Format input data

a|e accepts ASCII formatted input files. The input data can either be defined from high to low wavelengths or from low to high wavelengths. Texted headerlines are allowed.

The first two data columns will be interpreted as [nm data]:


If the input file contains more than two columns (i.e. more than one spectrum), a|e automatically detects what columns are spectral data and what columns are wavelength data by assuming the latter is increasing linearly (allowing a deviation from linearity between neighbouring data points of up to 0.2). E.g. an input file with the following columns:


will be interpreted by a|e as [nm data nm data nm data], while an input file with the following data structure:


will be interpreted as [nm data data data].