ST_phi2d

 Convert sediment grain size from phi to d (m)

 function [d] = ST_phi2d(phi)

 DESCRIPTION:
    Convert a sediment grain size from phi to d (m)

 INPUT:
    phi: sediment grain size in phi scale

 OUTPUT:
    d: sediment grain size in m

 EXAMPLE USAGE
    d = ST_phi2d(2.5)

 Author(s):  
    Geoff Cowles (University of Massachusetts Dartmouth)

 Revision history
   
==============================================================================

0001 function d = ST_phi2d(phi)
0002 % Convert sediment grain size from phi to d (m)
0003 %
0004 % function [d] = ST_phi2d(phi)
0005 %
0006 % DESCRIPTION:
0007 %    Convert a sediment grain size from phi to d (m)
0008 %
0009 % INPUT:
0010 %    phi: sediment grain size in phi scale
0011 %
0012 % OUTPUT:
0013 %    d: sediment grain size in m
0014 %
0015 % EXAMPLE USAGE
0016 %    d = ST_phi2d(2.5)
0017 %
0018 % Author(s):
0019 %    Geoff Cowles (University of Massachusetts Dartmouth)
0020 %
0021 % Revision history
0022 %
0023 %==============================================================================
0024 
0025 global ftbverbose
0026 [~, subname] = fileparts(mfilename('fullpath'));
0027 if ftbverbose
0028     fprintf('\nbegin : %s\n', subname)
0029 end
0030 
0031 %------------------------------------------------------------------------------
0032 % calculate d and convert to m
0033 %------------------------------------------------------------------------------
0034 
0035 d = 2^(-phi);
0036 d = d*.001;
0037 
0038 if ftbverbose
0039     fprintf('end   : %s\n', subname)
0040 end