M F 10: Mitchell ch. 6 &7

Chap. 6:

Mapping what’s nearby:

Basic concept, Using GIS you can find out what features are within a certain distance or within a boundary.

Useful to show affects may be had by event or activity.
Defining Analysis. (liquor stores sending out mails to everyone in 500 ft distance, or fire departments determining coverage.) Distance, Time, Money, basic statistical information.

3 Ways of finding whats nearby: Straight Line Distance or cost over a network. Cost over a surface.

3 Ways of finding whats nearby: Straight Line Distance or cost over a network. Cost over a surface.

K: Two layers to select one on the other layers. Idea of a network would be road directions on Google set up on a huge network.

Use feature to feature: finding specific areas between two points on a map.

Distance surfaces, EX: take a river and do a buffer zone at 10/20

Measuring Distance or cost over a network.
Calculating Cost over a Geographical Network.

**read over chapter 7**

Time series? Tracking time like a bird flying around town.

Tacking features like wildfires, magnitudes?, wind speeds. Showing patterns and features. ?

Calculates over two dates, or times? Showing how much has changed.

K: Data that changes over time, like county parcel data, subtract from today, compare that to a map two years ago, see how things have developed or gotten smaller. Look at when the parcel was divided.

 

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