#1 RooCurve invalid range

[Itaru Kitayama]

After I think I reduced a TH2D (x,y) obejct to a TH1D (x),
I tried to narrow the x range with the frame() method.

I get theses messages:
RooCurve::average(curve_sumProjected) invalid range
(1.77,1.7725)
[...]
to end of the x range, 1.97.

If I keep the original x range, Roofit doesn't complain.

The macro is in
/afs/slac.stanford.edu/u/br/itaru/releases/root1223/workdir/myroofittest.C

Itaru Kitayama

[Wouter Verkerke]

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Hi Itaru,

The warning messages are generated in the chiSquare
calculation in your example. For each chi^2 contribution the
PDF curve needs to be integrated over the bin width. The
current implementation can only do that if the PDF curve has
points that are exactly on the bin boundaries. In your
example this is no longer the case if you change the frame
range.

Since each curve is guaranteed a 1e-3 precision, the
boundary points can safely be determined from a linear
interpolation from the nearest two points. I will commit a
fix for this in the next days

Wouter

[Wouter Verkerke]

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Hi,

This problem is fixed.

Wouter

[Itaru Kitayama]

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Hi Wouter. Thanks for fixing it. -itaru