Hi,
How can I convert root file to txt file, please?
That what I did.
ofstream file;
file.open(“here.txt”);
file<<energy<<endl;
but it stored only the value of the last event.
Thanks
Hi,
How can I convert root file to txt file, please?
That what I did.
ofstream file;
file.open(“here.txt”);
file<<energy<<endl;
but it stored only the value of the last event.
Thanks
it depends on what you want to extract from the ROOT file (ie: histograms or tree).
but the root-dump command (from the Go-HEP/groot project), may be of interest.
$> root-dump ./testdata/small-flat-tree.root
>>> file[./testdata/small-flat-tree.root]
key[000]: tree;1 "my tree title" (TTree)
[000][Int32]: 0
[000][Int64]: 0
[000][UInt32]: 0
[000][UInt64]: 0
[000][Float32]: 0
[000][Float64]: 0
[000][Str]: evt-000
[000][ArrayInt32]: [0 0 0 0 0 0 0 0 0 0]
[000][ArrayInt64]: [0 0 0 0 0 0 0 0 0 0]
[000][ArrayInt32]: [0 0 0 0 0 0 0 0 0 0]
[000][ArrayInt64]: [0 0 0 0 0 0 0 0 0 0]
[000][ArrayFloat32]: [0 0 0 0 0 0 0 0 0 0]
[000][ArrayFloat64]: [0 0 0 0 0 0 0 0 0 0]
[000][N]: 0
[000][SliceInt32]: []
[000][SliceInt64]: []
[...]
$> root-dump ./testdata/hh2d.root
>>> file[./testdata/hh2d.root]
key[000]: h2;1 "h2" (TH2D)
BEGIN YODA_HISTO2D_V2 /h2
Path: /h2
Title: h2
Type: Histo2D
---
# Mean: (2.250000e+00, 1.250000e+00)
# Volume: 4.000000e+00
# ID ID sumw sumw2 sumwx sumwx2 sumwy sumwy2 sumwxy numEntries
Total Total 4.000000e+00 4.000000e+00 9.000000e+00 2.300000e+01 5.000000e+00 1.300000e+01 9.000000e+00 8.000000e+00
# 2D outflow persistency not currently supported until API is stable
# xlow xhigh ylow yhigh sumw sumw2 sumwx sumwx2 sumwy sumwy2 sumwxy numEntries
-4.000000e+00 -3.200000e+00 -5.000000e+00 -4.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
-4.000000e+00 -3.200000e+00 -4.000000e+00 -3.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
-4.000000e+00 -3.200000e+00 -3.000000e+00 -2.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
[...]
hth,
-s
Thanks
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