def build_axlabel(base, units):
	"""
	Generate axis label

	Auxilliary function to generate an axis label from the specified name and units:
	'Base [units]'

	Parameters
	___________
	base: str
		Axis name
	units: str
		Axis units

	Returns
	________
	label:
		Complete axis label
	"""
	label = base
	if units:
		label =  label + ' [' + units + ']'
	return label