similar to: Comparing slopes in two linear models

I would suggest the method of Sokal and Rholf (1995) S. 498, using the F test. Below I repeat the analysis by Spencer Graves: Spencer: > df1 <- data.frame(x=1:3, y=1:3+rnorm(3)) > df2 <- data.frame(x=1:3, y=1:3+rnorm(3)) > fit1 <- lm(y~x, df1) > s1 <- summary(fit1)$coefficients > fit2 <- lm(y~x, df2) > s2 <- summary(fit2)$coefficients > db <-

Hello Giovanni I made a minor modification to your function, which now allows to compute the within R-sq in Twoways Within models (see below). However I ran into an issue that I have already encountered before: whenever I try to fit Twoways Within models on my unbalanced data, the process is strangely slow and I usually terminate it either after ~15min or when my CPU hits 100C. This is similar to

Hello! I am not experienced enough to know whether I have found a bug or whether I am just ignorant. I have been trying to use the tm package to read in material from RSS 2.0 feeds, which has required grappling with writing a reader for that flavour of XML. I get an error - "Error : 1: EntityRef: expecting ';' - which I think I've tracked down. The feed being processed is from

H All I am in a kind of fix , i got a website ( beta.somesite.com ) .. that need to be password protected , however there are two URLs that should be allowed to all with out password access. Ona cent os box 5.5 i am running apache . the entire site needs passwd protection except for the Below Urls . http://beta.somesite.com/wp-content/uploads/2011/03/large_1990782-e1299229617964.jpg

Dear R users,I'm a new user of R. I'm trying to do a LM test an there is this type of error: Error in t(mX) %*% mX : requires numeric/complex matrix/vector arguments. To be clear I write down the code in which mY ( 126,1 ) mX (126,1) mZ(126,1) are matrix. LMTEST <- function(mY, mX, mZ)#mY, mX, mZ must be matrices!#returns the LM test statistic and the degree of freedom{iT =

Hi all, I''m happy to announce that I''ve completed the first version of my Ajax.RssReader object. It needs some extra''s, but the basic functionality is now available. You can download it from http://www.sayoutloud.com/javascripts/rssreader.js Usage: function myCallbackFunction( rss ) { alert(rss.channel.title); for(n=0; n<rss.items.length; n++) {

the directory I setup in the smb.conf file on the LINUX machine named DP-WS67/CDs I want to give all members of the DP group ownership of the directory. When I enter chgrp 'HY-VEE\AUDIT' /RH1dat/CDs it works. When I enter chgrp 'Hy-VEE\DP' /RH1dat/CDs I get = chgrp: invalid group=20 name 'HY-VEE\\DP' =20 I ran these 2 commands with strace

Happy new year! Hieraki 2.0.0 is released. You can download Hieraki2 from rubyforge.org as tgz or zip (http://rubyforge.org/projects/hieraki). Hieraki2 has a new wiki engine that ships with more than a dozen new features: * everything-is-a-wiki-page (TM) * all pages are under version control * access control list * stay in full control of the tree structure by cut and pasting

I realize this subject is redundant for this community, but I''m hoping the Rails community can provide me with some additional ammunition to help push a rails project I''m pitching over the proverbial tipping point at my company. The Situation: I''m the lead architect at a large bay area retailer. My team and I are currently suffering through the process of paying