CODEWITHSUNDEEP
rggplot2plotpca
edhu
edhu

Reputation: 451

How to display two PCA graph together?

I've relatively new to R and I'm not quite sure how to achieve this. Right now I performed PCA on two different data sets using prcomp.

data1.pr <- prcomp(data1, center=TRUE, scale=TRUE)
data2.pr <- prcomp(data2, center=TRUE, scale=TRUE)

I used autoplot(data1.pr, frame = TRUE) and autoplot(data2.pr, frame = TRUE) to draw the graph and it shows the results for both data1 and data2:

enter image description hereenter image description here

Now, how do I combine these two pictures together into one plot with different groups? I searched from some answers and it seem geom is one such solution. However, I'm not quite sure how to achieve that with grouping. Any help would be appreciated!

Upvotes: 0

Views: 1581

Answers (1)

Gray
Gray

Reputation: 1388

Use the following library to control the size(s) of your plots.

library(repr) 
options(repr.plot.width = 5, repr.plot.height = 4)  # To set plot size

Then use the following code to output your plots side by side - resulting in one plot. . You will need to adjust the height and width (above) to get your desired results.

par(mfrow = c(1, 2)  )       # To combine two plots

plot(data1)
plot(data2)

Upvotes: 0

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