In the 3D trace elements youtube tutorial, the line describing fractionation appears pretty much right away when you click to add the fractionation correction. When I try on my data, nothing happens, and when I go to crunch data anyways with the fractionation correction box checked (but no lines appearing in the fractionation tab) I get the error message "There was an error in your python runDRS function: x must be increasing if s > 0 File "file path/iolite/Plugins/Data reduction schemes/3d_trace_elements.py", line 1115, in runDRS t, r, rsd, sp = cal.fitFractionation(c.name, ise, group=g)".
The only element I can get the fractionation correction to appear for in DRS is Si, which I am using as an internal standard anyways so the normalized value is always 1 in the fractionation tab of DRS. Any ideas on why I can't correct for downhole fractionation of any of the elements?
