Stack error when using RDataFrame

ROOT
,
1

Hi, I found a problem when using RDataFrame:
I made a root file with ttree called “tr”. When I use the python script below, different results in different environment were found.

import ROOT
dataFile=ROOT.RDataFrame(“tr”,“Data/vertical_100_1000.root”)
db=dataFile.AsNumpy()

When I use python on cern(python3.9) or ubuntu 20.04with root6.26.14(python3.11), it works well. But it reports several stack errors on Win10 with root6.26.14_x64(python3.8). According to my testing, this issue seems to particularly occur in variables with underlined names in arrays, such as “E_vis”.

The filepath is CERNBox

2

Hi,

Thanks for the report.
I am adding in the loop @bellenot .
Do you see the same problem with ROOT 6.30.06?

Best,
Danilo

3

There are still some issues with RDataFrame on Windows. Can you provide a reproducer we can run?

4

I tested on 6.30.06, it did not occur the same issue.:slight_smile:

5

The script is simply these three lines:

import ROOT
dataFile=ROOT.RDataFrame(“tr”,“Data/vertical_100_1000.root”)
db=dataFile.AsNumpy()

6

Well, OK, but we cannot run your code without the data file… Anyway, since the problem is not present with 6.30.06 I guess this is good enough