Hi When you run it through the GUI it also runs find_the_biggest for you so that file is the output of find_the_biggest. Cheers Saada On 7 Feb 2019, at 21:00, Sims, Sara A <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hello! What is the “biggest.nii” file contain? It was output from probtrackx when I ran it with classification targets. Is that what you put into the find_the_biggest command? Thanks, Sara Sims ________________________________ To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1 ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1