Re: [R] calibration curve for cph()

Build a prediction function using 'Function' that gets applied to set2. Calibrate and validate. -- David Sent from my iPhone On Aug 15, 2011, at 11:31 AM, array chip wrote: > Hi, the calibrate.cph() function in rms package generate calibration curve > for Cox model on the same dataset wher

Re: [R] area under the curve

Why re-invent? Use lrm in rms. -- David Sent from my iPhone On Aug 15, 2011, at 10:07 AM, Mariana Varela wrote: > HI there, I have been trying to use a code posted on R help to be able to > calculate area under the curve for complicated data points and there seems to > be an issue with th

Re: [R] Regression - how to deal with past values?

Have you done any searching (with for instance the term "forecast")? If so then you should describe what you found and why it doesn't meet your needs. -- David Sent from my iPhone On Aug 15, 2011, at 7:54 PM, "Eduardo M. A. M.Mendes" wrote: > Many thanks but I am not looking for a remote

Re: [R] what can one do with (to) '..." ?

Inside your function that has a ... argument, you can get the optional arguments with : Arg.dot <- list(...) Section 2.1.5 of the R Language Definition which should be accessible from the help facility would appear to be sensible place to start. "Programming for Data Analysis" could also be pu

Re: [R] Linear Regression with Linear Equality Constraint

On Oct 31, 2011, at 3:31 PM, Bert Gunter wrote: > Well, if I understand the question correctly (following the posting guide > would have spared guessing, as usual), forget packages -- nothing more than > elementary algebra is needed. > > e.g. > > lm(y ~ x1 + x2 + x3) subject to the constrain

Re: [R] Linear Regression with Linear Equality Constraint

On Oct 31, 2011, at 5:12 PM, Comcast wrote: > > > On Oct 31, 2011, at 3:31 PM, Bert Gunter wrote: > >> Well, if I understand the question correctly (following the posting guide >> would have spared guessing, as usual), forget packages -- nothing more than >>

Re: [R] lapply and Two TimeStamps as input

Provide some sample data. For instance, a data frame with two columns and the function. On Oct 31, 2011, at 6:37 PM, Alaios wrote: > Dear all, > > I have a function that recognizes the following format for timestamps > "%Y-%m-%d %H:%M:%S" > > my function takes two input arguments the TimeSt

Re: [R] oversampling code

On Oct 31, 2011, at 1:54 PM, loubna ibn majdoub hassani wrote: > Hir > I have an umbalanced data set where I want to predict a binary variable Y. > I want to do an under sampling by keeping all the 1 and taking just some of > the 0 such as I'll have 90% of 0 and 10% of 1. ou haven' t given mu

Re: [R] Vectorize 'eol' characters

On Oct 31, 2011, at 2:01 PM, "Stefano Conti" wrote: > Thanks to Dr Shepard and Prof Riply for their helpful replies. > > In my original query I should have also specified that I have tried the > trick, also suggested by Prof Ripley, of appending the extra-column to the > original matrix befo

Re: [R] building a subscript programatically

Leaving the indices empty should give you what I'm guessing you want/expect. x[,,2]#. TRUE would also work, just not in a list. David. On Nov 1, 2011, at 6:14 PM, Ernest Adrogué wrote: > Hi, > > On ocasion, you need to subscript an array that has an arbitrary > (ie. not known in advance)

[R] Reading an excel file

What is the best way to read in data of any type from an Excel 2016 .xlsx file? Thanks Bernard Sent from my iPhone so please excuse the spelling!" __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo

[R] Weather station data

Is anyone aware of any R capability to access data at weather stations around the globe? An R package perhaps? Thanks Bernard Sent from my iPhone so please excuse the spelling!" __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https

[R] Error trapping in R

What is the recommended way to trap errors in R? My main need is to be able to trap an error and then skip a section of code if an error has occurred. In VB for Excel I used the “On Error goto .” construct to do this. Bernard Sent from my iPhone so please excuse the spelling!" _

Re: [R] Error trapping in R

Thanks Bernard Sent from my iPhone so please excuse the spelling!" > On Feb 27, 2019, at 4:05 PM, Duncan Murdoch wrote: > >> On 27/02/2019 3:55 p.m., Bernard Comcast wrote: >> What is the recommended way to trap errors in R? My main need is to be able >> to

