This function returns principal components and their associeted eigenvectors - PCA

PCA(df, standardize = TRUE, plot_explained_variance = TRUE)

Arguments

df: A data frame
standardize: - boolean - whether you want to automatically standardize your data
plot_explained_variance: - boolean - whether you want to plot the proportion of explained variance by next vectors

Value

The function returns eigenvectors with their according principal components in PCA. Additionally displays a plot of explained variance in data.

Examples

library(ggplot2)
PCA(mtcars, standardize = TRUE, plot_explained_variance = TRUE)
#> The results are calculated for a standardized version of your data frame!

#> $Eigenvalues
#>  [1] 6.60840025 2.65046789 0.62719727 0.26959744 0.22345110 0.21159612
#>  [7] 0.13526199 0.12290143 0.07704665 0.05203544 0.02204441
#> 
#> $Eigenvectors
#>             [,1]        [,2]        [,3]         [,4]        [,5]        [,6]
#>  [1,]  0.3625305 -0.01612440 -0.22574419  0.022540255 -0.10284468  0.10879743
#>  [2,] -0.3739160 -0.04374371 -0.17531118  0.002591838 -0.05848381 -0.16855369
#>  [3,] -0.3681852  0.04932413 -0.06148414 -0.256607885 -0.39399530  0.33616451
#>  [4,] -0.3300569 -0.24878402  0.14001476  0.067676157 -0.54004744 -0.07143563
#>  [5,]  0.2941514 -0.27469408  0.16118879 -0.854828743 -0.07732727 -0.24449705
#>  [6,] -0.3461033  0.14303825  0.34181851 -0.245899314  0.07502912  0.46493964
#>  [7,]  0.2004563  0.46337482  0.40316904 -0.068076532  0.16466591  0.33048032
#>  [8,]  0.3065113  0.23164699  0.42881517  0.214848616 -0.59953955 -0.19401702
#>  [9,]  0.2349429 -0.42941765 -0.20576657  0.030462908 -0.08978128  0.57081745
#> [10,]  0.2069162 -0.46234863  0.28977993  0.264690521 -0.04832960  0.24356284
#> [11,] -0.2140177 -0.41357106  0.52854459  0.126789179  0.36131875 -0.18352168
#>               [,7]         [,8]         [,9]       [,10]        [,11]
#>  [1,]  0.367723810 -0.754091423  0.235701617  0.13928524  0.124895628
#>  [2,]  0.057277736 -0.230824925  0.054035270 -0.84641949  0.140695441
#>  [3,]  0.214303077  0.001142134  0.198427848  0.04937979 -0.660606481
#>  [4,] -0.001495989 -0.222358441 -0.575830072  0.24782351  0.256492062
#>  [5,]  0.021119857  0.032193501 -0.046901228 -0.10149369  0.039530246
#>  [6,] -0.020668302 -0.008571929  0.359498251  0.09439426  0.567448697
#>  [7,]  0.050010522 -0.231840021 -0.528377185 -0.27067295 -0.181361780
#>  [8,] -0.265780836  0.025935128  0.358582624 -0.15903909 -0.008414634
#>  [9,] -0.587305101 -0.059746952 -0.047403982 -0.17778541 -0.029823537
#> [10,]  0.605097617  0.336150240 -0.001735039 -0.21382515  0.053507085
#> [11,] -0.174603192 -0.395629107  0.170640677  0.07225950 -0.319594676
#>