function units=units2frequencydomain(units)% Create units in the frequency domain from those in the time domain%% Written by: E. R.: March 22, 2006% Last updated:%%         units=units2frequencydomain(units)% INPUT% units   string with units of measurement; recognized units are: %        's','ms','us','m','ft','samples'% OUTPUT% units   string with units of measurements after Fourier transform (e.g. 'Hz','Wavelength per 1000 m')%% EXAMPLE%         units2frequencydomain('samples')switch unitscase 's'   units='mHz';case 'ms'   units='Hz';case 's'   units='mHz';case 'us'   units='kHz';case 'm'   units='Wavelengths per 1000 m';case 'ft'   units='Wavelengths per 1000 ft';case {'samples','Samples'}   units='Wavelengths per 1000 samples';otherwise    units=['1/1000 ',units];     end