Ggplot2 Barplot With Error Bars
error bars Two within-subjects variables Note about normed means Helper functions Problem
R Calculate Standard Error
You want to plot means and error bars for ggplot2 stat_summary a dataset. Solution To make graphs with ggplot2, the data must be in summaryse a data frame, and in “long” (as opposed to wide) format. If your data needs to be restructured, see this page for more
Geom_errorbar Linetype
information. Sample data The examples below will the ToothGrowth dataset. Note that dose is a numeric column here; in some situations it may be useful to convert it to a factor. tg <- ToothGrowth head(tg) class="w"> tutorials cover different topics including statistics, data manipulation and visualization! Introduction Getting Data Data Management Visualizing Data Basic Statistics Regression Models Advanced Modeling Programming Best R Packages Tips error bars in r & Tricks Visualizing Data Building Barplots with Error Bars by Chris Wetherill on August 17, 2015 3 Comments Ggplot Confidence Interval
Barplot With Error Bars R
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the http://stackoverflow.com/questions/19079064/placement-of-error-bars-in-barplot-using-ggplot2 workings and policies of this site About Us Learn more about Stack http://stats.stackexchange.com/questions/14147/calculating-standard-error-and-attaching-an-error-bar-on-ggplot2-bar-chart Overflow the company Business Learn more about hiring developers or 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 4.7 million programmers, just like you, helping each other. Join them; error bars it only takes a minute: Sign up Placement of error bars in barplot using ggplot2 up vote 6 down vote favorite 1 Hi i am using ggplot version 0.9.3.2 in RStudio and I am trying to make a bar plot with error bars. The problem is that the error bars are positioned wrong. I need them to go on barplot with error top of the individual bars. I have a data frame like this concentration variable value sd 1 0 AF_B 0.3567126 0.010391001 2 0.5x AF_B 0.3355766 0.003480245 3 1x AF_B 0.3001138 0.009104821 4 5x AF_B 0.2658911 0.016312390 5 10x AF_B 0.2115522 0.011056590 6 100x AF_B 0.2655958 0.015092367 7 0 D_B 0.3567126 0.010391001 8 0.5x D_B 0.3453078 0.011639252 9 1x D_B 0.3380180 0.004357810 10 5x D_B 0.3349004 0.018119644 11 10x D_B 0.3186451 0.014515436 12 100x D_B 0.3174700 0.016685932 I have the following code dodge = position_dodge(width=0.9) c = ggplot(data=dm, aes(y=value,x=concentration)) c + geom_bar(position = dodge, stat="identity", aes(fill=variable,colour=variable,group=variable, colour="black")) + geom_errorbar(aes(ymin=value-sd,ymax=value+sd), position=dodge, width=0.1, size=0.3) + ylab("mu_max [h-1]") + scale_x_discrete(limits=c("0","0.5x","1x","5x","10x","100x")) , and gives me this plot, which is clearly http://i.imgur.com/1zwbxMv.png r ggplot2 share|improve this question asked Sep 29 '13 at 14:16 jensjorda 6818 add a comment| 1 Answer 1 active oldest votes up vote 8 down vote accepted You should move the argument fill=variable inside the ggplot() call to ensure that geom_errorbar() also use variable as the dodging variable. ggplot(data=dm,aes(y=value,x=concentration,fill=variable))+ geom_bar(position = position_dodge(), stat="identity") + geom_errorbar(aes(ymin=value-sd,ymax=value+sd), position=dodge,width=0.1,size=0.3)+ ylab("mu_max [h-1]") + scale_x_discrete(limit
Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Cross Validated Questions Tags Users Badges Unanswered Ask Question _ Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Calculating standard error and attaching an error bar on ggplot2 bar chart up vote 4 down vote favorite 1 Given a minimal dataset where am looking for the occurrence of a certain motif within a dataset of 500 observations. with_motif represents obervations with the specified motif and without_motif are observations without the motif. with_motif <- 100 without_motif <- 400 dt <- data.frame(with_motif,without_motif) The following code will plot a bar-chart using ggplot2 library, bar_plot <- ggplot(melt(dt),aes(variable,value)) + geom_bar() + scale_x_discrete(name="with or without") + theme_bw() + opts( panel.grid.major = theme_blank(),title = "", plot.title=theme_text(size=14)) bar_plot I would like to compute a standard error at 95% CI and attach a barchart to the plot. ggplot offers geom_errorbar() but I would be glad to know different ways for deriving the standard errors(deviation) so as to calculate the errorbar limits(CI). r ggplot2 barplot share|improve this question edited Aug 11 '11 at 12:15 mbq 17.8k849103 asked Aug 11 '11 at 10:34 eastafri 2481714 +1, but kindly avoid "plot" as an object name! –Ari B. Friedman Aug 11 '11 at 10:36 yep! edited and nice advice! –eastafri Aug 11 '11 at 10:38 1 @Biorelated There's a very good online help for ggplot2, e.g. had.co.nz/ggplot2/geom_errorbar.html. I also provided some example of use of geom_errorbar() in this response. Is this what you're after? –chl♦ Aug 11 '11 at 10:50 1 @Biorelated As can be seen in my response, you'll need to compute SD or SE or 95% CI yourself, and add them to your data frame (or use another one), then call geom_errorbar(). If your question is about how to compute those estimates, then you may consider updating your question and provide more informati