Geoscience Reference
In-Depth Information
0 1.5 3
6
9
12
Miles
FIGURE 3.4
k
-Means applied to 26 principal components of the 41 OAC variables. (From Office for
National Statistics, 2011 Census: Digitised Boundary Data (England and Wales) [computer file]. UK
Data Service Census Support. Downloaded from: http://edina.ac.uk/census; 2011 Census: Output Area
Classification (England and Wales). Census output is Crown copyright and is reproduced with the permission
of the Controller of HMSO and the Queen's Printer for Scotland.)
40
35
k
-means
Parallel
k
-means
30
25
20
15
10
5
0
234
567891011121314151617
No. of clusters
18 19 20 21 22 23 24 25 26 27 28 29 30
FIGURE 3.5
Output area (OA)-level results for the two clustering algorithms.
