Hello all,
I’ve implemented a simple website to display some canvas stored in a GitHub repo by using jsroot online. My approach is to create locally some .root files with TCanvas->SaveAs("name.root") and then push them to the repository.
However, I’ve added a TCanvas that contains a TRatioPlot residual figure but jsroot is unable to render the contents properly: only one of the pads is drawn and it is unreactive to any gestures (zooming, axis, etc). On the contrary, if I open the file locally and Draw()the canvas, everything works fine. This is the expected output:
The TCanvas I want to display is cFit in this location (it will open the online jsroot browser). These are the lines that create the canvas:
// h: a TH1D* pointer
// model: a custom fitting function
// res: TFitResult
auto* c {new TCanvas {TString::Format("cGF%d", cCount), title.c_str()}};
// Create a legend
auto* leg {new TLegend {0.5, 0.6, 0.9, 0.9}};
auto* clone {(TH1D*)h->Clone()};
clone->GetXaxis()->SetRangeUser(exmin, exmax);
clone->SetStats(false);
// Model pointer
auto* ptr {new Fitters::Model {}};
*ptr = model;
// Wrap into TF1
auto* tf1 {new TF1 {"fitfunc", [=](double* x, double* p) { return (*ptr)(x, p); }, exmin, exmax,
static_cast<int>(ptr->NPar())}};
tf1->SetParameters(res.Parameters().data());
tf1->SetNpx(2000);
// And append to funtion list
clone->GetListOfFunctions()->Clear();
clone->GetListOfFunctions()->Add(tf1);
// And ratio plot now!
auto* ratio {new TRatioPlot {clone, "", &res}};
ratio->SetH1DrawOpt("e"); // visualize errors for histogram
ratio->SetGraphDrawOpt("p"); // same for residuals
ratio->Draw();
// std::cout << "Canvas : " << c << '\n';
// std::cout << "up : " << ratio->GetUpperPad() << '\n';
// std::cout << "low : " << ratio->GetLowerPad() << '\n';
// std::cout << "gPad : " << gPad << '\n';
// And draw the other things
// ratio->GetUpperPad()->cd();
// DrawGlobalFit(nullptr, hfits, leg, labels);
c->cd();
Any help would be highly appreciated. Thanks in advance!
ROOT v6.32.02
Built for linuxx8664gcc on Jun 18 2024, 04:33:34
From tags/v6-32-02@v6-32-02
With c++ (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
