Analysis of the route

The first route identified by the analysis was along the Broadway corridor. After running the model a second time, (and modifying the process to ensure the next line would not run directly adjacent to the existing line) another line along marine drive was established. The two lines together produce our final results.

(Suitabilty map)
This is the final suitability map based on all criteria.

(final stops)

this map displays the final route along with the most suitable stops.

Suitability Maps.

The final Suitability map is a map of the lower mainland with values ranging from 0 to 526. The lower the value on the range the more suitable the pixel is for a subway line. The pixel size of the final map is at a 20 meter resolution. There is a faint visibility of geology and the buffered schools are very visible. Furthermore, major roads are very visible as they were weighted very high*. All criteria that were weighted highly* are easily visible on the map.
*Although the value was weighted highly, the actual weighting of the criteria lowered the value.

Additional Analysis.

Cost:
Using the length equations we determined that the length of the subway loop to be approximately 25.3 kilometers. With the Cambie line under construction and with an estimated cost of 2 billion dollars we estimate that the cost of our line will be approximately 2.6 billion dollars with a cost per kilometer of approximately 103 million dollars.

Zonal Statistics.

With the aid of Zonal Statistics under spatial analyst tools we compared our subway line to the existing subway lines using our final raster image for subway suitability. Our Marine and Cambie line average a value of 138.05 on a scale ranging from 0 to 526 with 0 being the most suitable. The existing Expo line averaged a value of 225.148 with our suitability map. There is a considerable different between our line and the EXPO line using our Multi-Criteria map with Zonal Statistics.

Error

There were several errors associated with the creation of the final maps.

(error DEM map figure1)
1. As seen in Figure 1, the DEM map of the lower mainland has a significant amount of error at the border between UBC and the rest of the lower mainland. This error affected the slope of the area which affected the one of our criteria. The error affected the final map as the line, to avoid steep slopes, cut directly through the affected (error) slope area.

low res - figure 2 ----- Slope error Hi res -figure 3
2. Another error / problem with analysis was geo-referencing a poor quality (low resolution) geology map. As seen in Figure 2, the first map we used to geo-reference geology had a low resolution. The geo-referenced map, because of the low resolution, also became low resolution. To fix the error we found a higher resolution map, as seen in figure 3, and geo-referenced it again.

Geology -figure 4----- Landuse -figure 5
3. An error with Resolution occurred again when adding our raster images together. The borderline between land / water is different between many of our maps because of there resolution. Figure 4, shows a map with low resolution. Figure 5, shows a map with High Resolution. When adding both maps the boundary between water and land becomes fuzzy.

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References

Credits for songs in intro video
• Gypysy kings -Hotel California
• Metallica -Sad But True

  images for video
  

• google images