Tuesday, October 19, 2010

Lab3: Neogeography


View Daily Routine in a larger map


      This Neogeography map is created to show the routes and places which I must travel every day. The red line is the route for me to go to UCLA in the morning, and the blue, grey, purple, green, is my returning route. I took some videos when I was driving to school this week to show the traffic conditions at around 8:00a.m. and 5p.m.. I believe that my route is the best route for those people who live in Santa Monica, and need travel to UCLA in the morning and in the evening. The red zone shows the heaviest traffic area in Westwood, since the red zone is the intersection area of Wilshire Boulevard, Sepulveda Boulevard, and the exits and entrances of I-405 freeway. Also, I added several places where I must go every day, with time indicated in the title of the point, so that my friends can know more about my daily routine and where I am at certain times by looking at this map.

With the well development of several neogeography toolsets, such as Yelp, Map Quest and Google Maps, neogeography becomes very common nowadays. Although Neogeography is commonly used in our daily life, there are some pitfalls that users need to be aware of. First of all, neogeography maps are amateur maps; the reliability is not as good as typical GIS, since web maps relies on external, distributed data sources, and mostly, User Generated Content (UGC). No one will verify the data’s accuracy and if the data are up-to-date or not. Also, neogeography is in open source format. Amateur can edit the map easily and this will result in the decrease in reliability and accuracy. Furthermore, the symbols and quality of web maps are not unify; this will cause users’ frustration. For example, in my personal Google Map, I used a car as a freeway entrance, but other users may misunderstand that symbol represents a taxi station.

On the other hand, Neogeography still has its potential. The major advantages for neogeography are: It is real time processing and extremely user-friendly. When a map user decide to use web map, the only thing that the user needs, is a computer and internet access. They do not have to print maps, or to master the maps. Also, some of the web maps provide offline version, so only an electronic device is needed for using neogeography maps. Secondly, neogeography is flexible and multi-purpose. Users can create their personal maps; and in one web map, it can show different information, such as locations and weather at the same time. Thirdly, it is easy to integrate multimedias in neogeography. For example, users can embed videos and graphics into Google Maps. This will make the map more interactive and more informative.

The major consequence of neogeography may result in the downgrade in GIS, because neogeography is so user-friendly that user do not even requires time to learn how to use it. On the other hand, GIS is professional and requires a lot of time to master the elements. As the characteristics of human being, we usually choose the easier way to achieve our goal, so this may results in the raise of neogeography and the downgrade of GIS.

Tuesday, October 12, 2010

Lab2: USGS Topographic Maps




1.The name of the quadrangle is Beverly Hill Quadrangle.


2.The Name of the adjacent quadrangles are: Canoga Park Quadrangle, Van Nuys Quadrangle, Burbank Quadrangle, Topanga Quadrangle, Hollywood Quadrangle, Vince Quadrangle, Inglewood Quadrangle.


3.The quadrangle was first created in 1966.


4.National Geodetic Vertical Datum of 1929 was used to create the map.


5.The scale of the map is 1:24,000
7.The contour interval is 20ft.

8.a) The Public Affairs Building: N34˚4’28”    W118˚26’21” /  N34.07444 W118.439167
  b)The tip of Santa Monica Pier: N34˚0’28”  W118˚29’59” / N34.007778 W118.49972
  c)The Upper Franklin Canyon Reservoir: N34˚7’13” W118˚24’ 37.5”  / N34.12028 W118.410417


9.a) Greystone Mansion:        580ft /176.784m
  b) Woodlawn Cemetery:        140ft / 42.672m
  c) Crestwood Hills Park:600-700ft // 182.88-213.36m


10. This map is located in the UTM Zone 11.


11. 361370m East 3763000m north


12. 1,000,000 square meters
13.


14. The magnetic declination is 14 degrees


15. From North to South


16.
  

Friday, October 8, 2010

Lab1: SSC & Blog


Map#1: Dynamic Map of NASA World Wind

Source: NASA World Wind.jpg, Wikipedia (http://en.wikipedia.org/wiki/NASA_World_Wind) , accessible at 4:00am Oct, 8, 2010 (GMT-8:00)
Source: Sun_anim.gif, Wikipedia (http://en.wikipedia.org/wiki/NASA_World_Wind) , accessible at 4:00am Oct, 8, 2010 (GMT-8:00)







             This gif format animated map is captured from an open source virtual globe software, NASA World Wind by NASA. This map is showing how shadow changes in a certain area along a day. I find out that this map is quite useful on choosing living space when we need to move to a new habitat; because different people have different requirements for the amount of sunlight in habitats, and sometimes it is difficult to visualize the amount of sunlight of an apartment or room by simply using the cardinal directions (East, West), since there are lots of factors affecting the amount of sunlight, for example, trees, buildings nearby, and so on. Also, this dynamic map is useful for hikers.  They can choose routes with more shadows to decrease the demand of stamina to finish their journey.




Map#2: Thematic World Map of Corruption Perception Index (2009)

Source: map_screen.jpg, Transparency International (http://www.transparency.org/policy_research/surveys_indices/cpi/2009) , accessible at  4:00am Oct, 8, 2010 (GMT-8:00)
               The theme of this thematic map is about the Corruption Perception Index (CPI) of different countries in the world. The boundaries of this map are defined by different countries, and the colors show different CPI; the deeper the color implies the country is more corrupted. I think this map is interesting because corruption has huge effects on politics, economics, religion, Humanitarian Aid, education, and so on. For example, if you want to start a business or to find a place for a retired life, you should choose those countries with a higher CPI (lighter in color).  A better decision can be made by looking at this map.


Map#3:  Left fragment of Piri Reis Map
Source:Piri_reis_world_map_01.jpg, MUSLIM DIALOGUE
 (http://www.muslimdialogue.com/piri-reis-map.html),
accessible at 4:00am Oct, 8, 2010 (GMT-8:00)

Source:Piri_600px-piri_reis_map_interpretation.jpg,
MUSLIM DIALOGUE
 (http://www.muslimdialogu
e.com/piri-reis-map.html
),
accessible at 4:00am Oct, 8, 2010 (GMT-8:00)

















Piri Reis Map is compiled by Piri Reis, an Ottoman-Turkish cartographer. The map above is the left fragment of Piri Reis Map. The left fragment of the map shows the area near Central and South America shores.  I choose this map because I am surprised that without today’s technology, the cartographer in the past could still draw Nautical Chart with a reasonable accuracy. Compiling Nautical Chart is more difficult than the land maps, since, in the past, the ship’s speed mainly depends on speed of the wind, and the speed of wind is always changing. It is so amazing that Piri Reis can compile Atlas with such a reasonable accuracy.