Discussion
DISCUSSION

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Supervised Classification

Walkability

Income vs. Obesity

Utilization of Buffers

Supervised Classification Analysis:

  • This classification was performed entirely by hand due to some classes being very similar to one another.
  • This would have resulted in some areas being classified incorrectly.

Figure 18: Southeast Corner of Vancouver

Figure 19: Supervised Classification

Figure 20:Supervised Classification overlaid with City park boundaries(dark green)

 

As can be seen through Figure 19 and 20, Vancouver City's park boundaries slightly differ the results of the supervised classification. This could be due to the reason that our classification of parks and openspace consisted of several categories while the City might have analyzed it differently.

 

Walkability:

Figure 21: Walkability Vancouver

  • The walkability map is classified according to the different neighborhoods ing the city of Vancouver.
  • Those that are classified as obese (BMI>30) are located mostly in very walkable parts of the city with the exception of those living in the Sunset neighborhood (bottom right cluster).
  • In map indicates that the prevalence of Obesity is not dependent upon how walkble an area is.
  • The regions with the majority of the Obesity cases are walkable, however locations within close poximity to those areas are restaurants, bars and coffe shops.

 

Income vs. Obesity:

Figure 22: Income vs. Obesity - Vancouver (click each cluster to enlarge image)

  • From Figure 21, it is difficult to determine if there is a strong correlation between the presence of Obesity and income level.
  • However, zooming into the images, it is distinguishable that most of the Obesity cases are locaed in regions that have been classified to be in the Lower-middle income range ($40,000-$60,000).

Utilization of Buffers:

Figure 23: Buffers of HH and LL Regions - Vancouver (click to view enlarged image of each group)

  • Results show that High BMI surround by High BMI values were areas without parks within a 100 metre proximity, the nearby parks were mostly school areas and fields, and the area consisted of high building density.
  • Low BMI values surrounded by low BMI areas show that there are public park space with 400 metres and these values were mostly located in residental areas.

 

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