Re: [R] 'rms' package error

2014-04-03 Thread Göran Broström
On 04/03/2014 04:29 AM, Lucy Leigh wrote: Hi everyone, I am attempting to use the R package 'rms' http://biostat.mc.vanderbilt.edu/wiki/Main/Rrms to implement a PH weibull model, using the pphsm() function. However, I get the following error, f.ph <- pphsm(f) Warning message: In pphsm(f) :

Re: [R] 'rms' package error

2014-04-03 Thread Kevin E. Thorpe
On 04/02/2014 10:29 PM, Lucy Leigh wrote: Hi everyone, I am attempting to use the R package 'rms' http://biostat.mc.vanderbilt.edu/wiki/Main/Rrms to implement a PH weibull model, using the pphsm() function. However, I get the following error, f.ph <- pphsm(f) Warning message: In pphsm(f) : at

Re: [R] 'rms' package error

2014-04-02 Thread Pascal Oettli
Hello Lucy, If you carefully read, it is is not an error message, but a warning message. It tells you that for the moment, if I am not mistaken, "pphsm" does not return the correct covariance matrix, for any fitting. Regards, Pascal On Thu, Apr 3, 2014 at 11:29 AM, Lucy Leigh wrote: > Hi everyo