Re: [R] [FORGED] Re: Quantile Density Contours

That thought had crossed my mind so thanks for that clarification Bert. i think you are correct and so the plot I am looking at must be doing something different than I was thinking. Thanks Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 27, 2019, at 5:18 PM, Bert Gunter

Re: [R] [FORGED] Re: Quantile Density Contours

To follow on Jeff, is there a function to do 2-D (double) numerical integration in R? Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 27, 2019, at 6:38 PM, Jeff Newmiller wrote: > > Regardless of how many dimensions you have for independent variables, the > density is one

Re: [R] [FORGED] Re: Quantile Density Contours

No - how do I access that? Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 27, 2019, at 6:57 PM, Jeff Newmiller wrote: > > I don't know. Have you looked at the Multivariate Task View? > >> On March 27, 2019 3:43:52 PM PDT, Bernard Comcast >

Re: [R] [FORGED] Re: Quantile Density Contours

Thanks Petr Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 28, 2019, at 2:26 AM, PIKAL Petr wrote: > > Hallo Bernard > > I did not follow all emails in this thread but it seems to me that your > request is similar to Bioconductor packages dealing with Flow Cytometry data

Re: [R] [FORGED] Re: Quantile Density Contours

I will take a look but the hdrcde package appears to give me the plots I was looking for. Thanks Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 28, 2019, at 10:16 PM, Jeff Newmiller wrote: > > I just found the "ks" package which looks promising... [1] > > https://cran.r

Re: [R] Quantile Density Contours

Thanks Abs - I was able to get the plot I needed with the hdrcde package but I will check out your package as well. I continue to be impressed with the power Of R and the various packages available. Thanks again Bernard Sent from my iPhone so please excuse the spelling!" > On Mar 29, 2019, a

Re: [R] Inappropriate color name

If the word Indian refers to India, the place of origin for the color, then referring to it by this name gives an acknowledgement to this fact and I would have assumed such acknowledgement is a positive thing. Bernard Sent from my iPhone so please excuse the spelling!" > On Nov 17, 2020, at 4:

Re: [R] Summarizing select columns in a data frame

Thanks Bert Bernard Sent from my iPhone so please excuse the spelling!" > On Jan 17, 2021, at 3:48 PM, Bert Gunter wrote: > >  > There are literally tons of ways to do this sort of thing in R. > > In base R ?tapply and friends, especially ?ave and ?by that may be close to > what you want. >

Re: [R] Summarizing select columns in a data frame

Thanks David Bernard Sent from my iPhone so please excuse the spelling!" > On Jan 17, 2021, at 5:59 PM, David Winsemius wrote: > >  >> On 1/17/21 12:15 PM, Bernard McGarvey wrote: >> I have a data frame that consists of several factor columns say A, B, C, D, >> and E and several columns conta

Re: [R] Col names in a data frame

Thanks - I had seen that parameter but did not think the ( would be illegal but now I understand why it considers it illegal. Thanks again Bernard Sent from my iPhone so please excuse the spelling!" > On Jan 21, 2021, at 4:14 PM, Duncan Murdoch wrote: > > On 21/01/2021 3:58 p.m., Bernard McG

Re: [R] Col names in a data frame

Thanks - I had seen that parameter but did not think the ( would be illegal but now I understand why it considers it illegal. Thanks again Bernard Sent from my iPhone so please excuse the spelling!" > On Jan 21, 2021, at 4:14 PM, Duncan Murdoch wrote: > > On 21/01/2021 3:58 p.m., Bernard Mc

Re: [R] Error loading "XLConnect" library

Thanks Marc Bernard Sent from my iPhone so please excuse the spelling!" > On Apr 14, 2021, at 2:20 PM, Marc Schwartz wrote: > > Hi, > > When you experience errors with a third party package like that, one of the > first steps to take is to review the results of CRAN testing on the package.

Re: [R] Suggestions as to how to proceed would be appreciated...............

Its simply a query to know what tools/packages R has for correlating single values with multivalued vectors. If that is outside the scope of the PG then so be it. Bernard Sent from my iPhone so please excuse the spelling!" > On May 22, 2022, at 1:52 PM, Bert Gunter wrote: > >  > Please read

Re: [R] Pause script at input from terminal (interactive use)

I have used the shiny package to create a web page user interface and it works well. Bernard Sent from my iPhone so please excuse the spelling!" > On Apr 19, 2019, at 1:12 AM, Luigi Marongiu wrote: > > I am realizing as well that R is not the best option for an > interactive session. I changed

[R] Surface plots....

