Source: stream/spect/spect_stream__form_sratio.pro
spect_stream::form_sratio Forms a ratio between two previously plotted streams, and adds them as a new stream to the dataset. Usage: dsref -> form_sratio, base Arguments: base int input The sector number to use as a "base" (0 is average) History: Original version, from rate: 1/5/02; SJT