[R] why standardize the variables to perform LDA?

2019-02-08 Thread Tony Gozdz
I understand the need to standardize the variables to perform PCA, but is this a recommendation or necessity before running LDA? [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://st

[R] pattern evaluation in electron microscopy images

2019-02-08 Thread PIKAL Petr
Dear all I enclose 3 electron microscope images in which I would like to evaluate plane spacing. Before I start to dig deeper and use trial and error in trying to find some packages/functions for such pattern evaluation in electron microscopy pictures I would like to ask if anybody could point

Re: [R] Randomization Test

2019-02-08 Thread Meyners, Michael
Ogbos, You do not seem to have received a reply over the list yet, which might be due to the fact that this seems rather a stats than an R question. Neither got your attachment (Figure) through - see posting guide. I'm not familiar with epoch analysis, so not sure what exactly you are doing /

Re: [R] Spacing around \cdot (%.%) unequal in pdf

2019-02-08 Thread Martin Maechler
> Pascal A Niklaus > on Wed, 6 Feb 2019 19:48:49 +0100 writes: > I am struggling labeling an axis in a plot. > Here is a minimal example illustrating the point: > pdf("mve.pdf",width=5,height=5) > ypos <- c(1:3) * 1e6 > ylabs <- sapply(ypos/1e6, function(i) as.ex