Hello, I'm interested in running a PCA on a data set with lots of missing data. There're a few techniques online which suggest how I could go about doing this, but before I committed to coding them into R, I wanted to see whether anyone could recommend a currently existing package with such a procedure. Google searching for such a procedure has'nt turned much up...but I blame that on the difficulty of searcching for single letters, and the rampant use of R as a variable name. But I did attempt to do my homework before posting to the list! Cordially, -- Adam D. I. Kramer Ph.D. Student, Social Psychology University of Oregon adik at uoregon.edu