void plotPixelPlane(){

	TFile *f = new TFile("FOCALPixelPlane.root", "READ");
	TH2Poly *p = (TH2Poly*) f->Get("h2polyFOCALPixelPlane");
	// p->SetLineColor(kRed);
	// p->SetLineStyle(2);
	// p->SetLineWidth(4);

	TIter iter(p->GetBins());
	while(auto bin = (TH2PolyBin *) iter()) {
		TGraph *gr = (TGraph *) bin->GetPolygon();
	   gr->SetLineColor(kRed);
	   gr->SetLineStyle(2);
	   gr->SetLineWidth(4);
	}
	TCanvas *c = new TCanvas("c","c",600,600);
	p->Draw("L");
	c->SaveAs("cPixelPlane.png");
}