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([0,0,1,1], frameon=False) for i in range(1,11): plot([i,],[1,],'s', markersize=5, markeredgewidth=1+i/10., markeredgecolor='k', markerfacecolor='w') xlim(0,11) xticks([]),yticks([]) savefig('../figures/mew.png', dpi=dpi)