Unable to get RooPlot

[krunal_gedia]

Hi,

I am unable to get a simple plot of a branch “BDT_response_l” of a TTree whose value ranges from -1 to +1 using RooPlot.

Am I missing anything (PS:I have not performed any fit yet. Just wanted to see the original data first)

    TFile* file1 = new TFile("nfile_10trees.root","READ");
    TTree* tree = (TTree*)(file1->Get("tree"));

    RooRealVar BDT_response_l("BDT_response_l", "BDT_response_l",-1,1);
    RooDataSet data_set("data_set","data_set",tree,BDT_response_l); 
    data_set.Print();

    RooPlot* frame1 = BDT_response_l.frame();
    data_set.plotOn(frame1);
    frame1->Draw();

Output is

RooDataSet::data_set[BDT_response_l] = 4976 entries
Thanks!

[krunal_gedia]

Sorry, I was importing wrong ROOT TTree.
The above code is working