Hi,
1- How can I assign different colors to different observations in the PCA chart? Assume, I have 10 observations and I want to use black color for the first 5 and read for the next 5 observations.
Currently, I use
res.pca = PCA(mydata[,1:37], scale.unit=TRUE, graph=T)
plot(res.pca,axes=c(1,2))
2- How can I change the plot area size and font sizes? With these commands
dev.new(width=20, height=4)
plot(res.pca,axes=c(1,2))
The final plot is not what I expected. Please see the picture at https://imgur.com/UINTnv7
Regards,
Mahmood