Dataset and scripts for the manuscript: "Individual, but not population asymmetries, are modulated by social environment and genotype in Drosophila melanogaster". We upload: 1.Data. This directory contains the raw tracking data used for the analysis and the calibration files required by Flytracker for each strain of the Drosophila Genetic Reference Panel (RAL-69, RAL-136, RAL-338, RAL-535, RAL-796). The format of the dataset consists in the output of tracking the (x,y) position and related features (e.g. velocity, distance) of flies in a circular arena using the software Flytracker - http://www.vision.caltech.edu/Tools/FlyTracker/ - For each video we have a trak.mat file and a feat.mat file. For instance, for a video in which we tracked the DGRP line RAL-136 (d338), with a pair of males (mm), trial 3 (t5) we had as outputs d338mmt5joined-feat.mat and d338mmt5joined-track.mat . You can find the description of the output here: http://www.vision.caltech.edu/Tools/FlyTracker/documentation.html 2.Load_data _and_circling_scripts. This directory contains a MATLAB file with the instructions on how to load datasets and how to compute the circling index. 3.Heatmap. This directory contains the instructions (readme_heatmap.txt) and scripts to (a) fix a bug in the feat files ouput by Flytracker using the calibration files and the script feat_compute_revised.m (b) plot the heatmap of the position and distance between partner flies in a dyad.