search for: ashelton

...ion, or squared partial correlation coefficients) measures the marginal contribution of one explanatory variable when all others are already included in multiple linear regression model. The following link has very clear explanations on partial and semi-partial correlation: http://www.psy.jhu.edu/~ashelton/courses/stats315/week2.pdf In SAS, the options is PCORR2 and SCORR2. For example(from http://www.ats.ucla.edu/stat/sas/examples/alsm/alsmsasch7.htm) data ch7tab01; input X1 X2 X3 Y; label x1 = 'Triceps' x2 = 'Thigh cir.' x3 = 'Midarm cir.' y = '...

We are trying to install R2.2.1 on a IBM P655 Cluster, SuSE LE 9.1 We are using gcc v 3.3.3 and we are getting this error on make g77 -fPIC -g -O2 -ffloat-store -c dlamc.f -o dlamc.lo g77 -fPIC -g -O2 -c dlapack0.f -o dlapack0.lo g77 -fPIC -g -O2 -c dlapack1.f -o dlapack1.lo g77 -fPIC -g -O2 -c dlapack2.f -o dlapack2.lo g77 -fPIC -g -O2 -c dlapack3.f -o dlapack3.lo g77 -fPIC -g

I have installed Parallel R on a LINUX Cluster and I am trying to initiate the Parallel engine function in pR but I am receiving this error Error in namespaceExport(ns, exports) : undefined exports: fixPre1.8 > StartPE(2) chr [1:2] "/usr/local/lib/R/library/base/exec/pRBatch.R" "NULL" Failed to create scheduler thread. Failed to create threads. Error in StartPE(2) :

We are trying to read a sas export file into R. (Works fine on Mac by ftping the export file from solaris box and then importing to R with read.xport, this gives rational numbers etc.) Trying to do this on an IBM Power p655 running linux, reading the same sas export file as used on MAC, in this case the results are not rational. Many of the numbers are interpreted as INF etc. Is it possible