Plain Text ------------------------------------- Text files should be of the form:: wavelength flux err 3637.390 0.314 0.000 3638.227 0.717 0.000 3639.065 1.482 0.000 where there 'err' column is optional but the others are not. The most basic spectrum file allowed would have no header and two columns, e.g.:: 1 0.5 2 1.5 3 0.1 If the X-axis is not monotonic, the data will be sorted so that the X-axis is in ascending order. API ~~~ .. automodule:: pyspeckit.spectrum.readers.txt_reader :members: