Hi Rene,
Attached is the eps file. You will notice the fitted parameter
p1=3.567e-5 +/- 7.088e-05 but the stat box shows p1=3.567e-5 +/- 7.088e-0.
Seng
On Sun, 13 Feb 2000, Rene Brun wrote:
> Hi Seng,
> I cannot reproduce this problem with the truncated parameters.
> Could you send me a gif or ps file illustrating the problem ?
>
> Rene Brun
>
> On Fri, 11 Feb 2000, Woon-Seng Choong wrote:
>
> >
> > I am using v2.23/10 on HPUX10.2 running aCC. I have a macro that plot
> > several points and do a linear fit. The error on the fitted parameters is
> > truncated in the stat box. Is there a way to fix this? Below is
> > the macro I used.
> >
> > Seng
> >
> >
> > void plot_mombias() {
> > gROOT->Reset();
> > c1 = new TCanvas("c1","HMC Output vs Beam Momentum",200,10,700,500);
> > c1->SetGrid();
> >
> > // draw a frame to define the range
> > TH1F *hr1 = c1->DrawFrame(140,-0.005.,190,0.03);
> > hr1->SetXTitle("Average Beam Momentum");
> > hr1->SetYTitle("HMC Estimate - Input Generation Value");
> > hr1->SetTitleOffset(1.3, "Y");
> > hr1->SetTitle("HMC Output (Input g=-0.2154) vs Average Beam Momentum");
> >
> > const Int_t n = 8;
> > Float_t x[n] = {147.577700,152.554231,157.480476,162.457551,167.479134,172.467954,
> > 177.447382,182.435490};
> > Float_t ex[n] = {0, 0, 0, 0, 0, 0, 0, 0};
> > Float_t y[n] = {.12963e-1,.11759e-1,.06063e-1,.08780e-1,.10120e-1,.10231e-1,
> > .12242e-1,.10814e-1};
> > Float_t ey[n] = {2.82768e-03, 2.43126e-03,2.17597e-03,2.02725e-03,1.97245e-03,1.94164e-03,
> > 1.97880e-03, 2.05305e-03};
> >
> > Float_t chi2[n] = {344.125, 368.906, 390.534, 304.297, 383.312, 359.423,
> > 417.878, 393.309};
> > Float_t dof[n] = {285, 285, 284, 288, 287, 291, 289, 292};
> >
> >
> > // create graph
> > gr = new TGraphErrors(n,x,y,ex,ey);
> > gr->SetMarkerColor(kBlack);
> > gr->SetLineColor(kBlack);
> > gr->SetMarkerStyle(20);
> > gr->Draw("P");
> >
> >
> > gStyle->SetOptFit(111);
> > gStyle->SetStatW(0.2);
> > gStyle->SetStatH(0.1);
> > TF1 *f1 = new TF1("f1", "[0]+[1]*(x-155)", 145, 185);
> > gr->Fit("f1");
> >
> > c1->Print("hybrid_mombias.eps");
> >
> >
> > }
> >
>
>
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