[R] Plot Principal component analysis

[SNN]

Thanks for your help,
 Can R plot the data in 3 dimention, with different colors for each group ? 
for exmple I would like to have the plot with respect to PC1, PC2 and PC3.

Thanks,


SNN wrote:
> 
> Hi,
> 
> I have matrix of 300,000*115 (snps*individual). I ran the PCA on the
> covariance matrix which has a dimention oof 115*115. I have the first 100
> individuals from group A and the rest of 15 individuals from group B. I
> need to plot the data in two and 3 dimentions with respect to PC1 and PC2
> and (in 3D with respect to PC1, PC2 and PC3). I do not know how to have
> the plot ploting the first 100 points corresponding to group A in red (for
> example) and the rest of the 15 points in Blue? i.e I want the each group
> in a diffrent color in the same plot. I appreciate if someone can help.
> 
> Thanks,
> 

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