b = uminus(s) : opposite value of iData object @iData/uminus function to return the opposite value of data sets, i.e. b=-s. input: s: object or array (iData) output: b: object or array (iData) ex: b=uminus(a); Version: Aug. 22, 2017 See also iData, iData/uminus, iData/abs, iData/real, iData/imag, iData/uplus