[Rd] PS to prior note

[Terry Therneau]

Sorry to forget this
> sessionInfo()
R version 2.14.0 (2011-10-31)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=C              
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=C                 LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods
base     

---
 
 Further note.  I started out by just having a new setMethod, and let R
do all the behind the scenes bookkeeping as it usually does.  But then
backsolve(cmat, x) fails, where cmat is an ordinary cholesky.  It
doesn't find the default value for ncol.

Terry T.