Re: [R] Axes value format
On 08/05/2012, David Winsemius dwinsem...@comcast.net wrote: On May 8, 2012, at 2:23 PM, Vihan Pandey wrote: On 8 May 2012 19:47, John Kane jrkrid...@inbox.com wrote: Quite likely, but we need to know what you are doing and what graphics package you are using. PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Frightfully sorry about that. I'm using R on a Mac, and its a simple plot using plot() which is taking values from a CSV file, let me illustrate for one dataset : See if this is helpful. Untested, since you still do not have a reproducible example for us to work with. x - c(12345, 1234567, 123) paste( round( x/c(1, 1000, 100)[findInterval(x, c(1,1000,100)) ], 2), c(,K,M)[findInterval(x, c(1,1000,100)) ] ) [1] 12.35 K 1.23 M 123 Thanks, xaxt, yaxt in plot() did the job. Sorry for not posting a reproducible example I just needed a quick fix which I was sure would be a simple option in plot() or elsewhere. Thanks and Cheers! - vihan -- David. == #!/usr/bin/Rscript out_file = foobar.pdf pdf(out_file, height=8.5, width=11) my_values - read.csv(foo.csv,head=TRUE,sep=,) plot(my_values$num_sims, my_values$exec_time, xlab=Number of Simulations, ylab=Execution Time(in milliseconds), col=red, main=Execution Time for Simulations) lines(my_values$num_sims,my_values$exec_time,col=red) my_values2 - read.csv(bar.csv,head=TRUE,sep=,) lines(my_values2$num_sims,my_values2$exec_time,col=blue) points(my_values2$num_sims,my_values2$exec_time,col=blue) legend(topright, lty=c(1,1), c(foo,bar), col=c(red,blue) ); dev.off() print(paste(Plot was saved in:, getwd())) == foo.csv and bar.csv have values like: num_sims,exec_time 100,44556 200,89112 300,133668 etc. Please let me know if you require any additional information. Cheers! - vihan John Kane Kingston ON Canada -Original Message- From: vihanpan...@gmail.com Sent: Tue, 8 May 2012 19:29:45 +0200 To: r-help@r-project.org Subject: [R] Axes value format Hi all, I have some graphs where the values on the X and Y axes are by default in exponent form like 2e+05 or 1.0e+07. Is it possible to make them in a more readable form like 10M for 1.0e+07 or 200K for 2e+05? Thanks and Regards, - vihan __ 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. FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! __ 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. David Winsemius, MD West Hartford, CT __ 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] Axes value format
On 08/05/2012, John Kane jrkrid...@inbox.com wrote: Actually I meant a working example and some data (See ?dput for a handy way to supply data) It is also a good idea to include the information from sessionInfo() I think David W has a good approach. Otherwise you might just want to write the axis yourself. = x - c(100, 200, 300) y - c( 44556, 89112, 133668) nms - c(1M, 2M, 3M) plot(x,y, xaxt=n) axis(1, x, labels=nms) Sorry for not posting a working example and some data, I just wanted a quick fix and didn't know people would work so much for my query few mailing lists do so :-) Thanks though, your xaxt option did the trick. I will learn from this and read up on dput and sessioninfo() Thanks and Cheers! - vihan John Kane Kingston ON Canada -Original Message- From: vihanpan...@gmail.com Sent: Tue, 8 May 2012 20:23:21 +0200 To: jrkrid...@inbox.com Subject: Re: [R] Axes value format On 8 May 2012 19:47, John Kane jrkrid...@inbox.com wrote: Quite likely, but we need to know what you are doing and what graphics package you are using. PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Frightfully sorry about that. I'm using R on a Mac, and its a simple plot using plot() which is taking values from a CSV file, let me illustrate for one dataset : == #!/usr/bin/Rscript out_file = foobar.pdf pdf(out_file, height=8.5, width=11) my_values - read.csv(foo.csv,head=TRUE,sep=,) plot(my_values$num_sims, my_values$exec_time, xlab=Number of Simulations, ylab=Execution Time(in milliseconds), col=red, main=Execution Time for Simulations) lines(my_values$num_sims,my_values$exec_time,col=red) my_values2 - read.csv(bar.csv,head=TRUE,sep=,) lines(my_values2$num_sims,my_values2$exec_time,col=blue) points(my_values2$num_sims,my_values2$exec_time,col=blue) legend(topright, lty=c(1,1), c(foo,bar), col=c(red,blue) ); dev.off() print(paste(Plot was saved in:, getwd())) == foo.csv and bar.csv have values like: num_sims,exec_time 100,44556 200,89112 300,133668 etc. Please let me know if you require any additional information. Cheers! - vihan John Kane Kingston ON Canada -Original Message- From: vihanpan...@gmail.com Sent: Tue, 8 May 2012 19:29:45 +0200 To: r-help@r-project.org Subject: [R] Axes value format Hi all, I have some graphs where the values on the X and Y axes are by default in exponent form like 2e+05 or 1.0e+07. Is it possible to make them in a more readable form like 10M for 1.0e+07 or 200K for 2e+05? Thanks and Regards, - vihan __ 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. FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! GET FREE SMILEYS FOR YOUR IM EMAIL - Learn more at http://www.inbox.com/smileys Works with AIM®, MSN® Messenger, Yahoo!® Messenger, ICQ®, Google Talk™ and most webmails __ 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] Axes value format
