Program in GIS

Figure 1: Final cities based on selection criteria.

Source:  Brenton White ArcMap Project 1 screen capture.

The final cities that meet the selection criteria are Driggs, Geyserville, Nittanytown, and Whitney.
 

Driggs is the Final City for Jen & Barry's Ice Cream Stores
When Including Optional Criteria

Figure 2: Final cities based on optional criteria.

Source:  Brenton White ArcMap Project 1 screen capture.

Adding the criteria that the final cities be within 10 miles of a lake or river and 40 miles of a landmark, three of the four cities meet the river and lake criteria (stars with blue dot), but only Driggs met the landmark criteria (star, blue dot, and cross).  Thus, Driggs is the only city that meets all the criteria specified in the "Optional" step.  A key step was to "select" the rivers and lakes from the hydrology layer and then see which cities were within 10 miles of a river or lake (otherwise, all four cities are within 10 miles of a hydrology "feature.").  See figure 6 below.

Business Criteria

• Greater than 500 farms for milk production (in the county)
• A labor pool of at least 25,000 individuals between the ages of 18 and 64 years (in the county)
• An interstate within 20 miles

Quality of Life Criteria

• A low crime index (less than or equal to 0,02)
• At least one recreation area within 10 miles
• A population of less than 150 individuals per square mile
• A location near a university or college

Optional Criteria

• Within 10 miles of a river or lake
• Within 40 miles of a landmark

Steps along the way

The following figures show some of the steps to determine the cities that meet the selection criteria.

1. Candidate Cities (Within Candidate Counties)

Figure 3: Cities in counties that have >500 farms and target population >=25,000.

Source:  Brenton White ArcMap Project 1 screen capture.

2. Cities with University or College and a Low Crime Rate (From Candidate Cities)

Figure 4: Cities with a college or university and a low crime rate of <0.02.

Source:  Brenton White ArcMap Project 1 screen capture.

3. Cities Within 20 Miles of an Interstate (From Cities with University and Low Crime Rate)

Figure 5: Cities within 20 miles of an interstate.

Source:  Brenton White ArcMap Project 1 screen capture.

Optional:  Select Rivers and Lakes from Hydrology and Pick Cities

Figure 6: Selected cities (cyan dot) within 10 miles of an river or lake.

Source:  Brenton White ArcMap Project 1 screen capture.

The key to determining which cities were within 10 miles of a river or lake, was to select the rivers and lakes from the hydrology layer since not all feature within the hydrology layer were rivers and lakes.  The cyan highlight shows the rivers and lake features and the three cities that fall within 10 miles of a river or lake.
 

GEOG 5222: Project 1: Decision Support with a GIS. Lesson Instructions. April 2004.

Hydrology and Landmark Data.  http://www.e-education.psu.edu/courses/geog5222/zips/exp1files.zip.  Accessed 15 April 2004.