search for: glt

...im' to minimize the LogLik (by the way, GGt is always positive definite). Except for the first parameters that I give to 'optim', I can't control its tested parameters, which will be used as the inputs of 'fkf' (except, as I sad, for Gt, because I ask 'optim' to give GLt, the lower triangular matrix of Gt, giving as input to 'fkf' GLt %*% t(GLt) ). Since the process stops every time a non positive matrix Ft appears, I would like to know if are there any transformations that could be applied to GGt and P0, given by 'optim', to be sure that Ft will b...

...s applied my data to this helpful tutorial: http://www.biw.kuleuven.be/vakken/statisticsbyr/ANOVAbyRr/UnbalancedTwoWayANOVA.htm I found that my interaction term was insignificant, so my model was reduced to a two-factor model. But then I got stuck on the part where I use a general linear test (GLT) to determine whether I should use a two- or one- factor model to get my correct sum of squares decomposition for my unbalanced ANOVA. I found that there was significance between my two- and one- factor models (p=2.124x10^-6). But now I do not know which model to use for obtaining the correct s...

Hi, I need to draw a line segment between two points on different plots in the same multigraph.I've tried looking at the zoominplot function in plotrix but havent understood much.any help is appreciated ~Aks [[alternative HTML version deleted]]