from numpy import * from matplotlib.pyplot import * from mpl_toolkits.axes_grid.axislines import SubplotZero   e = lambda mu,s,x: exp( (mu-x)/s ) cdf = lambda mu,s,x: 1./ ( 1. + e(mu,s,x) )  fig = figure(figsize=(6,5)) ax = SubplotZero(fig,111) fig.add_subplot(ax)  ax.grid(True) ax.minorticks_on()   x = linspace(-5,20,100) mu = [5,9,9,6,2] s = [2,3,4,2,1] for b in arange(5): 	ax.plot(x,cdf(mu[b],s[b],x),lw=1.5,label=r'$\mu=%d,\, s=%d$'%(mu[b],s[b]))#'$c={}^1\!/_2$')  ax.set_ylim(0,1) ax.set_xlim(-5,20) ax.legend(loc='lower right',frameon=False)  fig.savefig("test.svg",bbox_inches="tight",pad_inches=.15)