On 08/05/2012, arun smartpink...@yahoo.com wrote: Hi Vihan, The link below might be helpful. (http://stackoverflow.com/questions/3415097/controlling-number-formatting-at-axis-of-r-plots) Thanks, the xaxt parameter in plot() solved the problem. Thanks and Cheers! - vihan A.K. - Original Message - From: Vihan Pandey vihanpan...@gmail.com To: r-help r-help@r-project.org Cc: Sent: Tuesday, May 8, 2012 1:29 PM Subject: [R] Axes value format Hi all, I have some graphs where the values on the X and Y axes are by default in exponent form like 2e+05 or 1.0e+07. Is it possible to make them in a more readable form like 10M for 1.0e+07 or 200K for 2e+05? Thanks and Regards, - vihan __ 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.
[R] Axes value format
Hi all, I have some graphs where the values on the X and Y axes are by default in exponent form like 2e+05 or 1.0e+07. Is it possible to make them in a more readable form like 10M for 1.0e+07 or 200K for 2e+05? Thanks and Regards, - vihan __ 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] Axes value format
On 8 May 2012 19:47, John Kane jrkrid...@inbox.com wrote: Quite likely, but we need to know what you are doing and what graphics package you are using. PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Frightfully sorry about that. I'm using R on a Mac, and its a simple plot using plot() which is taking values from a CSV file, let me illustrate for one dataset : == #!/usr/bin/Rscript out_file = foobar.pdf pdf(out_file, height=8.5, width=11) my_values - read.csv(foo.csv,head=TRUE,sep=,) plot(my_values$num_sims, my_values$exec_time, xlab=Number of Simulations, ylab=Execution Time(in milliseconds), col=red, main=Execution Time for Simulations) lines(my_values$num_sims,my_values$exec_time,col=red) my_values2 - read.csv(bar.csv,head=TRUE,sep=,) lines(my_values2$num_sims,my_values2$exec_time,col=blue) points(my_values2$num_sims,my_values2$exec_time,col=blue) legend(topright, lty=c(1,1), c(foo,bar), col=c(red,blue) ); dev.off() print(paste(Plot was saved in:, getwd())) == foo.csv and bar.csv have values like: num_sims,exec_time 100,44556 200,89112 300,133668 etc. Please let me know if you require any additional information. Cheers! - vihan John Kane Kingston ON Canada -Original Message- From: vihanpan...@gmail.com Sent: Tue, 8 May 2012 19:29:45 +0200 To: r-help@r-project.org Subject: [R] Axes value format Hi all, I have some graphs where the values on the X and Y axes are by default in exponent form like 2e+05 or 1.0e+07. Is it possible to make them in a more readable form like 10M for 1.0e+07 or 200K for 2e+05? Thanks and Regards, - vihan __ 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. FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! __ 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] histogram break width
Hi all, I am generating histograms with the following R script : #!/usr/bin/Rscript out_file = histo.png png(out_file) scan(values.csv) - myvalues hist(myvalues, breaks = 50) dev.off() print(paste(Plot was saved in:, getwd())) I want the histogram to have a larger number of breaks, but a smaller break width, the idea is to make it appear smoother like a filled curve. If I keep increasing breaks it starts looking messy. Any suggestions? Thanks! - vihan __ 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] getting multiple plots on a single plot
