search for: conc2

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2012 Nov 30
1
help on "stacking" matrices up
...E1)) CAFTINF1 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*Tinf))*(exp(-0.088*(TIME1))) CONC1 <-ifelse(TIME1<=Tinf,CDURINF1,CAFTINF1) CDURINF2 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*TIME2)) CAFTINF2 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*Tinf))*(exp(-0.088*(TIME2))) CONC2 <-ifelse(TIME2<=Tinf,CDURINF2,CAFTINF2) CDURINF3 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*TIME3)) CAFTINF3 <-((Dose/Tinf)*(1/(0.088*76.9)))*(1-exp(-0.088*Tinf))*(exp(-0.088*(TIME3))) CONC3 <-ifelse(TIME3<=Tinf,CDURINF3,CAFTINF3) CDURINF4 <-((Dose/Tinf)*(1/(0.088*76.9)))*(...
2013 Apr 15
2
regression with paired left-censored data
...a = cenreg(Cen(conc, cens_ind) ~ Gp_ident))? with all X and Y data stacked and using a group identifier to look at the differences this doesn't take account of the paired data though. I have also tried splitting the data and regessing one on the other rega = cenreg(Cen(conc1, censind1) ~ Cen(conc2,censind2)) which doesn't work. Does anyone know of a command that will work - or perhaps suggest another package that I could use? I have also looked at multiple imputation packages but they all seem to impute data depending on other columns - whereas I would want to impute data between zero...
2011 Jan 11
0
modified FAST Script from package SensoMineR for the R community - Reg
...ut = matrix(NA, I, J) lev = rep(NA, J) for (i in 1:J) { lev[i] = length(levels(don[, i])) } tdc = tab.disjonctif(don) gp = 0 for (i in 1:J) { conc = cbind(c(1:lev[i]), acm$var$coord[(1 + gp):(gp + lev[i]), 1]) o = order(conc[, 2]) conc2 = cbind(conc[o, ], c(1:lev[i])) o2 = order(conc2[, 1]) conc3 = conc2[o2, ] out[, i] = tdc[, (1 + gp):(gp + lev[i])] %*% conc3[, 3] gp = gp + lev[i] } out = data.frame(out) for (i in 1:J) { out[, i] = as.factor(out[, i]) } cate...