search for: zvrba

Given an arbitrary data frame, it is easy to exclude a column given its index: df[,-2]. How to do the same thing given the column name? A naive attempt df[,-"name"] did not work :)

Searching the mail archives I found that using legend.position as in p.ring.3 + opts(legend.position="top") is a known bug. I tried doing p.ring.3 + opts(legend.position=c(0.8, 0.2)) which works, but the legend background is transparent, i.e. I see the plot background through the legend. Adding additional option opts(legend.background=theme_rect(fill=TRUE,colour="white"))

Dear All, Perhaps, what I am asking is impossible, but I am asking it anyway. I have got several pdf files with rows of colored rectangles: red rectangles should be read as 0; green rectangles as 1. No other color exists. Is there some way to have R reading the colored rectangles to a matrix or data frame converting the color of the rectangles to sequences of 01? Thanks in advance, Paul

I have a large data-frame with measurements such as: id i v1 v2 v3 1 1 1.1 1.2 1.3 1 2 1.4 1.5 1.6 1 3 1.5 1.7 1.8 2 1 2.1 2.2 2.3 2 2 2.7 2.5 2.6 2 3 2.4 2.8 2.9 For each unique value of 'id' (which in the real data-set is a combination of three variables) I want to compute the median of v1 within each group ('i' distinguishes measurements within a group), and copy the

Hello, What would you recommend for producing publication-quality plots with R? Built-in graphics, trellis, ggplot2, or something else? Basic requirements: - I need to draw line-, box-, density-plots, bar-charts and histograms - error bars on bar- and box-plots - easy tiling of multiple plots on a single "page" Basic R plotting with mfrow and mfcol parameters is not satisfactory

I have a data-set that is structured as follows: sp wg n v.realtime v.cputime v.tcputime v.idletime v.nswtch 9 0 1 1 28.61300 28.61 28.6039 0.00000e+00 407 1563 0 1 2 15.20270 30.38 28.5981 9.80523e-01 483 3128 0 1 4 12.50930 50.00 28.6053 1.07877e+01 489 4682 0 1 6 12.10260 72.55

I have a following problem: The call qplot(wg, v.realtime, data=df.best.medians$gv1, colour=sp, geom="boxplot") works nice: for each value of the wg factor I get two box-plots (two levels in the sp factor) in different colours, side-by-side, centered at the wg x-axis. However, I want to separate the data belonging to different levels of the n factor, so I add the facets option:

...____________________________________________________________________________           Cricket on your mind? Visit the ultimate cricket website. Enter     [[alternative HTML version deleted]] ------------------------------ Message: 8 Date: Wed, 27 May 2009 12:37:51 +0200 From: Zeljko Vrba <zvrba@ifi.uio.no> Subject: [R] How to exclude a column by name? To: r-help@r-project.org Message-ID: <20090527103751.GB1197@anakin.ifi.uio.no> Content-Type: text/plain; charset=us-ascii Given an arbitrary data frame, it is easy to exclude a column given its index: df[,-2].  How to do the same t...

I have three plots and I want the *plot area* to be of the same width on each plot. Since the three plots have different legends, the text width of the legend affects the width of the plot area (longer legend text = narrower plot area). Exporting the three figures to postscript device of same size gives thus unequal plot areas. How can I calculate the correct width of postscript device for each

I use the following function to export some figures to .eps: p.eps <- function(p, fname, title = NULL, width, height) { postscript(file=fname, onefile=FALSE, paper="special", width=width, height=height, horizontal=FALSE) print(p + opts(title = title)) dev.off() } Whenever I have a page consisting of *only* figures exported in this way, Acrobat Reader shows them in