similar to: Make barplot with error bars, anova out of a table

Here's my little discussion example for a quadratic regression: http://pj.freefaculty.org/R/WorkingExamples/regression-quadratic-1.R Students press me to know the benefits of poly() over the more obvious regression formulas. I think I understand the theory on why poly() should be more numerically stable, but I'm having trouble writing down an example that proves the benefit of this. I

I am new to R. I want to graph group data using a "Traditional Bar Chart with Standard Error Bar", like the kind shown here: http://samiam.colorado.edu/~mcclella/ftep/twoGroups/twoGroupGraphs.html Is there a simple way to do this? So far, I have only figured out how to plot the bars using barplot. testdata <- scan(, list(group=0,xbar=0,se=0)) 400 0.36038 0.02154 200 0.35927

Dear all, I'm new to matrix operations in R. I couln't find a solution to the following problem among earlier help mails or in An introd to R, I guess because the question is really basic. I want to extract all above the diagonal, i.e. from 1 2 3 4 1 0 26 49 49 2 26 0 44 40 3 49 44 0 21 4 49 40 21 0 I want 26 49 44 49 40 21 Thanks in advance! Sincerely, Tord

Dear R-help list, I hope I did not miss something obvious, because my question seems very simple, but I couln't figure out how to do it. If I have the following data: Day<-c(1,2,3,4,5,6,7) V<-c(5,NA,10,30,45,NA,10) than the line in plot plot(V~Day, type="b") will start with the 3rd value and stop stop at the 5th value because all NA are omitted. Is there now a parameter

Hi all, I have a problem with a rather simple plot (which I have used several times) - barplot. I want to create a barplot, where no space is between the axis and the bars. Example: barplot(rnorm(10), space=0) creates a vertical axis at the left and bars. I want to skip the space between both. Thank you for your help. Daniel

Dear R list members, How to produce barplots anchored to the x-axis (not floating above the x-axis) with a box around? With both following codes, the lower horizontal line of the box is below the y = 0 line: # first code x <- c(1,2,3,4) barplot(x,yaxs='i') box() # second code x <- c(1,2,3,4) op <- par(yaxs='i') barplot(x) box() par(op) The parameter yaxs='i'

Hi, I couldn't find how to have the values written on the top of each bar in a barplot. When using hist(), it is possible to use labels=T, but this option does not seem to exist for barplot(). Is there a trick I could use to do that ? Thanks to all Luc

I'm trying to create a barplot that has two sets of data next to each other. I'm using barplot with the add=TRUE option, but this simply adds the second dataset on top of the first, obscuring it. How do I add the new data to the right on the existing barplot so that both sets are visible? I've been playing with all sorts of option and reading the list archives with no

On Fri, 16 Apr 2004 09:59:02 -0400 Duncan Murdoch wrote: > On Fri, 16 Apr 2004 15:44:52 +0200, Achim Zeileis > <Achim.Zeileis@wu-wien.ac.at> wrote : > > >On Fri, 16 Apr 2004 11:40:46 +0200 (CEST) phgrosjean@sciviews.org > >wrote: > > > >> Bars are not stacked, but superimposed. This happens even with the > >> first example of barplot: >

Hi, I need bars' values on barplot, and I don't know how I can put it. I do my barplot as: data<-read.table("/my_path/file.dat",header=T, sep="\t") barplot(as.matrix(data),log="y",beside=TRUE,main="my_title", xlab="x name", ylab="y name"). How can I add the values on each bar? Thanks.. [[alternative HTML version deleted]]

Hi Windows XP, R 2.0.1. I am drawing a very large barplot using jpeg() - setting the width to 10,000 as there are over 5000 bars. This all works fine and I get exactly what I want - except there is a huge bit of white space between the Y-axis and the first bar - so much in fact that I have to scroll two screens from the Y-axis before I see the first bar. After that the bars are evenly spaced

Hello, r-help at r-project.orgbarplot(twcons.area, beside=T, col=c("green4", "blue", "red3", "gray"), xlab="estate", ylab="number of persons", ylim=c(0, 110), legend.text=c("treated", "mix", "untreated", "NA")) produces a barplot very fine. In addition, I'd like to get the

Hi all, I am a relatively new R user... trying to put error bars (from SD values) on my data represented with barplot(). But I can't find any function or instruction to do so. Is there an easier way to do this than using segments() as I saw in an example in the R reference manual ? Then, can I define there graphical apparence ? Thanks for help. Regards Olivier BUHARD [[alternative HTML

On Fri, 16 Apr 2004 11:40:46 +0200 (CEST) phgrosjean@sciviews.org wrote: > Bars are not stacked, but superimposed. This happens even with the > first example of barplot: >=20 > tN <- table(Ni <- rpois(100, lambda=3D5)) > r <- barplot(tN, col=3D'gray') AFAICS, this problem occurs exactly for 1-way tables like above. If barplot(as.vector(tN), col =3D

Hi I am trying to understand the "space" argument to barplot() and I think it is not working as stated. The docs say: space: the amount of space (as a fraction of the average bar width) left before each bar. Which means that I can pass a vector, the same length as the no. of bars, and the nth element of that vector will be the space left before the nth bar. This is

Hello, I'm trying currently using barplot to summarize precipitation data. So far I've compiled total annual snow and rain accumulation in a table (attached). I've been successful at plotting it using the following code: fig=barplot(t(Annual_Precip_table), horiz=TRUE, space=0, col=c("grey70", "white"), axes=FALSE) . . The result is a stacked barplot with total

Dear R users, I want to make a barplot with bars that can be non-continuous. An example will be the presence and absence of some events over time, e.g. a bunch of people that are either in the office or not in the office, for some period of time. I want to visualize this in a bar plot like this: Person 1: ********* ******** ******* Person 2: ********* ***** **********

Hi, with the "space" parameter it is possible to change the gap / distance between the bars, but is it also possible to change the "space" after each 6th bar? So for example you have bars from 1 to 6 then a large gap and then the next six bars from 7 to 12 Thanks a lot! -- View this message in context:

I have a very standard barplot. My labels are too long to be printed horizontally under each bar, so I am using text to put the labels on a 45 degree slant. However, the labels are spaced more narrowly than the bars, so on an 8 vertical bar plot, the end of the eighth label is lined up with the seventh bar. Preferably I don't want to do every text label separately (I'm having this

hi, I have a barplot with six clusters of four bars each. Now I would like to add the exact value of each bar as a number above the bar. I hoped to get some tips here. I could simply add text at the different positions, but I don't understand how the margins on the x-axis are calculated (how can I get / calculate the x-ticks of a barplot?). Also I would like to code this flexible enough so