s2let_elmin

 s2let_elmin
 Return the lowest harmonic index el supported by the given
 wavelet scale.

 Default usage:
        elmin = s2let_elmin(B, j)

   B is the wavelet parameter,
   j the scale of interest.

 S2LET package to perform Wavelets transform on the Sphere.
 Copyright (C) 2012-2015  Boris Leistedt & Jason McEwen
 See LICENSE.txt for license details

0001 function elmin = s2let_elmin(B, j)
0002 
0003 % s2let_elmin
0004 % Return the lowest harmonic index el supported by the given
0005 % wavelet scale.
0006 %
0007 % Default usage:
0008 %        elmin = s2let_elmin(B, j)
0009 %
0010 %   B is the wavelet parameter,
0011 %   j the scale of interest.
0012 %
0013 % S2LET package to perform Wavelets transform on the Sphere.
0014 % Copyright (C) 2012-2015  Boris Leistedt & Jason McEwen
0015 % See LICENSE.txt for license details
0016 
0017 elmin = floor(B^(j-1) + 1);
0018 
0019 end