Hi all, I have the following R script : #!/usr/bin/Rscript out_file = hybrid.pdf pdf(out_file, height=8.5, width=11) myvalues_1M - read.csv(hybrid_sims_1M.csv,head=TRUE,sep=,) plot(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=red,main=For 1 million simulations) lines(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,col=red) myvalues_5M - read.csv(hybrid_sims_5M.csv,head=TRUE,sep=,) plot(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=blue,main=For 5 million simulations) lines(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,col=blue) myvalues_10M - read.csv(hybrid_sims_10M.csv,head=TRUE,sep=,) plot(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=green,main=For 10 million simulations) lines(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,col=green) dev.off() print(paste(Plot was saved in:, getwd())) This generates a 3 page pdf file with a plot on each page. They look like this : http://s17.postimage.org/ud9ej1cnj/alpha1.png http://s13.postimage.org/7q3snqsrr/alpha2.png http://s14.postimage.org/sf374f12p/alpha3.png I want to plot all the 3 in one graph, in one page with the respective colours - red, blue, and green. Any ideas on how? Thanks, - vihan __ 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] getting multiple plots on a single plot
On 22 March 2012 20:23, R. Michael Weylandt michael.weyla...@gmail.com wrote: Don't use plot three times -- it opens a new page when pdf() is your current device. Do the first with plot -- then use lines() online from there to the end. Thanks a million that did the job! :-) Cheers! - vihan Michael On Thu, Mar 22, 2012 at 3:18 PM, Vihan Pandey vihanpan...@gmail.com wrote: Hi all, I have the following R script : #!/usr/bin/Rscript out_file = hybrid.pdf pdf(out_file, height=8.5, width=11) myvalues_1M - read.csv(hybrid_sims_1M.csv,head=TRUE,sep=,) plot(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=red,main=For 1 million simulations) lines(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,col=red) myvalues_5M - read.csv(hybrid_sims_5M.csv,head=TRUE,sep=,) plot(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=blue,main=For 5 million simulations) lines(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,col=blue) myvalues_10M - read.csv(hybrid_sims_10M.csv,head=TRUE,sep=,) plot(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=green,main=For 10 million simulations) lines(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,col=green) dev.off() print(paste(Plot was saved in:, getwd())) This generates a 3 page pdf file with a plot on each page. They look like this : http://s17.postimage.org/ud9ej1cnj/alpha1.png http://s13.postimage.org/7q3snqsrr/alpha2.png http://s14.postimage.org/sf374f12p/alpha3.png I want to plot all the 3 in one graph, in one page with the respective colours - red, blue, and green. Any ideas on how? Thanks, - vihan __ 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.
Re: [R] getting multiple plots on a single plot
On 22 March 2012 20:54, Chris Snook snoo...@bellsouth.net wrote: vihan, you jsut need to add the following statement in the subsequent plot commands: add = TRUE so that your second and later plot commands look similar to: plot(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=blue,main=For 5 million simulations, add = TRUE) Thanks, but that still does keeps it on different pages and generates warnings : Warning messages: 1: In plot.window(...) : add is not a graphical parameter 2: In plot.xy(xy, type, ...) : add is not a graphical parameter 3: In axis(side = side, at = at, labels = labels, ...) : add is not a graphical parameter 4: In axis(side = side, at = at, labels = labels, ...) : add is not a graphical parameter 5: In box(...) : add is not a graphical parameter 6: In title(...) : add is not a graphical parameter Cheers! - vihan HTH Chris On 03/22/2012 03:18 PM, Vihan Pandey wrote: Hi all, I have the following R script : #!/usr/bin/Rscript out_file = hybrid.pdf pdf(out_file, height=8.5, width=11) myvalues_1M - read.csv(hybrid_sims_1M.csv,head=TRUE,sep=,) plot(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=red,main=For 1 million simulations) lines(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,col=red) myvalues_5M - read.csv(hybrid_sims_5M.csv,head=TRUE,sep=,) plot(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=blue,main=For 5 million simulations) lines(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,col=blue) myvalues_10M - read.csv(hybrid_sims_10M.csv,head=TRUE,sep=,) plot(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=green,main=For 10 million simulations) lines(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,col=green) dev.off() print(paste(Plot was saved in:, getwd())) This generates a 3 page pdf file with a plot on each page. They look like this : http://s17.postimage.org/ud9ej1cnj/alpha1.png http://s13.postimage.org/7q3snqsrr/alpha2.png http://s14.postimage.org/sf374f12p/alpha3.png I want to plot all the 3 in one graph, in one page with the respective colours - red, blue, and green. Any ideas on how? Thanks, - vihan __ 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. __ 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] getting multiple plots on a single plot
