The attached script SOMETIMES draws the line of the fit results and SOMETIMES do NOT; with gPad.Update() after Draw()ing, the line is always drawn.
A C++/Cling version never fails even w/o the Update().
Also, the example in
220.127.116.11 Fitting Histograms' of theROOT User’s Guide’ always draws the line.
Why? What’s the difference?
On Linux (fedora-20, i386), Python 2.7.5, ROOT 6.02/00 Built by myself From git tag v6-02-00, 30 September 2014