Wednesday, September 5, 2007

Pete is not a Narc.

Tonight I had a thought breakthrough involving the word "analysis." I have had trouble explaining what GIS is about to people. I tell them that GIS is about making maps and combining that process with computer databases. Tonight I thought that analysis is the word I need to add to my description of what GIS is about. The power of GIS is making maps that help us analyse complex information.

Our first exercise tonight was about a water contamination scenario. The "map" I made is to the right. I'm using that term loosely because it is pretty far from what most people would call a typical map. The pink and red areas represent contamination of an underground aquifer, with the darker red indicating higher levels of contamination. The blue lines are water wells. The top of the blue lines are the surface of the earth, you can see some are deeper than others, and reach into the contamination area. The sort of beige shapes laying flat on the top of the land surface are different facilities in the area. The brown shapes that extend upward are graphic representations of facilities that are at high risk. The risk is based on if wells for the facility extend into contaminated areas. The darker color shows greater risk for facilities whose wells reaches into an area of higher contamination.

We have an interesting group in class this time. Josh is providing interesting information about Forests and chemical compositions. Some types of food that taste good can penetrate all the way into the nucleus of our cells and mess with out DNA. Yikes! Mary and I continued to eat this good-tasting but dangerous food and shiver in the overly air conditioned classroom. Mary brought us a sweater this week, but insisted on wearing it the whole class period while my fingers became so cold I could barely drape my 2D data layers onto 3D models.

It's true about Pete not being a narc. Apparently some of the Asheville sk8 culture had this impression of him. I can confirm that he is far too busy with GIS work, and blogs, and finding new features on google, to do any policing.

1 comment:

Marynell said...

Edward, how did you upload the Arcscene image to your blog? I wasn't able to export mine and save it as a jpg--please share your expertise.

PS sorry about the sweater-sharing incident