Bug in lowess

[Christopher Bratt]

I'm preparing some teaching, so I've switched to Stata. I believe I have found a strange bug.

ds

gives:

pack          swan          diff_pack     diff_swan     limit         balance
eco           bulb          diff_eco      diff_bulb     interference  abusing

But lowess doesn't like the use of "swan" as a variable.

lowess eco diff_eco    // works
lowess swan diff_swan  // invalid syntax r(198);
reg swan diff_swan     // works

I don't have time to engage in discussions, but maybe someone spots the problem. If not, StataCorp may PM me if they want the data to do some testing.

Best,
Christopher
🇺🇦

[Leonardo Guizzetti]

I cannot reproduce the problem you mention, so I think the problem lies on your end somehow.

webuse lowess1, clear
lowess h1 depth

rename h1 swan
lowess swan depth

rename depth diff_swan
lowess swan diff_swan

Using Stata 17 15 Feb 2022.

[Christopher Bratt]

Thanks for trying.
I repeatedly made attempts (e.g. simply switching "eco" with "swan"), but with no success.

I will leave it at that. But thanks a lot for checking!

[Jared Greathouse]

Could you post your example data? And rerun the same command...