from pylab import * size = 256,16 dpi = 72.0 figsize= size[0]/float(dpi),size[1]/float(dpi) fig = figure(figsize=figsize, dpi=dpi) fig.patch.set_alpha(0) axes([0,.1,1,.8], frameon=False) for i in range(1,11): plot( [i,i], [0,1], color='b', lw=i/2. ) xlim(0,11),ylim(0,1) xticks([]),yticks([]) savefig('../figures/linewidth.png', dpi=dpi)