Does anyone have a recommendation for the best package/function for doing surface plots? Bernard Sent from my iPhone so please excuse the spelling!" __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listin

Re: [R] Surface plots....

;The trouble with having an open mind is that people keep coming along >>> and sticking things into it." >>> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) >>> >>> >>> On Thu, Apr 25, 20

[R] Curve fitting

Any recommendations on an R package to fit data to a nonlinear model Y=f(x) with a single x and y variable? I want to be able to generate parameter uncertainty estimates and prediction uncertainties if possible. Bernard Sent from my iPhone so please excuse the spelling!" __

Re: [R] Curve fitting

Thanks Jeff Bernard Sent from my iPhone so please excuse the spelling!" > On Apr 5, 2020, at 3:14 PM, Jeff Newmiller wrote: > > stats::nlm? > >> On April 5, 2020 11:53:10 AM PDT, Bernard Comcast >> wrote: >> Any recommendations on an R package to fit

[R] Correlated sampling

I want to create a Monte Carlo simulation with 4 input parameters that are correlated with each other. The parameters have normal distributions and the variance/covariance matrix is known. Are there any R functions available to generate such correlated normal random variables? Bernard Sent from

[R] Interactive stats packages

Do any of you know of any interactive stats analysis packages built on top of R? Bernard Sent from my iPhone so please excuse the spelling!" __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help

Re: [R] Interactive stats packages

Yes Ista, that is what I meant by interactive. Something that is menu driven with a GUI rather than command line. Thanks Bernard Sent from my iPhone so please excuse the spelling!" > On Apr 16, 2020, at 5:44 PM, Ista Zahn wrote: > > On Thu, Apr 16, 2020 at 4:48 PM Bernard Co

Re: [R] Interactive stats packages

open mind is that people keep coming along > and sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > >> On Thu, Apr 16, 2020 at 2:44 PM Ista Zahn wrote: >> >>> On Thu, Apr 16, 2020 at 4:48 PM Bernard Comcast

Re: [R] Interactive stats packages

Thanks Bernard Sent from my iPhone so please excuse the spelling!" > On Apr 16, 2020, at 9:01 PM, Ista Zahn wrote: > > On Thu, Apr 16, 2020 at 8:05 PM Bernard Comcast > wrote: >> >> Yes Ista, that is what I meant by interactive. Something that is menu driv

Re: [R] COVID-19 datasets...

Thanks, i will take a look Bernard Sent from my iPhone so please excuse the spelling!" > On May 4, 2020, at 2:49 PM, James Spottiswoode wrote: > > Sure. COVID-19 Data Repository by the Center for Systems Science and > Engineering (CSSE) at Johns Hopkins University is available here: > > http

Re: [R] Fitting Richards' curve

John, have you ever looked at interval optimization as an alternative since it can lead to provably global minima? Bernard Sent from my iPhone so please excuse the spelling!" > On May 13, 2020, at 8:42 AM, J C Nash wrote: > > The Richards' curve is analytic, so nlsr::nlxb() should work better

Re: [R] Fitting Richards' curve

Also, in the full curve referenced on Wikpedia, the parameters Q And M are confounded - you only need one or the other But not both. If you are using both and trying to estimate them both you will have problems. I have fitted these curves quite easily using the Solver in Excel. Bernard Sent fro

Re: [R] Fitting Richards' curve

I have been using nlsr() to fit s curves to Covid-19 data over the past few weeks and I have not had any issues. Bernard Sent from my iPhone so please excuse the spelling!" > On May 13, 2020, at 5:16 PM, Abby Spurdle wrote: > > Hi Christofer, > > This doesn't really answer your question. > B

Re: [R] plot shows exponential values incompatible with data

Use the xlim option in the plot function? Bernard Sent from my iPhone so please excuse the spelling!" > On Jul 9, 2020, at 10:06 AM, Luigi Marongiu wrote: > > Thank you, > but why it does not work in linear? With the log scale, I know it > works but I am not looking for it; is there a way to f

Re: [R] How to run Hutcheson t-test on R?

This website has an example calculation shown in Excel Which might help in programming it in R. https://www.dataanalytics.org.uk/comparing-diversity/ Bernard Sent from my iPhone so please excuse the spelling!" > On Sep 7, 2020, at 6:17 PM, Rolf Turner wrote: > >  >> On Mon, 7 Sep 2020 11:17