increase in percent change in the population. The greater the percent change, the darker the shade of purple. The lesser the percent change, the lighter the shade of purple. The shade of yellow represents the negative percent change in the population. The more negative the change in population, the darker the shade of yellow.

The map on the bottom right represents the population density in 2000. The color choice of this map is chosen using the shades of green. The darker color of green represents the area that is denser, whereas the lighter color of green represents the area with less dense. Population density is calculated based on the number of people concentrated within specific area. The denser the population, the denser the color should be, which shows in this map.