SO503 Honors Modern Methods
Lab 3: GIS Does Lab 1
See how a specialized GUI program can do the same things we did earlier.
Understand the difference between raster and vector data.
We will use the MICRODEM program, which you can download in your room from http://www.usna.edu/Users/oceano/pguth/website/microdem/microdemdown.htm . If you download there, or use the version in your room, you must:
Update the program to insure you are running at least version 2017.1.24 (Menu choice File, Tools, Close program and update 64 bit version).
Update the help file (Menu Help, Update help
file). You can also get help at
Open MICRODEM, and open its help file. In the contents, under Tutorials and Labs, GPS, you want Manipulate GPS tracks or get it online. While you can print this, the paper copy will not give you the benefit of all the hyperlinks. This has the step by step directions.
Download data. Make sure you pay attention to where you save the downloads.
SRTM topography (Normandy DEM) Download http://www.usna.edu/Users/oceano/pguth/downloads/normandy.dem.
Landsat-8 satellite imagery. Download http://www.usna.edu/Users/oceano/pguth/downloads/normandy_etm.zip and unzip. This is about 1 GB zipped, and close to 2 GB unzipped into multiple files; do this only with an ethernet connection.
OpenStreetMap Roads (Normandy roads) Download http://www.usna.edu/Users/oceano/pguth/downloads/normandy_roads.zip and unzip. This will give you multiple files (ESRI Shapefile) which you must keep together.
GPS tracks: These are the same files we used in Excel and Matlab. These files were actually created in the GIS program, which added the Mercator coordinates and the stretching factor which enabled you to calculate the speed and heading.
Deliverables in the Blackboard dropbox:
Create a half dozen graphics that allow you to describe what the subject did during the time interval recorded by the eastern of the the two GPS files.
Write that discussion in a clear, direct fashion, referring to the figures by number.
Include at least three different base maps: the DEM, the Landsat in true color, and the Landsat in false color.
Include the OSM roads on at least one base map.
Include a scale bar on each base map.
Include an export of the data to Google Earth, and comment on how close the GPS gets to the roads.
Discuss what you see as any advantages/disadvantages in using the GIS compared to Excel or Matlab, and what you see as the role of GIS for the earth sciences and the military.