OptLabSPX Usage of Calculation Expressions
Besides using the predefined calculation parameters, OptLabSPX also allows defining individual calculations with spectral data and with result values This option lends itself for performing simple quantizations or
decisions. Many routine UV/Vis measurements are based on such principles. This is for example the color intensity and color hue of red wine, which requires simple calculation with the absorbance value at 23 wavelengths.
The calculations can comprise spectral data of one or more spectra, user entries and the standard calculation functions, e.g. +  / *, log, abs, sqr, etc. Additional functions are available for peakpicking within a given range
and with a given threshold or for extracting the highest/lowest value and its abscissa position.
Results can be assigned to a storage position and can be used for another calculation. Logical decisions can be defined with the result of calculations. Thus it is possible to simply execute pass/fail decisions.
Results can be output with a header and a trailer. The decimal places can be defined.
