I create a graph: const double x[] = {0.0, 1.0}; const double y[] = {20000.0, 10000.0}; TGraph g(2, x, y); g.GetYaxis() -> SetTitle("#frac{A}{B}"); When I draw it: TCanvas c; g.Draw("AP*"); the y axis label is pushed outside of the canvas: [graph] How to fix this problem?

Besides c1 -> SetLeftMargin(0.2); one also needs to call g.GetYaxis() -> SetTitleOffset(2.0);

It is because the axis labels are long and the title is automatically positioned to not overlap them. That was a recent request we had. Before the title would have overlapped the labels. Do: { const double x[] = {0.0, 1.0}; const double y[] = {20000.0, 10000.0}; TGraph g(2, x, y); g.…

Now the result is: [graph] Luckily the y axis title has not bumped into the axis label (20000).

If I set the y axis title as follows g.GetYaxis() -> SetTitle("-2ln#frac{A}{B}"); the result is no longer acceptable: [graph] Now I could ask the question again - how to fix the problem?

{ const double x[] = {0.0, 1.0}; const double y[] = {20000.0, 10000.0}; TGraph g(2, x, y); g.GetYaxis()->SetTitle("-2ln#frac{A}{B}"); g.GetYaxis()->SetTitleOffset(5.); g.GetYaxis()->CenterTitle(kTRUE); g.GetXaxis()->SetTitle("#frac{A}{B}"); g.GetXaxis()->SetTitleOffset(5.); g.GetXa…

{ auto *c1 = new TCanvas(); c1->SetLeftMargin(0.2); const double x[] = {0.0, 1.0}; const double y[] = {20000.0, 10000.0}; TGraph g(2, x, y); g.GetYaxis() -> SetTitle("-2ln#frac{A}{B}"); g.Draw("A*"); }

this all seems a bit fragile. a probably better strategy would be for the ROOT painter to automatically compute the width+height needed for the X/Y axes, their ticks+ticks’ labels, reserve enough space for those, and then display the axis-label in the leftover space. no user intervention needed. (…

[image] sbinet: no user intervention needed. Yes that’s always the same discussion “automatic” vs “user control” … If all is automatic there is no way to define precisely a plot ready for publication placing precisely all the elements. We are now by default placing the Y axis title automati…

yes, nature or nurture :slight_smile: still, there is a difference between having something automatic that automatically put overlaping glyphs (as is reported here) and something that doesn’t fit someone’s aesthetical taste.

Another recent discussion about this: [image] Axis Label Placement ROOT Continuing the discussion from Making sure axis label and title don't overlap : Ive had a user complain to me about the fact that some of the axis titles are now placed off the screen since version 6.1…

Label pushed outside of canvas

ROOT

ksmith December 8, 2017, 8:58pm 10

Another recent discussion about this: