00:01This is Lesson 6: Conduct the analysis...
00:04...Exercise 6e: Evaluate the results.
00:07In this exercise we have two objectives.
00:09First, we want to compare your guesses from Lesson 1.
00:12Second, we will examine the five candidate sites.
00:15This exercise begins where Exercise 6d ended.
00:18First, click the Show Next View button twice and zoom to the Lesson1Predictions.tif layer.
00:23The exported map is a raster dataset.
00:26Its GeoTIFF tags contain the coordinate system information ArcMap needs to align it...
00:30...with the other layers in the map.
00:31How did your guesses turn out? You can zoom and pan as needed to get a better look.
00:35When you’re finished, turn off the Lesson1Predictions.tif layer.
00:39This completes the first objective.
00:41Next, we will examine the candidates by taking a virtual tour of the five sites.
00:45Open the RecommendedSites attribute table, move and adjust the table as needed...
00:50...then zoom to Site 1...
00:57...and use the Pan, Zoom Out, or Zoom In tools to view each of the sites.
01:02Use different scale settings to get a good overall perspective...
01:05...of the surrounding area for each site.
01:07Site 1 has good demographics but is far from the river.
01:13The site is hilly with limited road access.
01:17Next, examine Site 2 in the same way as you did for Site 1.
01:21Site 2 has comparatively weak demographics.
01:24It’s about a half mile from the river, placing it in the middle of the candidates.
01:30The site is now being used informally as a soccer field.
01:38Zoom to Site 3. Notice that Site 3 is adjacent to the river.
01:43It has the lowest median household income...
01:45...and the second highest percentage of children.
01:48The site is also right next to a freeway.
02:03Next, zoom to Site 4. This site has relatively poor demographics.
02:08Just like Site 2, it’s about half a mile from the river.
02:11It has a developed residential parcel jutting into it.
02:15You will see that this site is apparently used for storage...
02:18...and is next to a high-voltage power line.
02:25Zoom to Site 5. Site 5 has mixed demographics.
02:29It is the farthest site from the river, actually crossing the three-quarter mile buffer...
02:33...the purple line.
02:36This site is easily accessed from the surrounding streets.
02:43Close the attribute table and zoom to the LARiverBuffer layer.
02:47Save the map and exit ArcMap.
02:49We have now completed the second objective...
02:51...which was to examine our recommended sites.
02:53This wraps up our analytical work.
02:55This concludes Exercise 6e, Evaluate the results, of Lesson 6, Conduct the analysis.
03:00In Lesson 7 we will learn how to automate the analysis by creating a model in ModelBuilder.
Exercise 6e: Evaluate the results
Understanding GIS: An ArcGIS Project Workbook for ArcGIS 10
Lesson 6: Conduct the analysis
Compare the selected parcels to photographs taken in the field.
Book Resources are located here.
- Recorded: Oct 10th, 2011
- Runtime: 03:10
- Views: 4316
- Published: Nov 30th, 2011
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