TATTMarker_3 not defined in UnROOT

[pranphy]

I have a root file with multiple root histograms. I am trying to read it with unroot but its failing with error TAttMarker_3 not defined in UnROOT.

rootfile = "sync-edge-check6.root";
f = ROOTFile(rootfile)
sync-edge-check6.root
└─ synch_check (TDirectory)
   └─ step_field (TDirectory)
      ├─ syncyed (TH1D)
      ├─ syncxyy (TH2D)
      ├─ syncxyd1 (TH2D)
      ├─ syncvz (TH2D)
      ├─ syncvzd1 (TH2D)
      └─ synce (TH1D)

When I try to access the histogram like this

f["synch_check/step_field/syncyed"]
ERROR: UndefVarError: `TAttMarker_3` not defined in `UnROOT`
Stacktrace:
  [1] stream!(io::IOBuffer, fields::Dict{Symbol, Any}, ::Type{UnROOT.TAttMarker}; check::Bool)
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/streamers.jl:590
  [2] stream!
    @ ~/.julia/packages/UnROOT/ABV18/src/streamers.jl:586 [inlined]
  [3] TH(io::UnROOT.MmapStream, tkey::UnROOT.TKey32, refs::Dict{Int32, Any})
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/bootstrap.jl:984
  [4] TH1D(io::UnROOT.MmapStream, tkey::UnROOT.TKey32, refs::Dict{Int32, Any})
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/bootstrap.jl:954
  [5] getindex(d::UnROOT.ROOTDirectory, s::String)
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/root.jl:195
  [6] getindex(d::UnROOT.ROOTDirectory, s::String)
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/root.jl:191
  [7] _getindex(f::ROOTFile, s::String)
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/root.jl:171
  [8] #150
    @ ~/.julia/packages/UnROOT/ABV18/src/root.jl:163 [inlined]
  [9] get!(default::UnROOT.var"#150#151"{ROOTFile, String}, h::Dict{Any, Any}, key::String)
    @ Base ./dict.jl:458
 [10] getindex(f::ROOTFile, s::String)
    @ UnROOT ~/.julia/packages/UnROOT/ABV18/src/root.jl:162
 [11] top-level scope
    @ none:1

The file: sync-edge-check6.root

Edit: After some investigation I found that it happened only to my files that I created recently with root. Turns this issue only happens for the root files that I created with my latest upgraded root "6.34" I downgraded root back to 6.32.04 and recreated this rootfile and UnROOT correctly parsed the histogram.

[Moelf]

latest upgraded root "6.34" I downgraded root back to 6.32.04 and recreated this rootfile and UnROOT correctly parsed the histogram.

when this happens it means ROOT has internally changed / updated the C++ side definition of TH1D

sigh, I thought they would leave such an old object alone but we should be able to fix this. cc. @tamasgal

[tamasgal]

Ah OK, so this should be it I think: root-project/root@ca1f047

I'll have a look.

[tamasgal]

@pranphy sorry for the long delay, version 0.10.34 is on the way with the fix!

julia> using UnROOT

julia> f = ROOTFile("/Users/tamasgal/Downloads/sync-edge-check6.root")
ROOTFile with 1 entry and 14 streamers.
/Users/tamasgal/Downloads/sync-edge-check6.root
└─ synch_check (TDirectory)
   └─ step_field (TDirectory)
      ├─ syncyed (TH1D)
      ├─ syncxyy (TH2D)
      ├─ syncxyd1 (TH2D)
      ├─ syncvz (TH2D)
      ├─ syncvzd1 (TH2D)
      └─ synce (TH1D)


