int BGITest()
{


	
	TCanvas c("Canvas","Raw data rebinned",1); // = new TCanvas();
	c.SetFillColor(42);
	c.SetGrid();
	
		


       	TH1F *hprofile = new TH1F("hprofile","RAW profile",250,0.,250);       
        for(unsigned int it=0; it<250; it++)  {
	      	hprofile->SetBinContent(it+1,1.);
	}  
			
		
	hprofile->Rebin(2); // replace by sliding window (as Ana did)
	hprofile->Draw();


// this works:
	c.SaveAs("hprofile.gif");

	c.Update();
	c.Paint();
	c.Draw();
	c.Modified();

	// waiting for the key to be pressed:
	cin.get();

	return 0;

}