Hello everyone, I'm not familiar with using dates (date object) in splus. I have in my dataset a column each for day, month, year, 6 in all, representing start and end dates. I would like to generate
Hello everyone, I've ran a simple linear model with no intercept. I would like to specify a test, something like 'x = 1 (instead of 0, the default)'. How to acheive this in Splus? I was able to do th
Many Thanks to Douglas Bates and Spencer Graves for their suggestions. Regards, Savi __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotio
Dear Splus users, I've ran an nlme model and used coef(model, augFrame=T) to extract the subject-specific parameter estimates. My question is: how to obtain the standard errors of the parameter estim
Hello S+ users, Also, i was viewing the help file for 'multicomp' to perform some post-hoc comparisons for a nlme analysis and came across "differences of the adjusted means". I would like to know wh
Hello S+ users, I was viewing the help file for 'multicomp' to perform some post-hoc comparisons for a nlme analysis and came across "differences of the adjusted means". I would like to know what kin
Dear viewers, In Splus, is there a function which does the following: function(expr) if 'expr' is a numeric value less than 0, a value of 0 is returned. if 'expr' is a numeric value greater than or e
Thanks Roger, Max, and Richard for your immediate Savi __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo
Hello viewers, I need some help in modeling the data which behaves like this (please see the attached plot of the data). I was asked to fit a mixture model which involves two nonlinear asymptotic fun
Dear viewers, I'm running a NLME model and i'm getting the following error. " Problem in nlme.formula(AVG.WT ~ Asym - (Asym - R0) * ..: Step halving factor reduced below minimum in PNLS step " How ca
Hello <List Viewer(s)>, What is a "sandwich estimator"? When and where is it used? Any help on this topic is appreciated. Thanks in advance, Savi __________________________________ Do you Yahoo!? New
I'd like to THNAK the following people [ Jim Pratt, Simon Rosenfeld, Eric Zivot, Andy Liam, Sundar Dorai-Raj ] for their input and suggestions. GOOGLE helped, along with the following responses. The
Hello everyone, I have a dataset with repeated measures data on several subjects which are inter-correlated. Thinking that clustering is the way to handle the correlation I've tried to use the 'clust