Re: [R] Remove duplicated rows
Thank you Petr, Gustaf and Gabor. Your help is much appreciated. I have tried: dataset[!duplicated(dataset[,-2]),] and it solves my problem. Thanks, Chris -- View this message in context: http://r.789695.n4.nabble.com/Remove-duplicated-rows-tp2023065p2065997.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] User inputs
Thank you very much Dieter and Don. This solves my problem. :) -- View this message in context: http://r.789695.n4.nabble.com/User-inputs-tp2018251p2023067.html Sent from the R help mailing list archive at Nabble.com. __ 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] Remove duplicated rows
Hi all, I have a dataset similar to the following NameDateValue A 1/01/2000 4 A 2/01/2000 4 A 3/01/2000 5 A 4/01/2000 4 A 5/01/2000 1 B 6/01/2000 2 B 7/01/2000 1 B 8/01/2000 1 I would like R to remove duplicates based on column 1 and 3 only. In addition, I would like R to remove duplicates based on the underlying and overlying row only. For example, for A, I would like to remove row 2 only and keep row 1, 3 and 4. I have tried: unique() and replicated(), but I do not have much success. I have also tried: dataset<-c(1,diff(dataset)!=0), but I don't know how to apply it to this multi-column situation. Any help would be greatly appreciated. Thanks in advance, Chris -- View this message in context: http://r.789695.n4.nabble.com/Remove-duplicated-rows-tp2023065p2023065.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ 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] User inputs
Hi everyone, I have been searching for answers for the following questions but I don't have much success. The following questions may actually be quite simple. Any help would be greatly appreciated. (1) I have written a script which requires user input. I am using the readline() command.However, everytime when I run the script, R does not wait for the user input and proceed to the next line. Is there something like par(ask=T) to solve this problem? (2) In my script, I want it to stop running when a certain condition is met. I have tried using the stop() function, but apparently R only stops reading that line and start reading the following lines. I have also thought about quit() but it is not quite what I want. May someone please lead me to the right function please? (3) When a minor error happens, I would like to get the user permission by pressing the return key before the script continues to run. What function should I be looking at? Many thanks, Chris -- View this message in context: http://n4.nabble.com/User-inputs-tp2018251p2018251.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ 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.
Re: [R] Words appear to be bolded in the PDF output
Problem solved. Yes, I found that the text is overlaid several times! Thank you very much for your help, greatly appreciated. :) -- View this message in context: http://n4.nabble.com/Words-appear-to-be-bolded-in-the-PDF-output-tp2016971p2018219.html Sent from the R help mailing list archive at Nabble.com. __ 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] Words appear to be bolded in the PDF output
Hi all, I have written a note near each of my graphs using mtext. mtext(text,side=1,line=4,cex=0.5,adj=0) Then I have exported the graphs as a PDF file. pdf(file=name,paper='a4',width=7.27,height=10.69) The mtext appears OK in R. But it looks like it is bolded in the PDF file. http://n4.nabble.com/file/n2016971/graph.png I am not sure if this is actually my monitor/computer's problem. But I want to see if it can be fixed in R. Many thanks, Chris -- View this message in context: http://n4.nabble.com/Words-appear-to-be-bolded-in-the-PDF-output-tp2016971p2016971.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] __ 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.
