Hi, The bar chart generator does not work for me. It looks like gnuplot is complaining (see below or attached screenshot), but I'm not sure if this is the problem. I'm on CentOS 5.3 and have gnuplot version 4.0.0-14.el5. In addition I installed gnuplot-py 1.8. How do I fix this? Cheers, Pi gnuplot> set style histogram clustered gap 5 title offset character 0, 0, 0 ^ line 0: expecting 'data', 'function', 'line', 'fill' or 'arrow' line 0: undefined variable: in line 0: undefined variable: invert gnuplot> set style data histograms ^ line 0: expecting 'lines', 'points', 'linespoints', 'dots', 'impulses', 'yerrorbars', 'xerrorbars', 'xyerrorbars', 'steps', 'fsteps', 'histeps', 'filledcurves', 'boxes', 'boxerrorbars', 'boxxyerrorbars', 'vectors', 'financebars', 'candlesticks', 'errorlines', 'xerrorlines', 'yerrorlines', 'xyerrorlines', 'pm3d' gnuplot: unable to open display 'localhost:13.0' gnuplot: X11 aborted. ------------------------------------------------------------- Biomolecular Mass Spectrometry and Proteomics Utrecht University Visiting address: H.R. Kruyt building room O607 Padualaan 8 3584 CH Utrecht The Netherlands Mail address: P.O. box 80.082 3508 TB Utrecht The Netherlands phone: +31 (0)6-143 66 783 email: pieter.neerincx@gmail.com skype: pieter.online ------------------------------------------------------------