search for: pfct

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2012 Mar 14
1
qmvnorm function
Dear all, I need to use the "qmvnorm" function in mtvnorm package. Here is the error message I got > qmvnorm(0.05, tail="upper", sigma=var)$quantile Error in uniroot(pfct, interval = interval) : f() values at end points not of opposite sign There is no problem for 50th quantile. > qmvnorm(0.5, tail="upper", sigma=var)$quantile [1] -0.5325527 Can anyone give some hint regarding this? Thanks. [[alternative HTML version deleted]]
2011 Apr 29
1
Use nparcomp function from nparcomp library to run post hoc
Dear list, I tried to use the nparcomp to run some post hoc non-parametric comparison and got and error. Error in uniroot(pfct, interval = interval) : f() values at end points not of opposite sign Appreciate any comments. the command line: >nparcomp(Ulceration~Group,data=test,type='Dunnett',control='Non-treated') Jun =================================================================== data as foll...