The best replacement for pca is pcusa.

The best alternatives to pca are rated as following:
★★★★★  pcusa
★★★★  cna
★★★  ica
★★  lda
★★  factor analysis
★  svd
★  hha
★  epidural
★  opc
★  pct
★  efa
★  cca
★  epc
★  mds
★  fa
  pcb
  pcoa
  paf
  cca battery
  pls
  nmds
  usa presbyterian
  pcea
  arp
  factor
  eof
  tca
  pcs

Your alternative for pca is not listed? Suggest!
Speaking about pca, one probably shouldn't forget about mean centering.

Other search terms related to pca and their ratings are:
★★★★★ mean centering
★★★★ basal rate
★★★ pcs
You have in mind a companion for pca and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pca in all years. Click on graph for more.
pca
pcusa
cna