def plot_multiple_roc(rocList,title='',labels=None, include_baseline=False, equal_aspect=True):
	pylab.clf()
	pylab.ylim((0,1))
	pylab.xlim((0,1))
	pylab.xticks(pylab.arange(0,1.1,.1))
	pylab.yticks(pylab.arange(0,1.1,.1))
	pylab.grid(True)
	if equal_aspect:
		cax = pylab.gca()
		cax.set_aspect('equal')
	pylab.xlabel("1 - Specificity")
	pylab.ylabel("Sensitivity")
	pylab.title(title)
	if not labels:
		labels = [ '' for x in rocList]
	_remove_duplicate_styles(rocList)
	for ix, r in enumerate(rocList):
		pylab.plot([x[0] for x in r.derived_points], [y[1] for y in r.derived_points], r.linestyle, linewidth=1, label=labels[ix])
	if include_baseline:
		pylab.plot([0.0,1.0], [0.0, 1.0], 'k-', label= 'random')
	if labels:
		pylab.legend(loc='lower right')
		
	pylab.show()
Plots multiple ROC curves on the same chart. 
dataset/ETHPy150Open pivotalsoftware/pymadlib/pymadlib/pyroc.py/plot_multiple_roc