Thursday, May 17, 2012

Elizabeth Jimenez Lab 5 Section 1D

     This weeks lab assignment was to create six different maps. I found this assignment to be particularly hard because the instructions were not clear like they were for the last assignment and I had trouble finding the cities it asked me for. The distances between the cities I found however I could not figure out how to subset the layers.

      I attempted this assignment several times before I was able to create the maps although I feel as it is not exactly what the assigment was asking me for . This was because I could not figure out how to make a new layer with the cities that were asked for .

     Working with ArcMap is always a challenge because the work can get lost which has happened to me several times and sometimes it does not do exactly what I asked. For example it took me a while to figure out how to use the measuring toll for this program because I felt like most of the time it did what it wanted instead of what I wanted to find out. Instead I tried making the maps with original map that was given.

    Once I learned how to properly use the measuring tools the measurements I saw were different for Geodesic, Loxodrome and Great Elliptic. For Geodesic the distance between Afghanistan and Washington DC was about 28.270.18 Miles. The Loxodrome distance was about 18, 867.94 miles and the distance using Great Elliptic was about 20,347.65 Miles.These measurements showed different summed distances for each of the maps.
    

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