bioCEED R coding club
While there are Korona-related restrictions on teaching on Campus, Rklubben will be on Zoom on Fridays from 14:00 to 16:00. Please email me (richard.telford@uib.no) for the link. Read about RKlubben on Zoom in the BioCEED newsletter.
Over the last year or so, I have changed from using base R graphics for all my plots to using ggplot2 for almost everything. I want to show you why. I’m going to use the iris dataset with is available Continue reading Why use ggplot2?
For most analyses, a large proportion of the code is used to import, reformat and clean the data, and only a small portion is used to run the statistical tests. Despite this, university courses tend to focus on statistical analyses Continue reading Introducing dplyr for data manipulation in R
When data are imported into R it generally arrives as a data.frame, a type of object that contains named columns. We often want to access the contents of each column which can be done with the dollar or square-bracket notation. Continue reading Don’t get attached to attach()
Importing data is one of those things that is often much more effort that it should be. It is often convenient to enter data into excel, but this then needs to be imported into R. There are several ways to Continue reading Importing excel data into R
In R code, it is legal to use T and F to mean TRUE and FALSE respectively. However, TRUE and FALSE are reserved words – they can only be used to mean TRUE or FALSE. Code like will return a Continue reading Avoid using T to mean TRUE
expression() and related functions including bquote() are powerful tools for annotating figures with mathematical notation in R. This functionality is not obvious from their respective help files. demo(plotmath) nicely shows the huge potential of expression(), but does not help that Continue reading Expressions in R
To show formatted code within a paragraph, for example a function name, use <code>plot</code> which will appear as plot. To show a block of code, use something like this but using square brackets [] rather than braces {}. {code language=”r”} x<-rnorm(100) Continue reading Formatting R code in WordPress