How to remove the observations (sample) in a biplot (PCA)

Question

I would like to know how to remove the observations in my biplot (the black numbers in the background in my graph) and only keep the red arrows (variables).

This is my biplot: biplot(x=pca, choices=1:2)

Did you check this answer https://stackoverflow.com/questions/20194526/labeling-points-in-a-biplot ? — Earl Mascetti, Nov 13 '20 at 09:31

score 1 · Answer 1 · answered Aug 23 '21 at 11:36

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You can use the following for xlabs:

biplot(pca, xlabs=c(rep("", nrow(data))

answered Aug 23 '21 at 11:36

Danil

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I don't think they were trying to remove axis labels—they're trying to remove the observation labels – camille Aug 24 '21 at 15:54

score 1 · Answer 2 · edited Dec 09 '21 at 00:03

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You could change the color of the labels to white:

biplot(pca, col = c("white", "deeppink3"))

edited Dec 09 '21 at 00:03

Martin Gal

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answered Dec 08 '21 at 19:11

José Arenas Rojas

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This deletes the figure frame line too. – user10345633 Sep 05 '22 at 00:22

How to remove the observations (sample) in a biplot (PCA)

2 Answers2