I am trying to plot stacked histogram but Canvas doesn’t show any plot.

```
void Analysis(TString file1, TString file2)
{
THStack hs("hs", "Filtered data for december and January");
TFile f1(file1);
TTree* t1 =(TTree*) f1.Get("current_ntuple");
float_t curr;
t1->SetBranchAddress("Current", &curr);
Double_t MinBound = 0;
Double_t MaxBound = 100;
Int_t Numbins = 100;
ULong64_t n = t1->GetEntries();
TH1D* curr_vals_raw = new TH1D("curr_vals_raw", "Raw current distribution", Numbins, MinBound, MaxBound);
curr_vals_raw->GetXaxis()->SetTitle("Current [#muA]");
curr_vals_raw->GetYaxis()->SetTitle("Percentage");
for (Int_t i = 0; i< n;i++)
{
t1->GetEntry(i);
curr_vals_raw->Fill(curr);
}
curr_vals_raw->SetName("Dec Current");
curr_vals_raw->SetDirectory(0);
hs.Add(curr_vals_raw);
f1.Close();
TFile f2(file2);
TTree* t2= (TTree*) f2.Get("current_ntuple");
float_t curr2;
t2 -> SetBranchAddress("Current", &curr2);
ULong64_t m= t2->GetEntries();
TH1D* curr_vals_stable = new TH1D("curr_vals_stable", "Stable data Current Distribution", Numbins, MinBound, MaxBound);
curr_vals_stable->GetXaxis()->SetTitle("Current [#muA]");
curr_vals_stable->GetYaxis()->SetTitle("Percentage");
curr_vals_stable->SetLineColor(kRed);
curr_vals_stable->SetMarkerStyle(7);
curr_vals_stable->SetName("Stable Current Distribution");
for (Int_t f = 0; f<m;f++)
{
t2->GetEntry(f);
curr_vals_stable->Fill(curr2);
}
curr_vals_stable->SetDirectory(0);
hs.Add(curr_vals_stable);
f2.Close();
TCanvas* c1= new TCanvas();
curr_vals_raw->Draw();
curr_vals_stable->Draw("same");
c1->Divide(1,1);
hs.Draw("nostack");
TFile outputFile("Decvsjan.root", "recreate");
curr_vals_raw->Write("Current December");
curr_vals_stable->Write("Current January");
outputFile.Close();
}
```