[R] See what is inside a matrix
Hello everyone.. Is there any graphical tool to help me see what is inside a matrix? I have 100x100 dimensions matrix and as you already know as it does not fit on my screen R splits it into pieces. I would like to thank you in advance for your help Best Regards Alex [[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] See what is inside a matrix
Hi: One possibility is a heatmap, although there are other approaches. x - matrix(sample(1:100, 1, replace = TRUE), nrow = 100) image(x) xx - apply(x, 1, sort) # sorts the rows of x image(xx) # ggplot2 version: library(ggplot2) ggplot(melt(x), aes(x=X1, y=X2, fill=value)) + geom_tile() + scale_fill_gradientn(colour = terrain.colors(10)) See the online help page http://had.co.nz/ggplot2/scale_gradientn.html for several examples of choosing color ranges in scale_fill_gradientn(). To get similar control over image, change the col = argument according to the description on the help page of image - ?image . Another alternative is an enhanced heatmap function in package gplots. I'll leave that to you to investigate... HTH, Dennis On Thu, Sep 9, 2010 at 12:22 AM, Alaios ala...@yahoo.com wrote: Hello everyone.. Is there any graphical tool to help me see what is inside a matrix? I have 100x100 dimensions matrix and as you already know as it does not fit on my screen R splits it into pieces. I would like to thank you in advance for your help Best Regards Alex [[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. [[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] See what is inside a matrix
The image function will create a plot with the values transformed to colors. Or the View function (note the capitol V) will let you look at it in a spreadsheet like window with scrollbars. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On Behalf Of Alaios Sent: Thursday, September 09, 2010 1:23 AM To: Rhelp Subject: [R] See what is inside a matrix Hello everyone.. Is there any graphical tool to help me see what is inside a matrix? I have 100x100 dimensions matrix and as you already know as it does not fit on my screen R splits it into pieces. I would like to thank you in advance for your help Best Regards Alex [[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-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.
