Adding Error Bars To Bar Plots In R
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How To Add Error Bars To A Bar Graph In Excel
Curve for the United States Stanford Workshop in Biodemography → Plotting Error Bars in R August 24th, 2009 · how to add error bars to bar graph in excel 2010 52 Comments · R One common frustration that I have heard expressed about R is that there is no automatic way to plot error bars (whiskers really) on bar plots. I
How To Add Error Bars To Bar Graph In Excel 2013
just encountered this issue revising a paper for submission and figured I'd share my code. The following simple function will plot reasonable error bars on a bar plot. PLAIN TEXT R: error.bar <- function(x, y, upper, lower=upper, length=0.1,...){ if(length(x) != length(y) | length(y) !=length(lower) | length(lower) != length(upper)) stop("vectors must be same length") arrows(x,y+upper, x, y-lower, angle=90, code=3, length=length, ...) } Now let's use vertical error bars in excel it. First, I'll create 5 means drawn from a Gaussian random variable with unit mean and variance. I want to point out another mild annoyance with the way that R handles bar plots, and how to fix it. By default, barplot() suppresses the X-axis. Not sure why. If you want the axis to show up with the same line style as the Y-axis, include the argument axis.lty=1, as below. By creating an object to hold your bar plot, you capture the midpoints of the bars along the abscissa that can later be used to plot the error bars. PLAIN TEXT R: y <- rnorm(500, mean=1) y <- matrix(y,100,5) y.means <- apply(y,2,mean) y.sd <- apply(y,2,sd) barx <- barplot(y.means, names.arg=1:5,ylim=c(0,1.5), col="blue", axis.lty=1, xlab="Replicates", ylab="Value (arbitrary units)") error.bar(barx,y.means, 1.96*y.sd/10) Now let's say we want to create the very common plot in reporting the results of scientific experiments: adjacent bars representing the treatment and the control with 95% confidence intervals on the estimates of the means. The trick here is to create a 2 x n matrix of your bar values, where each row holds the values to be compared (e.g., treatment
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Barplot With Error Bars Ggplot2
About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or error.bar function r posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of http://monkeysuncle.stanford.edu/?p=485 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Grouped barplot in R with error bars up vote 4 down vote favorite 1 Dear Stackoverflow users, I would like to draw a grouped barplot with error bars. Here is the kind of figure I have http://stackoverflow.com/questions/29768219/grouped-barplot-in-r-with-error-bars been able to get up to now, and this is ok for what I need: And here is my script: #create dataframe Gene<-c("Gene1","Gene2","Gene1","Gene2") count1<-c(12,14,16,34) count2<-c(4,7,9,23) count3<-c(36,22,54,12) count4<-c(12,24,35,23) Species<-c("A","A","B","B") df<-data.frame(Gene,count1,count2,count3,count4,Species) df mean1<-mean(as.numeric(df[1,][c(2,3,4,5)])) mean2<-mean(as.numeric(df[2,][c(2,3,4,5)])) mean3<-mean(as.numeric(df[3,][c(2,3,4,5)])) mean4<-mean(as.numeric(df[4,][c(2,3,4,5)])) Gene1SpeciesA.stdev<-sd(as.numeric(df[1,][c(2,3,4,5)])) Gene2SpeciesA.stdev<-sd(as.numeric(df[2,][c(2,3,4,5)])) Gene1SpeciesB.stdev<-sd(as.numeric(df[3,][c(2,3,4,5)])) Gene2SpeciesB.stdev<-sd(as.numeric(df[4,][c(2,3,4,5)])) ToPlot<-c(mean1,mean2,mean3,mean4) #plot barplot plot<-matrix(ToPlot,2,2,byrow=TRUE) #with 2 being replaced by the number of genes! tplot<-t(plot) BarPlot <- barplot(tplot, beside=TRUE,ylab="count", names.arg=c("Gene1","Gene2"),col=c("blue","red")) #add legend legend("topright", legend = c("SpeciesA","SpeciesB"), fill = c("blue","red")) #add error bars ee<-matrix(c(Gene1SpeciesA.stdev,Gene2SpeciesA.stdev,Gene1SpeciesB.stdev,Gene2SpeciesB.stdev),2,2,byrow=TRUE)*1.96/sqrt(4) tee<-t(ee) error.bar(BarPlot,tplot,tee) The problem is that I need to do this for 50 genes, and 4 species, so my script is gonna get super super long and I guess this is not optimized... I tried to find help here but I can't figure out a better way to do what I'd like. If I did not need error bars I could adapt this script but the tricky part is to mix ggplot beautiful barplots and error bars! ;) If you have any idea to optimize my script, I would really appr
