Publications by Paolo
Interesting tip about multicolor title of a plot
I’d like to suggest to take a look at this interesting post about creating a title with multi-coloured words. Related To leave a comment for the author, please follow the link and comment on their blog: One R Tip A Day. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. ...
519 sym 4 img
Dealing with missing values
Two new quick tips from ‘almost regular’ contributor Jason: Handling missing values in R can be tricky. Let’s say you have a table with missing values you’d like to read from disk. Reading in the table with, read.table( fileName ) might fail. If your table is properly formatted, then R can determine what’s a missing va...
1515 sym 4 img
no “Infinities”
Thanks to Pierre-Yves for the below useful tip!if you have a dataset from which you want the max or min but they have to be real number and not “Inf” or “-Inf” there is a way to do it:data <- c(-Inf, 1,2,3,4,5,6,7,8,9,10, Inf) max(data) # Return Inf min(data) # Return -Inf # To solve the problem I went to: range(data, finite...
843 sym 4 img
Alternative implementations using ggplot2
Here and here, you can find alternative implementations of two plots (1, 2) I created time ago using R basic graphic. The author recreates the plots taking advantage of the excellent ggplot2 package. Related To leave a comment for the author, please follow the link and comment on their blog: One R Tip A Day. R-bloggers.com offers daily e-ma...
598 sym 4 img
Multiple plot in a single image using ImageMagick
Sometimes you need to add several plots/images either by row or by column to a single page/sheet.If you generate all your plot with R base graphics you can easily accomplished the task using the par() function, e.g., using par(mfrow=c(2,2)) and then drawing 4 plots of your choice.However, if you need to create a single image build up ...
1962 sym 4 img
R 2.9.0 is Out!
The new R 2.9.0 is out! Get it here. If you like take a look at these posts for some miscellaneous advices to make the upgrade easier. Related To leave a comment for the author, please follow the link and comment on their blog: One R Tip A Day. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R ...
544 sym 4 img
Colors in the R terminal
Today, I’d like to suggest a new R package that you can download from here. Still in its early development, the xterm256 package allows to print text in the R terminal using different colours. You can find more information here. The picture below depicts a basic example of its use. Related To leave a comment for the author, please...
693 sym 6 img
Tips from the R-help list : shadow text in a plot and bumps charts
Stumbling across the R-help mailing-list I found, as often happens, two threads in the spirit of this blog (of course, since they come from the list, the quality is higher): here you can find a function allowing a shadow outline style for a text in a plot. From here you can follow an interesting thread depicting how to produce bum...
759 sym 4 img
screen in ubuntu 9.04
As I told in a previous post, I consider the unix tool screen essential for my work. It seems that the just released Ubuntu 9.04 contains a package that make it easier to configure and use. You can find the full story here. Related To leave a comment for the author, please follow the link and comment on their blog: One R Tip A Da...
634 sym 4 img
Searching through mailing list archives
Romain Francois on his blog posted a very useful function to search through the R mailing list archives. Take a look at it here. Take also a look at the tm package introduced in R News, 8(2):19–22, Oct. 2008 with an example dealing with analysis of the R-help mailing list. Related To leave a comment for the author, please follow...
684 sym 4 img