Draw borders between bins in TH2F

[Va_Findesiecle]

Hello all,

I got a TH2F histogram, each bin of that represents energy in one cell in the detector. Is there a way to draw borders between bins to make a more clear distinction between them?

I know about TLine, but is seems quite unsuitable here to use it.

[Wile_E_Coyote]

THistPainter

[linev]

I do not think that such option exists, but @couet can correct me

[couet]

It is not foreseen as an option. But it is simple to do:

void drawgrid()
{
   double xs = 0.2; // grid step along X
   double ys = 0.2; // grid step along Y
   double xmin,ymin,xmax,ymax;
   gPad->GetRangeAxis(xmin,ymin,xmax,ymax);
   auto aline = new TLine();
   aline->SetLineStyle(3);
   for (double yg = ymin+ys; yg < ymax; yg=yg+ys) aline->PaintLine(xmin,yg,xmax,yg);
   for (double xg = xmin+xs; xg < xmax; xg=xg+xs) aline->PaintLine(xg,ymin,xg,ymax);
}

void customgrid()
{
   gStyle->SetOptStat(0);
   auto h = new TH2D("h","",10,0,10,10,0,10);
   h->Draw();
   h->GetXaxis()->SetRangeUser(2,8);
   gPad->Update();

   auto grid = new TExec("grid","drawgrid()");
   grid->Draw();
}