On 22 March 2012 21:06, David Winsemius dwinsem...@comcast.net wrote: On Mar 22, 2012, at 3:18 PM, Vihan Pandey wrote: Hi all, I have the following R script : #!/usr/bin/Rscript out_file = hybrid.pdf pdf(out_file, height=8.5, width=11) At this point (assuming that you want three separate plots on the same page which is unclear but you do use different titles and ylabs, so I think this is implied) you would either be using layout() ?layout or par() with arguments mfrow, mfcol, or mfg. ?par Thanks David, I'm a newbie at R and am not familiar with par() and layout(), I will check them out! Cheers! - vihan myvalues_1M - read.csv(hybrid_sims_1M.csv,head=TRUE,sep=,) plot(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=red,main=For 1 million simulations) lines(myvalues_1M$num_sims_per_thread,myvalues_1M$time_per_sim,col=red) If on the other hand you want one plot frame with overlaid point/lines/etc, then you should be determining your x and y limits before any plots and putting in the same limits for each plot Adding all your labels on the first plot and using: par(new=TRUE) # which seems completely backward to me. # I say again ... ? par myvalues_5M - read.csv(hybrid_sims_5M.csv,head=TRUE,sep=,) plot(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=blue,main=For 5 million simulations) lines(myvalues_5M$num_sims_per_thread,myvalues_5M$time_per_sim,col=blue) myvalues_10M - read.csv(hybrid_sims_10M.csv,head=TRUE,sep=,) plot(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,xlab=Number of Simulations per Thread,ylab=Time per 1 million Simulations(in milliseconds),col=green,main=For 10 million simulations) lines(myvalues_10M$num_sims_per_thread,myvalues_10M$time_per_sim,col=green) dev.off() print(paste(Plot was saved in:, getwd())) This generates a 3 page pdf file with a plot on each page. They look like this : http://s17.postimage.org/ud9ej1cnj/alpha1.png http://s13.postimage.org/7q3snqsrr/alpha2.png http://s14.postimage.org/sf374f12p/alpha3.png I want to plot all the 3 in one graph, in one page with the respective colours - red, blue, and green. Any ideas on how? Thanks, - vihan __ 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. David Winsemius, MD West Hartford, CT __ 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] fitting a histogram to a Gaussian curve
Hello, I am trying to fit my histogram to a smooth Gaussian curve(the data closely resembles one except a few bars). This is my code : #!/usr/bin/Rscript out_file = irc_20M_opencl_test.png png(out_file) scan(my.csv) - myvals hist(myvals, breaks = 50, main = My Distribution,xlab = My Values) pdens - density(myvals, na.rm=T) plot(pdens, col=black, lwd=3, xlab=My values, main=Default KDE) dev.off() print(paste(Plot was saved in:, getwd())) the problem here is that I a jagged distribution, you can see the result : http://s15.postimage.org/9ucmkx3bf/foobar.png this is the original histogram : http://s12.postimage.org/e0lfp7d5p/foobar2.png any ideas on how I can smoothen it to a Gaussian curve? Thanks, - vihan __ 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] fitting a histogram to a Gaussian curve
I see, that could be an option, however isn't there a fitting function which would do that on given data? On 19 March 2012 19:49, R. Michael Weylandt michael.weyla...@gmail.com wrote: If I understand you correctly, a univariate Gaussian distribution is uniquely determined by its first two moments so you can just fit those directly (using sample mean for population mean and sample variance with Besel's correction for population variance) and get the best Gaussian (in a ML sense). E.g., x - rnorm(500, 3, 2) hist(x, freq = FALSE) lines(seq(min(x), max(x), length.out = 300) - y, dnorm(y, mean(x), sd(x)), col = 2) Hope this helps, Michael On Mon, Mar 19, 2012 at 12:47 PM, Vihan Pandey vihanpan...@gmail.com wrote: Hello, I am trying to fit my histogram to a smooth Gaussian curve(the data closely resembles one except a few bars). This is my code : #!/usr/bin/Rscript out_file = irc_20M_opencl_test.png png(out_file) scan(my.csv) - myvals hist(myvals, breaks = 50, main = My Distribution,xlab = My Values) pdens - density(myvals, na.rm=T) plot(pdens, col=black, lwd=3, xlab=My values, main=Default KDE) dev.off() print(paste(Plot was saved in:, getwd())) the problem here is that I a jagged distribution, you can see the result : http://s15.postimage.org/9ucmkx3bf/foobar.png this is the original histogram : http://s12.postimage.org/e0lfp7d5p/foobar2.png any ideas on how I can smoothen it to a Gaussian curve? Thanks, - vihan __ 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.
