search for: probtrans

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2011 Sep 17
0
Warning in 'probtrans'-function ('mstate'-package)
Dear all, in order to estimate transition-specific probabilities in a multi-state model i applied the 'probtrans()' function from the 'mstate'-package. Now, i am at loss with the following message (see attached example): Warning message: In probtrans(msf.0, predt = 0) : Negative diagonal elements of (I+dA); the estimate may not be meaningful. I am not very familiar with matrix algebra nor did i...
2010 Jul 16
1
Inserting and testing revised functions in a package
A new facility has been added to r-devel for experimenting by authors of packages. The idea is to insert modified code from the package source into the running package without re-installing. So one can change, test, change, etc in a quick loop. The mechanism is to evaluate some files of source code, returning an environment object which is a snapshot of the code. From this environment,