Transform data spatial data to amplitudes in cycles per spatial unit [freq,fData] = ieSpace2Amp(pos,data,scaleData) The returned amplitudes are abs(fft(data)). The spatial frequency value units are in cycles per unit of the input data. For example, if the input data are in mm, then the output data are in cycles per mm. If the input data are in meters, then the output is cycles per meter pos: Positions in real units data: vector of data in the spatial domain See plotOI for examples of the usage. Copyright ImagEval Consultants, LLC, 2005.