A Package for Analyzing Skew Factor Models R package SFM version 0.2.1 Generates Skew Factor Models data and applies Sparse Online Principal Component (SOPC), Incremental Principal Component (IPC), Projected Principal Component (PPC), Perturbation Principal Component (PPC), Stochastic Approximation Principal Component (SAPC), Sparse Principal Component (SPC) and other PC methods to estimate model parameters. It includes capabilities for calculating mean squared error, relative error, and sparsity of the loading matrix.The philosophy of the package is described in Guo G. (2023) <doi:10.1007/s00180-022-01270-z>. Software Depends: R (>= 3.5.0) Imports: MASS, SOPC, matrixcalc, sn, stats,psych Suggests: testthat (>= 3.0.0), ggplot2 Guangbao Guo <ggb11111111@163.com> Comprehensive R Archive Network (CRAN) Guangbao Guo [aut, cre], Yu Jin [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=SFM/LICENSE) 2025-04-15 application/tgz https://CRAN.R-project.org/package=SFM doi:10.32614/CRAN.package.SFM en-US