**Next message:**Rene Brun: "Re: [ROOT] Problem reading a TRef'd object"**Previous message:**John Pretz: "[ROOT] Problem reading a TRef'd object"**In reply to:**Kalen Martens: "Re: [ROOT] Elimination of suppressed zeros in graphs"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

Hi Kalen, You can force your own range with something like: { TCanvas *c1 = new TCanvas("c1"); c1->DrawFrame(0,0,480,1); Int_t n = 7; Double_t ecm[n]; Double_t nlr[n]; ecm[0]=350 ; nlr[0]=0.80703; ecm[1]=370 ; nlr[1]=0.781981; ecm[2]=390 ; nlr[2]=0.762459; ecm[3]=410 ; nlr[3]=0.740626; ecm[4]=430 ; nlr[4]=0.718904; ecm[5]=450 ; nlr[5]=0.698587; ecm[6]=470 ; nlr[6]=0.677837; TGraph *theplot = new TGraph(n, ecm, nlr); theplot -> Draw("L"); } Rene Brun On Wed, 7 Jan 2004, Kalen Martens wrote: > Hi Rene, > > For example, I want to generate a graph with the following script: > > { > gROOT -> Reset(); > > Int_t n = 7; > > Double_t ecm[n]; > Double_t nlr[n]; > > ecm[0]=350 ; nlr[0]=0.80703; > ecm[1]=370 ; nlr[1]=0.781981; > ecm[2]=390 ; nlr[2]=0.762459; > ecm[3]=410 ; nlr[3]=0.740626; > ecm[4]=430 ; nlr[4]=0.718904; > ecm[5]=450 ; nlr[5]=0.698587; > ecm[6]=470 ; nlr[6]=0.677837; > > TGraph *theplot = new TGraph(n, ecm, nlr); > theplot -> Draw("AL"); > } > > I obtain a graph, but it doesn't include the orgin. I can fix this (in > the y-direction only) by including a line before the graph is drawn: > > theplot -> SetMinimum(0); > > However, it seems I cannot do the same for the x-direction (axis). I was > wondering if there was a way to do that. > > I hope this makes my question more clear. I'm using ROOT 3.10-02. > > -Kalen > > ----------------------------------------------------------------- > > On Wed, 7 Jan 2004, Rene Brun wrote: > > > Hi Kalen, > > > > I do not understand this problem. Could you send me the shortest > > possible script reproducing it? Which version are you using? > > > > Rene Brun > > > > On Wed, 7 Jan > > 2004, Kalen Martens wrote: > > > > > > > > I have created a TGraph object from two arrays of Double_t data. All of > > > the data is in the 1st quadrant. When I do a TGraph::Draw(), the graph is > > > displayed nicely except that the zeroes are not included on the axes. I > > > found that by using TGraph::SetMinimum() I can change the boundaries of > > > the graph in the y-direction to include zero. However, I cannot see a way > > > to achieve the same thing in the x-direction. Is there a way to do this? > > > > > > Many thanks in advance, > > > -Kalen > > > > > > ----------------------------------------------------------------- > > > - Kalen Martens Ph:(416)-978-6632 - > > > - Dept. of Physics - > > > - University of Toronto, Toronto, Canada - > > > ----------------------------------------------------------------- > > > > > >

**Next message:**Rene Brun: "Re: [ROOT] Problem reading a TRef'd object"**Previous message:**John Pretz: "[ROOT] Problem reading a TRef'd object"**In reply to:**Kalen Martens: "Re: [ROOT] Elimination of suppressed zeros in graphs"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

*
This archive was generated by hypermail 2b29
: Sun Jan 02 2005 - 05:50:05 MET
*