Re: [R] fitting a histogram to a Gaussian curve
I'll check it out, thanks a million Micheal! On 19 March 2012 19:59, R. Michael Weylandt michael.weyla...@gmail.com wrote: Take a look at fitdistr in the MASS package. fitdistr(x, normal) I don't think you need to supply start values for the normal since its loglikelihood function is nicely behaved. You may need to for harder distributions. Michael On Mon, Mar 19, 2012 at 2:54 PM, Vihan Pandey vihanpan...@gmail.com wrote: I see, that could be an option, however isn't there a fitting function which would do that on given data? On 19 March 2012 19:49, R. Michael Weylandt michael.weyla...@gmail.com wrote: If I understand you correctly, a univariate Gaussian distribution is uniquely determined by its first two moments so you can just fit those directly (using sample mean for population mean and sample variance with Besel's correction for population variance) and get the best Gaussian (in a ML sense). E.g., x - rnorm(500, 3, 2) hist(x, freq = FALSE) lines(seq(min(x), max(x), length.out = 300) - y, dnorm(y, mean(x), sd(x)), col = 2) Hope this helps, Michael On Mon, Mar 19, 2012 at 12:47 PM, Vihan Pandey vihanpan...@gmail.com wrote: Hello, I am trying to fit my histogram to a smooth Gaussian curve(the data closely resembles one except a few bars). This is my code : #!/usr/bin/Rscript out_file = irc_20M_opencl_test.png png(out_file) scan(my.csv) - myvals hist(myvals, breaks = 50, main = My Distribution,xlab = My Values) pdens - density(myvals, na.rm=T) plot(pdens, col=black, lwd=3, xlab=My values, main=Default KDE) dev.off() print(paste(Plot was saved in:, getwd())) the problem here is that I a jagged distribution, you can see the result : http://s15.postimage.org/9ucmkx3bf/foobar.png this is the original histogram : http://s12.postimage.org/e0lfp7d5p/foobar2.png any ideas on how I can smoothen it to a Gaussian curve? Thanks, - vihan __ 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.
[R] Doing Mathematica Quantile[] function in R
Hi all, I am an R newbie trying to do some calculations I do in Mathematica in R on a GNU/Linux system. The main thing I am interested in doing is taking a 0.999 quantile on a data set in a file who's data is normally distributed, say foo.csv. e.g in Mathematica if I have something like this : a=Import[foo.csv] b=Transpose[a][[1]] Quantile[b,0.999] In R I can load all the data into b with : scan(foo.csv) - b now, I can't find a function anywhere which would calculate the Quantile on the dataset in b. Any advice? Also, I am guessing Mathematica does a lot of special things to ensure a very accurate Quantile value, so if anyone has any ideas on incorporating those as well, it would be great. Thanks and Regards, - vihan __ 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] scripting qqplot and qqnorm
Hi all, I am an R newbie, and I have a question about scripting. I have the following lines which I want to put int\ o a script which I can call from the shell of a Mac/Linux machine : myrns - read.csv(file=/Users/vihan/test.csv,sep=,header=FALSE) qqnorm(myrns) qqline(myrns) This works fine on an interactive R session. However, as I understand the basic framework of an R script for executing on the shell to get a pdf output it is something like : #!/usr/bin/Rscript … list inputs… pdf(plotexample.pdf, width=7, height=9) plot(...) dev.off() print(paste(Plot was saved in:, getwd())) therefore, I do : #!/usr/bin/Rscript myrns - read.csv(file=/Users/vihan/test.csv,sep=,header=FALSE) qqnorm(myrns) dev.off() print(paste(Plot was saved in:, getwd())) but it does not work, the pdf generated is something my pdf viewer cannot understand, plot(qqnorm(myrns)) and plot(qqline(myrns)) don't work either. Any ideas on what I'm doing wrong? Moreover, would it be possible to have both qqline(myrns) and qqnorm(myrns) on the same pdf? Cheers! - vihan __ 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.
