Slicing index not guaranteed to be an integer

[jkrasting]

MIDAS/midas/rectgrid_gen.py

Lines 639 to 640 in 9232eda

	jmin=jmin+numpy.mod(jmin,2)
	return r_out[jmin:,:], phi_out[jmin:,:]

In the code above, slicing is performed based on jmin but it's value is not guaranteed to be an integer.