search for: merror

I have been try to work with Merror n I keep getting this message: Error in solve.default(H) : system is computationally singular: reciprocal condition number = 0 can some one please tell me what it mean and how to solve this. -- View this message in context: http://r.789695.n4.nabble.com/Merror-tp4632371.html Sent from the R h...

...ce model parameters > EA <- 0.002938 > EB <- -0.2 > EQ <- 0.066 > a <- 0.8 > > #Specifying sex-specific parameters > > GSI<- NULL > > if (Sex==1) GSI<-0.05 else + if (Sex==2) GSI<-0.17 > > # Define margin of error functions > #merror <- function(phat,M,alpha) # (1-alpha)*100% merror for a proportion > # { > # z <- qnorm(1-alpha/2) > # merror <- z * sqrt(phat*(1-phat)/M) # M is (Monte Carlo) sample size > # merror > # } > > #Bring in temp file > > temper <- scan(&qu...

Dear R people Could you please help with following Trying to compare accuracy of tumor size evaluation by different methods. So data looks like id true metod1 method2 ... 1 2 2 2.5 2 1.5 2 2 3 2 2 2 etc. Could you please give a hint how to deal with that. Seems like {merror} does not suite to me because I am trying to compare accuracy of measurements with their true known values not just overall agreement of methods. Moreover sample size is ridiculously small (33 patients) so ANOVA is not much of help (or is it?) Any suggestions, hints and even guesses are highly appr...

....222 FG <- 0.631 UA<- 0.0253 UB<- 0.58 UG<- -0.299 #Mass balance model parameters EA <- 0.002938 EB <- -0.2 EQ <- 0.066 a <- 0.8 #Specifying sex-specific parameters GSI<- NULL if (Sex==1) GSI<-0.05 else if (Sex==2) GSI<-0.17 # Define margin of error functions #merror <- function(phat,M,alpha) # (1-alpha)*100% merror for a proportion # { # z <- qnorm(1-alpha/2) # merror <- z * sqrt(phat*(1-phat)/M) # M is (Monte Carlo) sample size # merror # } #Bring in temp file temper <- scan("temp.dat", na.strings = ".", list(...

Hello, I want to know if there are some functions or packages to solve differential and integral equation using R. Thanks. Shao chunxuan. [[alternative HTML version deleted]]

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