Re: [R] Exporting PDF
Problem solved. I combined file.exists and while loop to create version number. Thank you very much for your help. -- View this message in context: http://n4.nabble.com/Exporting-PDF-tp2015263p2015366.html Sent from the R help mailing list archive at Nabble.com. __ 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] Exporting PDF
Hi everyone, I have written a script which exports my graphs as a PDF file using the function pdf(). For instance, I run the script and it exports a PDF called "version 1". Then, I have got a new dataset and want to run the script again. What it usually does is overwriting "version 1". But I want it to check if "version 1" already exists. If so, then I want the new graphs to be exported as "version 2", and so on. Is it possible to do it in R? Thanks in advance, Chris -- View this message in context: http://n4.nabble.com/Exporting-PDF-tp2015263p2015263.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] R exponential regression
Thank you very much Murray! Greatly appreciated. :] Chris Murray Cooper wrote: > > Chris, > > I haven't seen anyone post a reply yet so thought I'd > throw in my thoughts. I'm no R expert! > > When you talk about an exponential trend line are you > refering to: > > 1) y=ax^b > or > 2) y=ae^(bx) > > If 1) then take base10 logs of y and x and then fit them > with simple linear regression. Then calculate the antilog > of the residulas and plot these as your trendline. > > If 2) then take natural logs of y and x and follow the rest > of the procedure described in 1). > > Hope this helps. > > Murray M Cooper, Ph.D. > Richland Statistics > 9800 N 24th St > Richland, MI, USA 49083 > Mail: richs...@earthlink.net > > - Original Message - > From: "chrisli1223" > To: > Sent: Thursday, January 07, 2010 10:33 PM > Subject: [R] R exponential regression > > >> >> Hi all, >> >> I have a dataset which consists of 2 columns. I'd like to plot them on a >> x-y >> scatter plot and fit an exponential trendline. I'd like R to determine >> the >> equation for the trendline and display it on the graph. >> >> Since I am new to R (and statistics), any advice on how to achieve this >> will >> be greatly appreciated. >> >> Many thanks, >> Chris >> -- >> View this message in context: >> http://n4.nabble.com/R-exponential-regression-tp1009449p1009449.html >> Sent from the R help mailing list archive at Nabble.com. >> >> __ >> 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-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. > > -- View this message in context: http://n4.nabble.com/R-exponential-regression-tp1009449p1010914.html Sent from the R help mailing list archive at Nabble.com. __ 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] R exponential regression
Hi all, I have a dataset which consists of 2 columns. I'd like to plot them on a x-y scatter plot and fit an exponential trendline. I'd like R to determine the equation for the trendline and display it on the graph. Since I am new to R (and statistics), any advice on how to achieve this will be greatly appreciated. Many thanks, Chris -- View this message in context: http://n4.nabble.com/R-exponential-regression-tp1009449p1009449.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Polynomial equation
Thank you very much for your help. Greatly appreciated! However, due to my limited stats background, I am unable to find out the equation of the trendline from the summary table. Besides, how do I fit the trendline on the graph? I intend to put the first column of data onto x axis and the second column onto y axis. Are they the x and y in your example? Many thanks, Chris Moshe Olshansky-2 wrote: > > Hi Chris, > > You can use lm with poly (look ?lm, ?poly). > If x and y are your arrays of points and you wish to fit a polynom of > degree 4, say, enter: model <- lm(y~poly(x,4,raw=TRUE) and then > summary(model) > The raw=TRUE causes poly to use 1,x,x^2,x^3,... instead of orthogonal > polynomials (which are "better" numerically but may be not what you need). > > Regards, > Moshe. > > --- On Fri, 8/1/10, chrisli1223 wrote: > >> From: chrisli1223 >> Subject: [R] Polynomial equation >> To: r-help@r-project.org >> Received: Friday, 8 January, 2010, 12:32 PM >> >> Hi all, >> >> I have got a dataset. In Excel, I can fit a polynomial >> trend line >> beautifully. However, the equation that Excel calculates >> appear to be >> incorrect. So I am thinking about using R. >> >> My questions are: >> (1) How do I fit a polynomial trendline to a graph? >> (2) How do I calculate and display the equation for that >> trendline? >> >> Many thanks for your help. Greatly appreciated. >> >> Chris >> -- >> View this message in context: >> http://n4.nabble.com/Polynomial-equation-tp1009398p1009398.html >> Sent from the R help mailing list archive at Nabble.com. >> >> __ >> 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-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. > > -- View this message in context: http://n4.nabble.com/Polynomial-equation-tp1009398p1009438.html Sent from the R help mailing list archive at Nabble.com. __ 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] Polynomial equation
Hi all, I have got a dataset. In Excel, I can fit a polynomial trend line beautifully. However, the equation that Excel calculates appear to be incorrect. So I am thinking about using R. My questions are: (1) How do I fit a polynomial trendline to a graph? (2) How do I calculate and display the equation for that trendline? Many thanks for your help. Greatly appreciated. Chris -- View this message in context: http://n4.nabble.com/Polynomial-equation-tp1009398p1009398.html Sent from the R help mailing list archive at Nabble.com. __ 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] R treating time
Hi all, I have imported a value 3:00 from Excel into R using read.csv. I want R to recognise it as 3:00am (time data). How do I do it? Thanks in advance, Chris -- View this message in context: http://n4.nabble.com/R-treating-time-tp1008608p1008608.html Sent from the R help mailing list archive at Nabble.com. __ 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.
