search for: bschwab

Hello all, I am loading a data frame, fitting a model, getting diagnostic plots and they are flagging a couple of observations as problematic. Fair enough, and I want re-fit without them. After I delete an offending row (identified by one of the diagnostic plots), something like data = data[-3,]; then R will no longer print the contents of the data frame; it tells me it is a data frame

Hello all, I had a very strange looking problem that turned out to be due to unexpected (by me at least) format changes to one of my data files. We have a small lab study in which each run is represented by a row in a tab-delimited file; each row identifies a repetition of the experiment and associates it with some subjective measurements and times from our notes that get used to index another

...-- Christian Raschke Department of Economics and ISDS Research Lab (HSRG) Louisiana State University Patrick Taylor Hall, Rm 2128 Baton Rouge, LA 70803 crasch2 at lsu.edu ------------------------------ Message: 59 Date: Wed, 13 Oct 2010 13:13:03 -0400 From: "Schwab,Wilhelm K" <bschwab at anest.ufl.edu> To: "r-help at r-project.org" <r-help at r-project.org> Subject: [R] [OT] (slightly) - OpenOffice Calc and text files Message-ID: <A93938CC72687245835AC0BE10199F7C84D47D04 at HSC-CMS01.ad.ufl.edu> Content-Type: text/plain; charset="us-ascii" He...

A while back I asked about getting a list of points that R considers influential after fitting a linear model, and very quickly got a helpful pointer to influence.measures(). But "it has happened again." The trouble I am having is that points marked on plots are not flagged in the output from influence.measures(), and I can't read them on the plots. I tried some successive

Hello all, I think I probably did something stupid, and R's part was to allow me to do it. My goal was to control the order of factor levels appearing horizontally on a boxplot. Enter search engines and perhaps some creative stupidity on my part, and I came up with the following: v=read.table("factor-order.txt",header=TRUE); levels(v$doseGroup) = c("L", "M",