Hi Steffen, specify your font with precision 3 where font size is given in pixels. Like: . graph1->GetXaxis()->SetTitleFont(23); graph1->GetXaxis()->SetTitleSize(10); See description of class TAttText. Cheers, Fons. On Thu, 2002-03-21 at 13:08, Steffen Grohmann wrote: > Hello, > > Setting TTF size of titles and axis labels in histograms and graphs, I > have to enter relative values according to the NDC: > > e.g. graph1->GetXaxis()->SetTitleFont(22); > graph1->GetXaxis()->SetTitleSize(0.04); > > Now, if I have two graphs in one canvas, which do not have the same > size, the same values of SetTitleSize() result in different text sizes > in the two graphs due to the different NDCs. > Trying to find a conversion factor I noticed that the ratio of the > diagonals (in pixel dimensions) seems to work quite well: > > e.g. d1 = sqrt(deltax1^2 + deltay1^2) {measured by hand from a plot} > d2 = sqrt(deltax2^2 + deltay2^2) { -"- } > graph1->GetXaxis()->SetTitleFont(22); > graph1->GetXaxis()->SetTitleSize(0.04); > graph2->GetXaxis()->SetTitleFont(22); > graph2->GetXaxis()->SetTitleSize(0.04*d1/d2); > > This is a rather awkward procedure, where I didn't manage to > automatically retrieve the deltax and deltay values. > > Is there any method to define the text size of TTF as an absolute size > in order to have consistent text scaling in a canvas of multiple graphs? > > I noticed a difference for using TPaveLabels and TPaveText as well. For > TPaveText the scaling seems to follow the scaling of the graph, whereas > the text scaling in TPaveLabels seems to depend on the height of the > label. > > I think it would be handy to be able to scale the text with the size of > the entire canvas to have the same sizes in all sub-pads. > > Regards, Steffen -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
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