From bc4d99343bdb36ff0b57ade843d8f044b46a74ad Mon Sep 17 00:00:00 2001
From: Rene Brun <Rene.Brun@cern.ch>
Date: Tue, 5 Jun 2001 13:51:13 +0000
Subject: [PATCH] Modify the functions: TGraph::Fit TH1::Fit
TTreePlayer::UnbinnedFit to call TF1::SetNDF(ndf) where ndf is the number of
degrees of freedom taking into account the number of points used in the fit
minus the number of free parameters.
git-svn-id: http://root.cern.ch/svn/root/trunk@2375 27541ba8-7e3a-0410-8455-c3a389f83636
---
graf/src/TGraph.cxx | 3 ++-
hist/src/TH1.cxx | 5 +++--
treeplayer/src/TTreePlayer.cxx | 3 ++-
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/graf/src/TGraph.cxx b/graf/src/TGraph.cxx
index ac2a35efed5..ecf1981ade0 100644
--- a/graf/src/TGraph.cxx
+++ b/graf/src/TGraph.cxx
@@ -1,4 +1,4 @@
-// @(#)root/graf:$Name: $:$Id: TGraph.cxx,v 1.38 2001/03/22 07:26:58 brun Exp $
+// @(#)root/graf:$Name: $:$Id: TGraph.cxx,v 1.39 2001/05/19 17:41:37 brun Exp $
// Author: Rene Brun, Olivier Couet 12/12/94
/*************************************************************************
@@ -759,6 +759,7 @@ void TGraph::Fit(TF1 *f1, Option_t *option, Option_t *)
}
grFitter->GetStats(amin,edm,errdef,nvpar,nparx);
grF1->SetChisquare(amin);
+ grF1->SetNDF(grF1->GetNumberFitPoints()-npar-nfixed);
//*-*- Print final values of parameters.
if (!fitOption.Quiet) {
diff --git a/hist/src/TH1.cxx b/hist/src/TH1.cxx
index e850dc951d4..764e661b149 100644
--- a/hist/src/TH1.cxx
+++ b/hist/src/TH1.cxx
@@ -1,4 +1,4 @@
-// @(#)root/hist:$Name: $:$Id: TH1.cxx,v 1.48 2001/05/08 14:01:25 rdm Exp $
+// @(#)root/hist:$Name: $:$Id: TH1.cxx,v 1.49 2001/05/24 21:27:06 brun Exp $
// Author: Rene Brun 26/12/94
/*************************************************************************
@@ -1727,7 +1727,8 @@ void TH1::Fit(TF1 *f1 ,Option_t *option ,Option_t *goption, Axis_t xxmin, Axis_t
if (Foption.Like) H1FitChisquare(npar, params, amin, params, 1);
gF1->SetChisquare(amin);
-
+ gF1->SetNDF(gF1->GetNumberFitPoints()-npar-nfixed);
+
//*-*- Store fitted function in histogram functions list and draw
if (!Foption.Nostore) {
if (!Foption.Plus) {
diff --git a/treeplayer/src/TTreePlayer.cxx b/treeplayer/src/TTreePlayer.cxx
index 696c236332c..a6017da95fb 100644
--- a/treeplayer/src/TTreePlayer.cxx
+++ b/treeplayer/src/TTreePlayer.cxx
@@ -1,4 +1,4 @@
-// @(#)root/treeplayer:$Name: $:$Id: TTreePlayer.cxx,v 1.47 2001/05/07 12:34:35 brun Exp $
+// @(#)root/treeplayer:$Name: $:$Id: TTreePlayer.cxx,v 1.48 2001/05/28 06:32:09 brun Exp $
// Author: Rene Brun 12/01/96
/*************************************************************************
@@ -3198,6 +3198,7 @@ Int_t TTreePlayer::UnbinnedFit(const char *funcname ,const char *varexp, const c
tFitter->ExecuteCommand("MINOS",arglist,0);
}
fitfunc->SetChisquare(0); //to not confuse user with the stored sum of w**2
+ fitfunc->SetNDF(fitfunc->GetNumberFitPoints()-npar);
// Get return status into function
char parName[50];
--
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