Error bar not computed in Root with AthAnalysisBase2.4.11

ROOT
#1

Hi everyone,

Apologies if it is not the correct place to post this.

I am using AthAnalysisBase 2.4.11, with root version ROOT 6.04/16 for my analysis. Using this ROOT version I find out that root is not computing error bars while running over data set. For Monte Carlo samples everything is find. Please find in the attachment

data_NoErr.png839×612 8.57 KB

a plot showing Data/MC and you can see no error bars on data points.

I am correctly using histogram Sumw2() method, also I dont see this problem if I use ROOT version 6.02/12

Any suggestions how to fix this.

Thank you,
Babar

#2

Do you have the problem with 6.06 ?

#3

Hello,

As I am using AthAnalysisBase 2.4.11 this is the latest release and it has only ROOT version 6.04.

I dont know if this problem persists with ROOT 6.06 or not.

P.S I use lxplus for analysis.

#4

OK. May be you can try to save you TCanvas as a .C file and post it here ?

#5

I am not sure what you mean by to save TCanvas?

As I wrote before when I use ROOT 6.02 everything is fine and when I use ROOT 6.04 I see this problem.
There is no such bug or issue in my code with plotting or filling the histograms. Its just unexceptional problem with this ROOT version.

I am just wondering if there are major changes in TH1 class happened when going to 6.02 to 6.04?

#6

The graphics window … File -> Save -> yourcnavas.C

#7

[quote=“couet”][quote]
I am not sure what you mean by to save TCanvas?
[/quote]

The graphics window … File -> Save -> yourcnavas.C[/quote]

Here it is Canvas_1.C (2.31 KB)

#8

I am sorry I didnt mentioned it before. I am actually using python script for plotting. So the plot which I posted before was made by using python.

Does it has to do something with pyRoot?

#9

Your macro gives me the attached plot.
No it has nothing to do with Python.

Screen Shot 2016-06-22 at 17.12.52.png1133×880 35.2 KB

#10

Well If I plot the same histogram using python I get this

plot.png874×508 6.41 KB

So in fact it has to do with python.

Am I missing something here??

#11

I guess It has more to do with the ROOT version : I am using the master. 6.07/07

I will tell Lorenzo.

#12

[quote=“couet”]I guess It has more to do with the ROOT version : I am using the master. 6.07/07

I will tell Lorenzo.[/quote]

Hello,

Any luck of solving this issue??

#13

Is it ok with C++ ?

#14

Yes in C++ its Ok.

But all my scripts are in python. I can’t switch to c++ now.

#15

can you post here the little python script ?

#16

Here is the file . I put some comments in. Please let me know if there is any question.
script.py (2.5 KB)

#17

It seems I am missing some “imports”. Can they be deleted ?

$ python script.py 
Traceback (most recent call last):
  File "script.py", line 15, in <module>
    import PhysicsLight.PhysicsLightXSec    as XSec
  File "/Users/couet/git/roottrunk-bin/lib/ROOT.py", line 303, in _importhook
    return _orig_ihook( name, *args, **kwds )
ImportError: No module named PhysicsLight.PhysicsLightXSec
#18

No they cannot be deleted. From this file PhysicsLightXSec I am using some classes. Basically that class search for root file in a directory and open it. If there are lot of root files, it adds them.

I am sorry I think you cannot run this script. I just posted that you can get the idea what I am doing.

Just wondering, Is there a way that one can forcefully change the root version when importing?

You can give me some hints I can try that for you If you like.

#19

As far as I can see your macro looks fine.
What about if you convert Canvas_1.C into python ? That could be a simpler way to test.

#20

[quote=“couet”]As far as I can see your macro looks fine.
What about if you convert Canvas_1.C into python ? That could be a simpler way to test.[/quote]

I modify the script. It is working for me for ROOT version 6.02

Could you try it for ROOT version 6.04 or higher?

Thanks

script.py (1.95 KB)