Re: [R] Mann-Whitney by group

2012-07-16 Thread Oxenstierna
lapply(thing, function(x) x[['p.value']]) --works very well, thank you. Not to be a chore, but I'm interested in comparing the results of wilcox.test--and the methodology we've employed so far--with the results and methodology of wilcox_test (library("coin")). So, I'd like to compare groups 5 and

Re: [R] Mann-Whitney by group

2012-07-10 Thread Oxenstierna
This works very well--thanks so much. By way of extension: how would one extract elements from the result object? For example: thing<=apply(Dtb[,3:10], 2, function(x) wilcox.test(x~Dtb$Group)) summary(thing)$p.value Does not provide a list of p-values as it would in a regression object. Idea

Re: [R] Mann-Whitney by group

2012-07-06 Thread Oxenstierna
Hi David, Thank you for the insight: I could have sworn I added a picture of the data, but providing the actual data is worlds easier to deal with, I'm sure. I've never used dput(), so I entered it using the dataframe in question as the object, and I've pasted the results below. Essentially, I

Re: [R] Help! Please recommend good books/resources on visualizing data and understanding multivariate relations...

2012-07-05 Thread Oxenstierna
I'm a fan of Ggobi--which works well with or without R--but I'm not sure how it handles enormous data sets. I second the Tufte recommendation, and add: Interactive and Dynamic Graphics for Data Analysis. -- View this message in context: http://r.789695.n4.nabble.com/Help-Please-recommend-good-b