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Here you will find a collection of scripts and code snippets used in R, Python and other programming languages.

R scripts


Comet assay

Some helpful commands to read in all comet assay files simultaneously. The protected .xls files need to be converted to .csv files, e.g. using LibreOffice[1].

  • In R, navigate to the folder containing your .csv files using the setwd() command.
  • Read in the tail intensity of the .csv files using the following command: <- data.frame(sapply(list.files(pattern = "*.csv"), FUN = function(x) { read.csv(x, sep = ";", dec = ",")$Tail.Intensity })), but keep in mind that you may have to adjust the separator and decimal characters.
  • Convert the data to a column-based data frame using the median values of the 50 comets scored per sample: data <- data.frame(Tail.Intensity = stack(sapply(, FUN = "median"))[ , 1]).
  • Remember to add the necessary columns, describing e.g. concentration, locations, or treatments before further analysis.


Linear filming robot. This script allows to film up to 10 bottles. It will move from bottle to bottle and film each of the bottles for a specified number of seconds (HERE variable name).