Customizing plot

No need to post twice.? You probably didn't get an answer the first time
because it was just an hour ago, and you didn't include "mydata" (or a 
suitable subset) in your posting.? For the best chance at getting a 
helpful answer, post code that others can run.

I received a bounce reply with [[alternative HTML version deleted]] and thought it has been rejected...


So, here are the commands I use

library(FactoMineR)
mydata <- read.csv('test.csv', header=T,row.names=1)
head(mydata)

???? V1? V2?? V3? V4
P1 73.6 0.7 74.6 3.1
P2 75.2 0.7 75.8 2.8
P3? 6.5 0.0? 7.3 2.5
P4 41.4 0.3 39.2 8.9
P5? 5.4 0.1 18.2 1.1
P6 18.8 0.3 30.3 7.3

res.pca = PCA(mydata[,1:4], scale.unit=TRUE, graph=F)
plot(res.pca,axes=c(1,2))
dev.new(width=20, height=4)
plot(res.pca,axes=c(1,2))

The test data and two plots are available at https://gofile.io/d/Qza0PR
As you can see the second plot is not properly sketched as I want to get a full size chart in the window.

For the colors, I want to use black for the first 3 and red for the next three observations. 


Regards,
Mahmood

    
From: Duncan Murdoch <murdoch.duncan at gmail.com>
Sent: Friday, February 5, 2021 5:01:44 PM
To: Mahmood Naderan-Tahan; r-help at r-project.org
Subject: Re: [R] Customizing plot
?

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

No need to post twice.? You probably didn't get an answer the first time 
because it was just an hour ago, and you didn't include "mydata" (or a 
suitable subset) in your posting.? For the best chance at getting a 
helpful answer, post code that others can run.

Duncan Murdoch