search for: methodb

...anyone know of a good way to conditionally evaluate R code chunks when Sweaveing? What I'd kind of like to be able to do is set a number of variables in a list and if variable.a=TRUE then process code chunk labelled "methodA", if variable.b=TRUE then process code chunk labelled "methodB" etc <<label=setvars>>= variable.a <- TRUE variable.b <- FALSE ##etc @ if (varible.a == TRUE) { <<label=methodA>>= R code for method A goes in here more R code @ } if (varible.b == TRUE) { <<label=methodb>>= R code for method B goes in here more R c...

Hi I need to compare the performance of two sludge inertization methods. For that i want make a manova Wilks test. Description of the experiment: After the calcination at different temperatures my calcinated sludge are submeted to the lixiviation test. In my tables i show the concentration of the some elements in the extract phase. The results: Method A (calcination at 1100 C) Chromium

...- b == 0 -0.6570 0.1325 -4.960 <0.001 *** #idea3 #ref=a dat$method <- relevel(dat$method, ref="a") lm_ref_a<-lm(y~method + x1 + x2) summary(lm_ref_a) Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.92202 0.64418 1.431 0.1647 methodb 0.32389 0.14025 2.309 0.0295 * methodc -0.33316 0.19372 -1.720 0.0978 . x1 0.57935 0.09356 6.192 1.78e-06 *** x2 0.13596 0.11563 1.176 0.2507 #ref=b dat$method <- relevel(dat$method, ref="b") lm_ref_b<-lm(y~method + x1 + x...