julia> f["synch_check/step_field/syncyed"]
Dict{Symbol, Any} with 102 entries:
  :fZaxis_fTitleSize   => 0.035
  :fYaxis_fXmin        => 0.0
  :fYaxis_fNbins       => 1
  :fZaxis_fLast        => 0
  :fYaxis_fName        => "yaxis"
  :fMaximum            => -1111.0
  :fZaxis_fLabelFont   => 42
  :fZaxis_fLabelSize   => 0.035
  :fZaxis_fXmin        => 0.0
  :fZaxis_fModLabs     => missing
  :fYaxis_fLabelColor  => 1
  :fZaxis_fLabels      => missing
  :fYaxis_fFirst       => 0
  :fYaxis_fTitleSize   => 0.035
  :fLineColor          => 602
  :fFillColor          => 0
  :fYaxis_fTimeFormat  => ""
  :fNcells             => 102
  :fYaxis_fXbins       => Float64[]
  :fXaxis_fLabelOffset => 0.005
  :fZaxis_fXbins       => Float64[]
  :fZaxis_fName        => "zaxis"
  :fTitle              => "Synchrotron Photon"
  :fTsumw2             => 15545.0
  :fXaxis_fTickLength  => 0.03
  :fXaxis_fTimeFormat  => ""
  :fZaxis_fLabelOffset => 0.005
  :fMarkerStyle        => 1
  :fContour            => Float64[]
  :fZaxis_fXmax        => 1.0
  :fZaxis_fTitleColor  => 1
  :fBarOffset          => 0
  :fXaxis_fTitleOffset => 1.0
  :fXaxis_fModLabs     => missing
  :fYaxis_fLabels      => missing
  :fXaxis_fTitleSize   => 0.035
  :fYaxis_fNdivisions  => 510
  :fXaxis_fTitleColor  => 1
  :fZaxis_fAxisColor   => 1
  :fBarWidth           => 1000
  :fYaxis_fTimeDisplay => false
  :fLineWidth          => 1
  :fMarkerColor        => 1
  :fYaxis_fTitle       => " Count"
  :fXaxis_fNbins       => 100
  :fTsumwx2            => 5.96962e8
  :fXaxis_fNdivisions  => 510
  :fYaxis_fLabelOffset => 0.005
  :fZaxis_fTimeFormat  => ""
  ⋮                    => ⋮

julia>

[tamasgal]

For the sake of completeness, here is how to get the histogram data ;)

julia> h = UnROOT.parseTH(f["synch_check/step_field/syncyed"]; raw=false)
edges: [178.0, 178.42, 178.84, 179.26, 179.68, 180.1, 180.52, 180.94, 181.36, 181.78  …  216.22, 216.64, 217.06, 217.48, 217.9, 218.32, 218.74, 219.16, 219.58, 220.0]
bin counts: [262.0, 230.0, 223.0, 180.0, 209.0, 197.0, 190.0, 178.0, 197.0, 208.0  …  33.0, 27.0, 14.0, 6.0, 9.0, 6.0, 2.0, 4.0, 3.0, 0.0]
total count: 15549.0

julia> typeof(h)
FHist.Hist1D{Float64}

julia> h = UnROOT.parseTH(f["synch_check/step_field/syncvzd1"]; raw=false)
edges: ([-8000.0, -7840.0, -7680.0, -7520.0, -7360.0, -7200.0, -7040.0, -6880.0, -6720.0, -6560.0  …  6560.0, 6720.0, 6880.0, 7040.0, 7200.0, 7360.0, 7520.0, 7680.0, 7840.0, 8000.0], [0.0, 3.0, 6.0, 9.0, 12.0, 15.0, 18.0, 21.0, 24.0, 27.0  …  273.0, 276.0, 279.0, 282.0, 285.0, 288.0, 291.0, 294.0, 297.0, 300.0])
bin counts: [0.0 0.0 … 0.0 0.0; 0.0 0.0 … 0.0 0.0; … ; 0.0 0.0 … 0.0 0.0; 0.0 0.0 … 0.0 0.0]
total count: 16430.0

julia> typeof(h)
FHist.Hist2D{Float64}

[pranphy]

@tamasgal Thank you very much. Really appreciate this.