Drawing options

ROOT
1

'm plotting the radiation distribution in the air surrounding a circle with a homogeneous radiation distribution.
My source code can be found at
home.fnal.gov/~mauede/APD-Dir/Ci … rces-new.C

The input file is:

cat My-answers.txt
mine.root
710
6.8
0.01
20.0

The hbook can be found at home.fnal.gov/~mauede/APD-Dir/mine.root

If I plot the results by the following commans sequence:

cat Run-Macro.C
{
TFile f(“plots.root”);
TH2D h= (TH2D)f->Get(“Extended”);
gStyle->SetPalette(50);
h->SetContour(99);
h->Draw(“CONT4”);
}

then nothing is plotted and I get a lot of errors messages:

root [0] .x Run-Macro.C
: created default TCanvas with name c1
Warning in : Inf/NaN propagated to the pad. Check drawn objects.
Warning in : c1 width changed from 0 to 10

Warning in : c1 height changed from 0 to 10

Error in : number of points for line not equal 2
Error in : number of points for line not equal 2
Error in : number of points for line not equal 2
Error in : number of points for line not equal 2

If I change the drawing option to “LEGO” I get the same result. But if I change it to "COL"
then I get nice picture. See home.fnal.gov/~mauede/APD-Dir/Ci … es-new.png

Nevertheless, if I click on the top menu bar option “File” to save my picture, no menu is dropped down. Instead I get a bunch of errors:
root [7]
*** Break *** segmentation violation
Generating stack trace…
0xb7928096 in TList::FindLink(TObject const*, int&) const at cont/src/TList.cxx:464 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb792842e in TList::Remove(TObject*) at cont/src/TList.cxx:558 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb5caeabe in TGClient::UnregisterPopup(TGWindow*) at gui/src/TGClient.cxx:478 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5d28fbc in TGPopupMenu::EndMenu(void*&) at gui/src/TGMenu.cxx:1028 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5d2b692 in TGMenuTitle::SetState(bool) at gui/src/TGMenu.cxx:1695 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5d268e5 in TGMenuBar::HandleButton(Event_t*) at gui/src/TGMenu.cxx:405 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5cdc24b in TGFrame::HandleEvent(Event_t*) at gui/src/TGFrame.cxx:444 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5caf783 in TGClient::HandleEvent(Event_t*) at gui/src/TGClient.cxx:746 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5caf2cb in TGClient::ProcessOneEvent() at gui/src/TGClient.cxx:586 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5caf425 in TGClient::HandleInput() at gui/src/TGClient.cxx:632 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb5cad608 in TGInputHandler::Notify() at gui/src/TGClient.cxx:79 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libGui.so
0xb79da16b in TUnixSystem::DispatchOneEvent(bool) at unix/src/TUnixSystem.cxx:738 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb78e01a3 in TSystem::InnerLoop() at base/src/TSystem.cxx:319 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb78e012e in TSystem::Run() at base/src/TSystem.cxx:287 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb784bdaf in TApplication::Run(bool) at base/src/TApplication.cxx:826 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libCore.so
0xb627ca2b in TRint::Run(bool) at rint/src/TRint.cxx:285 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/lib/libRint.so
0x08048e9b in main + 0xb7 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/bin/root.exe
0x0077be23 in __libc_start_main + 0xd3 from /lib/tls/libc.so.6
0x08048d51 in TApplicationImp::ShowMembers(TMemberInspector&, char*) + 0x31 from /afs/fnal.gov/ups/root/v5_10_00a/Linux+2.4-2.3.2-GCC_3_4_3-debug/bin/root.exe

If you look at my source code you’ll see a lot of “catch” statements aimed at finding “inf” and “nan” occurrences which are likely to happen when working with Doubles.
But the Log file is clean. So I’m left speechless …

Many thanks to anyone who helps me understand the difference among the many drawing options.
Maura

2

Where is plots.root? what is mine.root?

Rene

3

My program output is saved to an external file “plots.root” that is then used to generate the isocontours.
The last version can be found on my website:
home.fnal.gov/~mauede/APD-Dir/

as well as “mine.root” which is the Root version of the HBOOK archive storing the original circle 2-D histogram.
Actually at the moment such histogram is only used to get the maximum radiation value, and some core information (bin-width, height, …)

Thank you.
Maura

4

Your histogram “Extended” in plots.root has many bind with infinite values.
To see what I mean, do:

TFile f("plots.root"); TH2D *h= (TH2D*)f->Get("Extended"); h->Print("all"); >x.log
then see the file.log and look at bins, eg

fSumw[119][107]=-1.#IND, x=-3.944, y=-5.576 fSumw[120][107]=-1.#IND, x=-3.808, y=-5.576 fSumw[121][107]=68596.5, x=-3.672, y=-5.576

So you should fix the problem in the source histogram.

Rene