Hello all, When reading data files using the read_data command in ifeffit is there a way to specify which columns of data will be read? I have very long data files and run into array size problems when I try and read the entire file. However, if I could read only columns 1, 2, and 3 rather than all 5 data columns I think my problem would be solved. I think narray may be the command to use, but I'm not sure how to implement it and couldn't find anything in the ifeffit manual. Thanks! Matt -- ******************************************* Matthew Ginder-Vogel Post Doctoral Researcher Center for Critical Zone Research Environmental Soil Chemistry University of Delaware http://ag.udel.edu/SoilChem/gindervogel.html (302) 831-0608 mattgv@udel.edu *******************************************