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2005 Apr 05
2
Principle Component Analysis in R
Dear R
Should I be concerned if the loadings to a Principle Component Analysis are
as follows:
Loadings:
Comp.1 Comp.2 Comp.3 Comp.4
X100m -0.500 0.558 0.661
X200m -0.508 0.379 0.362 -0.683
X400m -0.505 -0.274 -0.794 -0.197
X800m -0.486 -0.686 0.486 0.239
Comp.1 Comp.2 Comp.3 Comp.4
SS loadings 1.00 1.00 1.00 1.00
Proportion Var 0.25 0.25 0.25 0.25
Cumulative Var 0.25 0.50 0.75 1.00
I just got concerned that no...
2005 Apr 11
0
plotting Principle components vs individual variables.
...I'm trying to plot the first principle component of an analysis vs the first
variable but am having trouble. I have no trouble doing the initial plot
but have difficulty thereafter.
First I want to highlight some points of the following data set
list(running)
[[1]]
X100m X200m X400m X800m X1500m X5K X10K Marathon
Argentina 10.39 20.81 46.84 1.81 3.70 14.04 29.36 137.72
Australia 10.31 20.06 44.84 1.74 3.57 13.28 27.66 128.30
Austria 10.44 20.81 46.82 1.79 3.60 13.26 27.72 135.90
Belgium 10.34 20.68 45.04 1.73 3...
2005 Apr 11
1
plotting Principal components vs individual variables.
...I'm trying to plot the first principle component of an analysis vs the
first
variable but am having trouble. I have no trouble doing the initial
plot
but have difficulty thereafter.
First I want to highlight some points of the following data set
list(running)
[[1]]
X100m X200m X400m X800m X1500m X5K X10K Marathon
Argentina 10.39 20.81 46.84 1.81 3.70 14.04 29.36 137.72
Australia 10.31 20.06 44.84 1.74 3.57 13.28 27.66 128.30
Austria 10.44 20.81 46.82 1.79 3.60 13.26 27.72 135.90
Belgium 10.34 20.68 45.04 1.73 3...