R - PCA prcomp

prcomp - by default center and scale are set to true.

• prcomp docs

start_time <- Sys.time() # Start timer

data_PCA.object <- prcomp(data, center = TRUE, scale. = FALSE)

Sys.time() - start_time # End & display timer

predict(data_PCA.object, newdata)

NOTE: Unlike princomp, variances are computed with the usual divisor (N - 1).

GGBiplot

library(devtools)

install_github(“vqv/ggbiplot”)

ggbiplot(data_PCA.object)

See also: STHDA

Feedback

Was this page helpful?

Yes No

Glad to hear it! Please tell us how we can improve.

Sorry to hear that. Please tell us how we can improve.