ROOT data frame - unsupported leaf value

ROOT
1

ROOT Version: 6.24/06
Platform: Mac OS

Hello,

i am experimenting with RDF. I am trying to process a TTree which includes the following branches:

myTree->Branch(“nCount” ,& nCount, “nCount/I”);
myTree->Branch(“values” ,& values, “values[nCount][3]/D”);

When I try to run

ROOT::RDataFrame data(“myTree”, fileName);
data.GetColumnType(“values”);

I get

libc++abi: terminating with uncaught exception of type std::runtime_error: TTree leaf values has both a leaf count and a static length. This is not supported.

What am I doing wrong? Any fixes or workarounds?

Best,

Daniele

2
1 Like
3

Thank you!

4

your information is very interesting and a good question but i am not idea.

5

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