I need to modify the lm (or eventually loess) function so I can use it in ggplot2's geom_smooth (or stat_smooth). For example, this is how stat_smooth is used normally: > qplot(data=diamonds, carat, price, facets=~clarity) + stat_smooth(method='lm')` I would like to define a custom 'lm2' function to use as value for the 'method' para...
I have a scatter plot in R (with ggplot2). The data has a numeric column (let's call it "bin") which can contain various integer values or null. I would like to colour the points with non-null bin values differently from the others. I do not want to one colour per value of bin, that would be too noisy. Just simply, say, red for those wi...
I have a large chart with many data points. When I create the qplot in R, the chart is auto-fitted to the window. Even if I maximize the window, the chart is still too small and details are lost. I would like to save it as a large PNG and then look at certain areas at 1:1 resolution with an image viewer (as I cannot zoom in easily in R)....
Hi, I have an R function which produces 95% confidence ellipses for scatterplots. The output looks like this, having a default of 50 points for each ellipse (50 rows): [,1] [,2] [1,] 0.097733810 0.044957994 [2,] 0.084433494 0.050337990 [3,] 0.069746783 0.054891438 I would like to superimpose a number of suc...
I'm trying to override the text in some ggplot strips to incorporate Greek characters. Here's some sample data, and the base for the plot. dfr <- data.frame( x = rep(1:10, times = 6), y = runif(60), fx = rep(c("foo", "bar"), each = 30), fy = rep(c("alpha", "beta", "gamma"), each = 10, times = 2) ) p <- ggplot(dfr, aes(x, y...
I am working with a data frame where one of the columns consists of POSIXct date-time values. I am trying to plot a histogram of these timestamps using ggplot2 but I'm having two issues: I don't know how to set the binwidth in geom_histogram(). I'd like to set each bin to a day or a week. I've tried providing a difftime object, but ...
Using ggplot I normally use geom_text and something like position=jitter to annotate my plots. However - for a nice plot I often finds it worthwhile to annotate manually. like below: data2 <- structure(list(type = structure(c(5L, 1L, 2L, 4L, 3L, 5L, 1L, 2L, 4L, 3L, 5L, 1L, 2L, 4L, 3L, 5L, 1L, 2L, 4L, 3L), .Label = c("EDS", "KIU", "LA...
JD Long helped me with this: question about manual annotation. But is it possible to do something similar on a facetted plot, such that the label style corresponds to the linestyle (aestetics) and in a way that I can annotate different facets individually? Some data funny <- structure(list(Institution = structure(c(1L, 1L, 1L, 1L, 2L, ...
From the online bar chart guide: qplot(factor(cyl), data=mtcars, geom="bar", fill=factor(gear)) How do I get 5 to sit on the bottom, 4 above that, and 3 on top? ...
I have a couple of questions regarding facetting in ggplot2... Let's say I have a query that returns data that looks like this: (note that it's ordered by Rank asc, Alarm asc and two Alarms have a Rank of 3 because their Totals = 1798 for Week 4, and Rank is set according to Total for Week 4) Rank Week Alarm To...
I am starting to use ggplot2. I have some small n (about 30 or so) granular data with lots of overlap. Neither jitter nor alpha (transparency) are suitable. Instead a stripchart with stack and offset do it best but I do not know how to do it in ggplot2. Do you know? To see what the end result should be click on this graphic. Here is th...
I am looking for the way to annotate axis in ggplot2. The example of the problem can be found here: http://learnr.wordpress.com/2009/09/24/ggplot2-back-to-back-bar-charts. The y axis of the chart (example graph in the link) has an annotation: (million euro). Is there a way to create such types of annotations in ggplot2? Looking at the ...
I need to show the values on the horizontal axis (aka abscissa, aka x-axis) converted into other units. Hence the need for a second axis. ...
Background Right now, I'm creating a multiple-predictor linear model and generating diagnostic plots to assess regression assumptions. (It's for a multiple regression analysis stats class that I'm loving at the moment :-) My textbook (Cohen, Cohen, West, and Aiken 2003) recommends plotting each predictor against the residuals to make s...
I have the following simple data data <- structure(list(status = c(9, 5, 9, 10, 11, 10, 8, 6, 6, 7, 10, 10, 7, 11, 11, 7, NA, 9, 11, 9, 10, 8, 9, 10, 7, 11, 9, 10, 9, 9, 8, 9, 11, 9, 11, 7, 8, 6, 11, 10, 9, 11, 11, 10, 11, 10, 9, 11, 7, 8, 8, 9, 4, 11, 11, 8, 7, 7, 11, 11, 11, 6, 7, 11, 6, 10, 10, 9, 10, 10, 8, 8, 10, 4, 8, 5, 8, 7)...
I'd like to spawn several graphics windows from within a function in R using ggplot graphics... testf <- function(a, b) { devAskNewPage(TRUE) qplot(a, b); # grid.newpage(recording = TRUE) dev.new() qplot(a, a+a); # grid.newpage(recording = TRUE) dev.new() qplot(b, b+b); } library(ggplot2) x <- rnorm(50) y <- rnorm(50) ...
I'm trying to display frequencies within barplot ... well, I want them somewhere in the graph: under the bars, within bars, above bars or in the legend area. And I recall (I may be wrong) that it can be done in ggplot2. This is probably an easy one... at least it seems easy. Here's the code: p <- ggplot(mtcars) p + aes(factor(cyl)) + ge...
I need to summarize a data frame by some variables, ignoring the others. This is sometimes referred to as collapsing. E.g. if I have a dataframe like this: Widget Type Energy egg 1 20 egg 2 30 jap 3 50 jap 1 60 Then collapsing by Widget, with Energy the dependent variable, Energy~Widget, would yield Widget Energy ...
This is strange - I think? library(ggplot2) tf <- which(sapply(diamonds, is.factor)) diamonds.tf <- diamonds[,tf] So far so good. But next comes the trouble: pl.f <- ggplot(diamonds.tf, aes(x=diamonds.tf[,i]))+ geom_bar()+ xlab(names(diamonds.tf[i])) for (i in 1:ncol(diamonds.tf)) { ggsave(paste("plot.f",i,".png",sep=""), plot=pl.f,...
I often have to make stacked barplots to compare variables, and because I do all my stats in R, I prefer to do all my graphics in R with ggplot2. I would like to learn how to do two things: First, I would like to be able to add proper percentage tick marks for each variable rather than tick marks by count. Counts would be confusing, whi...