
570 Statistics and Data Analysis for Microarrays Using R and Bioconductor
6 6
FIGURE 18. 4: T he distance confers essential properties to the spac e and
objects therein. For instance, a circle is the locus of all p oints situated at a
constant distance from a fixed point called the center. The right panel shows
a circle of ra dius 6 in a Euclidean metric space. The left panel shows the same
circle of radius 6 in a Manhattan metric space.
we can say that the city-block distance slightly emphasizes the outlier s of a
data set: an outlier will appear a bit farther away when using the Manhattan
distance.
18.2.3 Chebychev distance ...