# about plotting a special case

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## about plotting a special case

 Hi R users, I have a question about plotting. There is the dataframe below, while each row represents a record. If I want to plot on a A-B plot, i.e., x-axis represents A, while y-axis represents B values. However, I want to plot the mean value from records 1-10 as one point, while the 10th and 90th percentiles represent the error bars, such as one point in the attached example. I don't know how to do this, and then add a legend. After the above step, if I have a dataframe DF2 with the same structure but different values than DF1, how to show the point on the same figure, but use different colors or symbols? Thanks for any advices. DF1         A  B  C 1     65 21 54 2     66 23 55 3     54 24 56 4     44 23 53 5     67 22 52 6     66 21 50 7     45 20 51 8     56 19 57 9     40 25 58 10   39 24 53 ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code. sample.pdf (9K) Download Attachment
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## Re: about plotting a special case

 Hi lily, Here is the first plot: plot(DF1\$A,DF1\$B,pch=19,col="red") meanA<-mean(DF1\$A) meanB<-mean(DF1\$B) points(meanA,meanB,pch=18,col="red") q1090<-quantile(DF1\$B,probs=c(0.1,0.9)) library(plotrix) dispersion(meanA,meanB,q1090[2],q1090[1],  intervals=FALSE,col="red") The same code will work for a second data frame, except that you would use "points" instead of "plot" and change the color. You may also have to specify xlim and ylim in the first call to "plot" so that all values are on the plot. Jim On Thu, Jul 13, 2017 at 11:46 AM, lily li <[hidden email]> wrote: > Hi R users, > > I have a question about plotting. There is the dataframe below, while each > row represents a record. If I want to plot on a A-B plot, i.e., x-axis > represents A, while y-axis represents B values. However, I want to plot the > mean value from records 1-10 as one point, while the 10th and 90th > percentiles represent the error bars, such as one point in the attached > example. I don't know how to do this, and then add a legend. > After the above step, if I have a dataframe DF2 with the same structure but > different values than DF1, how to show the point on the same figure, but > use different colors or symbols? Thanks for any advices. > > DF1 > >         A  B  C > 1     65 21 54 > 2     66 23 55 > 3     54 24 56 > 4     44 23 53 > 5     67 22 52 > 6     66 21 50 > 7     45 20 51 > 8     56 19 57 > 9     40 25 58 > 10   39 24 53 > > ______________________________________________ > [hidden email] mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: about plotting a special case

 Thanks, Jim. The code works, but I don't understand why you use q1090 <- quantile(DF1\$B, probs=c()), rather than DF1\$A? Also, how to add a legend for both points DF1 and DF2? On Wed, Jul 12, 2017 at 8:25 PM, Jim Lemon <[hidden email]> wrote: > Hi lily, > Here is the first plot: > > plot(DF1\$A,DF1\$B,pch=19,col="red") > meanA<-mean(DF1\$A) > meanB<-mean(DF1\$B) > points(meanA,meanB,pch=18,col="red") > q1090<-quantile(DF1\$B,probs=c(0.1,0.9)) > library(plotrix) > dispersion(meanA,meanB,q1090[2],q1090[1], >  intervals=FALSE,col="red") > > The same code will work for a second data frame, except that you would > use "points" instead of "plot" and change the color. You may also have > to specify xlim and ylim in the first call to "plot" so that all > values are on the plot. > > Jim > > > > On Thu, Jul 13, 2017 at 11:46 AM, lily li <[hidden email]> wrote: > > Hi R users, > > > > I have a question about plotting. There is the dataframe below, while > each > > row represents a record. If I want to plot on a A-B plot, i.e., x-axis > > represents A, while y-axis represents B values. However, I want to plot > the > > mean value from records 1-10 as one point, while the 10th and 90th > > percentiles represent the error bars, such as one point in the attached > > example. I don't know how to do this, and then add a legend. > > After the above step, if I have a dataframe DF2 with the same structure > but > > different values than DF1, how to show the point on the same figure, but > > use different colors or symbols? Thanks for any advices. > > > > DF1 > > > >         A  B  C > > 1     65 21 54 > > 2     66 23 55 > > 3     54 24 56 > > 4     44 23 53 > > 5     67 22 52 > > 6     66 21 50 > > 7     45 20 51 > > 8     56 19 57 > > 9     40 25 58 > > 10   39 24 53 > > > > ______________________________________________ > > [hidden email] mailing list -- To UNSUBSCRIBE and more, see > > 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]] ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: about plotting a special case