a barplot with SEM error bars Aubrie Holman SubscribeSubscribedUnsubscribe Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a playlist. Sign in Share More Report Need to report the https://www.youtube.com/watch?v=4Y3ZjFRwMX0 video? Sign in to report inappropriate content. Sign in Transcript Statistics 2,193 views http://blog.revolutionanalytics.com/2009/09/making-barplots-with-error-bars-in-r.html 5 Like this video? Sign in to make your opinion count. Sign in 6 1 Don't like this video? Sign in to make your opinion count. Sign in 2 Loading... Loading... Transcript The interactive transcript could not be loaded. Loading... Loading... Rating is available when the video has been rented. This feature is not available error bars right now. Please try again later. Published on Oct 30, 2015 Category Education License Standard YouTube License Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Learn R - Bar Charts with Error Bars in Ggplot2 - Duration: 27:28. Erin Buchanan 3,162 views 27:28 R Statistics tutorial: Creating bar charts for categorical variables | lynda.com - Duration: 9:06. Lynda.com 1,906 views 9:06 Learn error bars to R - Line Graphs with Error Bars in Ggplot2 - Duration: 34:05. Erin Buchanan 1,386 views 34:05 Creating a Basic Bar Plot in R (Data Science & Statistics) - Duration: 24:34. Tim Layton 965 views 24:34 Plotting in R tutorial: Gorgeous graphs with ggplot2 - Duration: 32:05. deltaDNA 24,170 views 32:05 Creating Barplots in RStudio - Duration: 4:38. UTSSC 10,610 views 4:38 R Tutorial - Customizing Your Plots In R - Duration: 4:30. DataCamp 984 views 4:30 Excel Graphs With Error Bars Tutorial By Nestor Matthews - Duration: 14:12. Nestor Matthews 12,819 views 14:12 R tutorial: Creating bar charts for categorical variables | lynda.com - Duration: 13:21. Lynda.com 9,849 views 13:21 Constructing and plotting confidence intervals for means in R - Duration: 8:32. iquit-vids 4,935 views 8:32 Graphs and Error bars with Numbers - Duration: 7:07. Amanda M. Noller 9,346 views 7:07 Types of error-bars for mean: SD SE CI - Duration: 9:29. Ayumi Shintani 2,208 views 9:29 Standard Deviation using R Programming - Statistics Tutorial - Duration: 3:39. Edward Kench 11,243 views 3:39 Descriptive Statistics in R: Mean, Standard Deviation, Frequencies, etc (R Tutorial 2.7) - Duration: 6:50. MarinStatsLectures 71,155 views 6:50 SPSS for newbies: How to create an error bar chart - Du
11, 2009 Making barplots with error bars in R When presenting summarized data -- the data in the cells of a two-way ANOVA, for example -- it's always a good idea to visualize the uncertainty in the summaries. The natural way for statisticians is to use a boxplot, and ggplot2 makes that easy: qplot(class, hwy, fill=factor(year), data=mpg, geom="boxplot", position="dodge")+theme_bw() But Jarrett Byrnes, a marine community biologist, wanted to use a barplot, instead. (A boxplot shows more details of the distribution, but more people know how to read a barplot.) As he shows, it is possible, with a little extra work, add error bars to a barplot with ggplot2: See the link below for the code: a great demonstration of the customization capabilities of ggplot2. i’m a chordata! urochordata!: Let’s All Go Down to the Barplot! (Update Jan 2 2013: link to http://www.imachordata.com/?p=199 removed -- site compromised) Posted by David Smith at 07:11 in graphics, R | Permalink Comments You can follow this conversation by subscribing to the comment feed for this post. The comments to this entry are closed. Information About this blog Comments Policy About Categories About the Authors R Community Calendar Local R User Group Directory Search Revolutions Blog Got comments or suggestions for the blog editor? Email David Smith. Follow David on Twitter: @revodavid +David Smith Get this blog via email with Categories academia advanced tips announcements applications beginner tips big data courses current events data science developer tips events finance government graphics high-performance computing life sciences Microsoft open source other industry packages popularity predictive analytics profiles python R R is Hot random reviews Revolution Rmedia roundups sports statistics user groups See More R links Find R packagesCRAN package directory at MRAN Download Microsoft R OpenFree, high-performance R R Project siteInformation about the R project Recommended Sites FlowingDataModern data visualization One R Tip A DayCode examples for graphics and analysis Probability and statistics blogMonte Carlo simulations in R R BloggersDaily news and tutorials about R, contributed by R bloggers worldwide. R Project group on analyticbridge.comCommunity and discussion forum Statistical Modeling, Causal Inference, and Social ScienceAndrew Gelman's statistics blog Ar