Re: [R] Help with fmodel in statisticalModeling package

2019-09-06 Thread Paul Johnston
: CPS85$bogus <- as.numeric(rnorm(nrow(CPS85)) > 0) -pd > On 6 Sep 2019, at 11:57 , Paul Johnston > wrote: > > Hi > > Anyone able to help me with this. > I'm doing a datacamp course and the effect of adding a "bogus variable" to a > linear model. > I m

[R] Help with fmodel in statisticalModeling package

2019-09-06 Thread Paul Johnston
del((aug_model))) I get Error: variable 'bogus' was fitted with type "logical" but type "character" was supplied Any pointers gratefully accepted Cheer Paul J Paul Johnston Field Support (Slough House) University of Manchester Room B29 Pariser B

Re: [R] word stemming for corpus linguistics

2016-07-26 Thread Paul Johnston
m doesn't seem to allow for concordance analysis ... or perhaps it does and I just haven't figured out how to do it, so am happy to be shown some documentation on that process, and whether that is applied before or after the text is transformed into a DTM because searching on-line hasn't (yet)

Re: [R] word stemming for corpus linguistics

2016-07-26 Thread Paul Johnston
Suggest look at http://www.inside-r.org/packages/cran/tm/docs/stemDocument -Original Message- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Andy Wolfe Sent: 26 July 2016 08:10 To: r-help@r-project.org Subject: [R] word stemming for corpus linguistics Hi list On a

[R] Reading PCorpus created using tm package

2016-07-21 Thread Paul Johnston
session. I've seen this http://stackoverflow.com/questions/28377646/how-to-reconnect-to-the-pcorpus-in-the-r-tm-package So can I create a corpus and just reload the file persistent copy or not? Cheers Paul Paul Johnston Research Infrastructure Room B39 Sackville Street Building  http:

[R] Passing data to t.test in loop

2014-12-02 Thread Paul Johnston
Dear All First post so sorry for any breaches of etiquette. I have a csv containing the results for a series of experiments which record the time taken for various sizes of iterations. run_id,size,time 1,100,1.00 2,200,2.100 3,100,1.100 4,200,2.100 5,200,1.900 6,300,4.00 7,200,2.5 ... I read

[R] Reporting Kaplan-Meier / Cox-Proportional Hazard Standard Error, km.coxph.plot, survfit.object

2012-02-19 Thread Paul Johnston
What is the best way to report the standard error when publishing Kaplan-Meier plots? In my field (Vascular Surgery), practitioners loosely refer to the 10% error cutoff as the point at which to stop drawing the KM curve. I am interpreting this as the *standard error of the cumulative hazard*,

[R] (no subject)

2012-01-25 Thread Paul Johnston
subscribe __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.

[R] Cox proportional hazards confidence intervals

2011-11-20 Thread Paul Johnston
I am calculating cox propotional hazards models with the coxph function from the survival package. My data relates to failure of various types of endovascular interventions. I can successfully obtain the LR, Wald, and Score test p-values from the coxph.object, as well as the hazard ratio as

[R] What is going on?

2009-02-11 Thread Paul Johnston
Ok, so I'm new to R, but this is driving me crazy. In this example, I am trying to process each element in a list. code s = 1,2 l = strsplit(s, ,, fixed=TRUE) print(BEGIN) n = length(l) i = 1 while (i = n) { x = l[[i]] print(paste(x:, class(x), x)) print(BEFORE PRINT) print(x)

[R] Unexpected mfrow, layout behavior (pdf still has multiple pages)

2009-02-05 Thread Paul Johnston
My goal is to create a graph with one column and three rows into a single graphic. The mfrow, mfcol, and layout functions all have the same effect: three graphs are produced in a single pdf file, having one graph per page. This is not what I want (I didn't want multiple pages). Just before I

Re: [R] Unexpected mfrow, layout behavior (pdf still has multiple pages)

2009-02-05 Thread Paul Johnston
You are correct, thank you. I added a new subsection 'Graphics Devices' in http://wiki.r-project.org/rwiki/doku.php?id=tips:surprises:traps to document this behavior. Paul On Thu, Feb 5, 2009 at 4:58 AM, Peter Dalgaard p.dalga...@biostat.ku.dk wrote: Paul Johnston wrote: My goal is to create