Friday, April 27, 2012

Lab3: Neogeography


As a neogeography project, I decided to make a map of places in the greater San Diego area that intrigues me. I visit San Diego quite often because of friends at UCSD. There is beautiful scenery by the Mission Bay Park as well as magnificent tourist destination, SeaWorld. Watching the sunset from coastlines of Coronado is by far the most amazing place I have ever been to. From the famous Chili Fries from Lolita's to 40oz porterhouse for two at Cowboy Star, San Diego also has my favorite restaurants. There are also other attractions such as the USS Midway museum, an Aircraft Carrier-turned museum that demonstrates the immense scale of the US Military protecting freedom around the world.



View My Visits to San Diego in a larger map


    Neogeography is the geo-spatial side of Web 2.0. User-created content combined with existing maps to give meaning and share spatial information with other users. Neogeography embodies the idea that spatial knowledge contains a personal meaning.
    Although neogeography is widely accepted and appreciated, as with anything, there are some downsides to this idea. One of the major pitfalls of neogeography is misinformation. Since there is no regulating agency (such as USGS) there is a great amount of discrepancy regarding the information presented by neogeography. Unlike GIS, where qualified individuals go to great depths to catch and correct wrong information, neogeographers (many of whom are amateurs like me) may present wrong information regardless of malicious intent. Also, since there are no requirements or set regulations, every user follow their self-made guidelines (if any). This leads to a map that is very difficult to read and interpret. Another major disadvantage of neogeography is the loss of privacy. Due to the fact that many neogeography maps contain personal meaning to the space around us, there is a possibility of great leak of personal information. Since anyone who accesses this blog (made public) can access my map (made public by following the link), they can predict where I will be when I visit San Diego without my knowledge.
    Regardless of these downsides of neogeography, it still stands as a positive symbol of personal understanding of spatial information. I don’t see it too distant in the future when users will start to tag their pictures and videos based on location, which will allow for another type of social-spatial analysis. It also serves a way for people like you and me to get interested in maps as a whole, and moving to a more sophisticated study such as GIS. The flaws mentioned above can be reduced by implementation of a bit of regulations and safety mechanisms.


Friday, April 20, 2012

Lab 2: USGS Topographic Maps



1. What is the name of the quadrangle?
      Beverly Hills, CA

2. What are the names of the adjacent quadrangles?
     Canoga Park, Van Nuys, Burbank, Topanga, Hollywood, Venice, Inglewood

3. When was the quadrangle first created?
    1995

4. What datum was used to create your map?
    National Geodetic Vertical Datum of 1929

5. What is the scale of the map?
    1:24000 Scale

6. At the above scale, answer the following:
            a) 5cm on the map is equivalent to how many meters on the ground?
                 0.05*24000 = 1200 meters

            b)  5in on the map is equivalent to how many miles on the ground?
                 5*24000/63360 = 1.894 miles

            c)  One mile on the ground is equivalent to how many inches on the map?
                 63360/24000 = 2.64 inches

            d)  Three kilometers on the ground is equivalent to how many centimeters on the map?
                 3000/24000*100 = 12.5 cm

7. What is the contour interval on your map?
    20 ft

8. What are the approximate geographic coordinates in BOTH degrees/minutes/seconds and decimal degrees of:
            a)  the Public Affairs Building;
                 34º3'57"N 118º26'11"E
                 34.066º N 118.436º E

            b)  the tip of Santa Monica pier;
                 34º27"N 118º29'56"E
                 34.008º N 118.499º E

            c)  the Upper Franklin Canyon Reservoir;
                 34º6'13"N 118º24'58"E
                 34.104º N 118.416º E

9. What is the approximate elevation in BOTH feet and meters of:
            a)  Greystone Mansion (in Greystone Park);
                 560ft = 170m

            b)  Woodlawn Cemetery;
                 140ft = 42m

            c)  Crestwood Hills Park;
                 620ft = 189m

10. What is the UTM zone of the map?
      UTM Zone 11

11. What are the UTM coordinates for the lower left corner of your map?
       3763000,361400

12. How many square meters are contained within each cell of the UTM gridlines?
       1,000,000 m^2

13. Obtain elevation measurements, from west to east along the UTM northing 3771000, where the eastings of the UTM grid intersect the northing. Create an elevation profile using these measurements in Excel (hint: create a line chart). Figure out how to label the elevation values to the two measurements on campus. Insert your elevation profile as a graphic in your blog.
     

14. What is the magnetic declination of the map?
     14 Degrees

15. In which direction does water flow in the intermittent stream between the 405 freeway and Stone Canyon Reservoir?
      The water flows south from higher elevations at the top of the river to lower elevations at the bottom of the river.

16. Crop out(i.e., cut and paste) UCLA from the map and include it as a graphic on your blog.

Tuesday, April 10, 2012

Lab1: 3 Maps


Here are three maps I find to be of interest to me.
This first map is a map of UCLA. From the dormitories at the top left of the map and classes and labs on the right side, this map contains the places I spend the majority of my time. My daily routine can be projected on top of this map and can make an interesting data to be analyzed.


This is a light map of Korea, and parts of Japan and China. The map contains information about the level of city lights emitted during night time. The contrast between the light emissions of North and South Korea is quite shocking; especially to me personally, because I have spent half of my life in Seoul, somewhere in the bright dot near the center of the map.

The last of maps of  interest is a topological map of Hawaii. Hawaii is the most beautiful place I have witnessed with my eyes. The synergy between highly elevated areas of active volcano with the waves and coral reefs by the sea level was just magical to my young eyes when I last visited ten years ago.