 values A and B have different ranges. Therefore you would want horizontal error bars for the B mean. The dispersion function doesn't do horizontal error bars, so you can use plotCI also in plotrix. Here is an example with two databases: DF2<-read.table(text="A  B  C      62 22 54      69 24 55      51 28 56      47 25 53      70 21 52      61 23 50      40 19 51      58 18 57      38 24 58      37 27 53",header=TRUE) plot(DF1\$A,DF1\$B,xlim=range(c(DF1\$A,DF2\$A)),  ylim=range(c(DF1\$B,DF2\$B)),pch=19,col="red") meanA<-mean(DF1\$A) meanB<-mean(DF1\$B) points(meanA,meanB,pch=18,col="red") q1090<-quantile(DF1\$B,probs=c(0.1,0.9)) plotCI(meanA,meanB,ui=q1090[2],li=q1090[1],err="x",   add=TRUE,col="red") points(DF2\$A,DF2\$B,pch=19,col="green") meanA<-mean(DF2\$A) meanB<-mean(DF2\$B) points(meanA,meanB,pch=18,col="green") q1090<-quantile(DF2\$B,probs=c(0.1,0.9)) plotCI(meanA,meanB,ui=q1090[2],li=q1090[1],err="x",  add=TRUE,col="red") # click at the upper left corner of the legend legend(locator(1),legend=c("DF1","DF2"),pch=19,  col=c("red","green")) Jim On Thu, Jul 13, 2017 at 1:32 PM, lily li <[hidden email]> wrote: > Thanks, Jim. The code works, but I don't understand why you use q1090 <- > quantile(DF1\$B, probs=c()), rather than DF1\$A? Also, how to add a legend for > both points DF1 and DF2? > > On Wed, Jul 12, 2017 at 8:25 PM, Jim Lemon <[hidden email]> wrote: >> >> Hi lily, >> Here is the first plot: >> >> plot(DF1\$A,DF1\$B,pch=19,col="red") >> meanA<-mean(DF1\$A) >> meanB<-mean(DF1\$B) >> points(meanA,meanB,pch=18,col="red") >> q1090<-quantile(DF1\$B,probs=c(0.1,0.9)) >> library(plotrix) >> dispersion(meanA,meanB,q1090[2],q1090[1], >>  intervals=FALSE,col="red") >> >> The same code will work for a second data frame, except that you would >> use "points" instead of "plot" and change the color. You may also have >> to specify xlim and ylim in the first call to "plot" so that all >> values are on the plot. >> >> Jim >> >> >> >> On Thu, Jul 13, 2017 at 11:46 AM, lily li <[hidden email]> wrote: >> > Hi R users, >> > >> > I have a question about plotting. There is the dataframe below, while >> > each >> > row represents a record. If I want to plot on a A-B plot, i.e., x-axis >> > represents A, while y-axis represents B values. However, I want to plot >> > the >> > mean value from records 1-10 as one point, while the 10th and 90th >> > percentiles represent the error bars, such as one point in the attached >> > example. I don't know how to do this, and then add a legend. >> > After the above step, if I have a dataframe DF2 with the same structure >> > but >> > different values than DF1, how to show the point on the same figure, but >> > use different colors or symbols? Thanks for any advices. >> > >> > DF1 >> > >> >         A  B  C >> > 1     65 21 54 >> > 2     66 23 55 >> > 3     54 24 56 >> > 4     44 23 53 >> > 5     67 22 52 >> > 6     66 21 50 >> > 7     45 20 51 >> > 8     56 19 57 >> > 9     40 25 58 >> > 10   39 24 53 >> > >> > ______________________________________________ >> > [hidden email] mailing list -- To UNSUBSCRIBE and more, see >> > 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. > > ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.