Dear Experts
I wanted to study the correlation between a sets of variables. I followed an example. I have attached the macros for your kind information.
Thanking you
Kanhaiya Gupta
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ROOT Version: Not Provided
Platform: Not Provided
Compiler: Not Provided
correlation.cpp (2.0 KB)
The statement “does not work” is not really useful.
What concerns ROOT … right after “t->GetEntry(i);” do you get proper values of “age”, “sex”, …, “charges”?
If yes, your problem is NOT related to ROOT.
If no, attach the output of: t->Print();
Thank you. I find the problem is:
root [0] #include <xtensor/xarray.hpp>
ROOT_prompt_0:1:10: fatal error: ‘xtensor/xarray.hpp’ file not found
#include <xtensor/xarray.hpp>
I followed the previous question. So I checked
root [6] .I
-I
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/etc/
-I
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/etc//cling
-I
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/include/
-cxx-isystem
/usr/include/c++/7
-cxx-isystem
/usr/include/x86_64-linux-gnu/c++/7
-cxx-isystem
/usr/include/c++/7/backward
-isystem
/usr/local/include
-isystem
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/etc//cling/lib/clang/5.0.0/include
-extern-c-isystem
/usr/include/x86_64-linux-gnu
-extern-c-isystem
/include
-extern-c-isystem
/usr/include
-I
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/include
-resource-dir
/cvmfs/sft.cern.ch/lcg/app/releases/ROOT/6.20.00/x86_64-ubuntu18-gcc74-opt/etc//cling/lib/clang/5.0.0
-fmodule-cache-path
/tmp/org.llvm.clang.s6kagupt/ModuleCache
-nostdinc++
and I tried with
root [7] gSystem->AddIncludePath("/usr/local/include")
root [8] #include <xtensor/xarray.hpp>
ROOT_prompt_8:1:10: fatal error: ‘xtensor/xarray.hpp’ file not found
#include <xtensor/xarray.hpp>
**^~~~~~~~~~~~~~~~~~~~**
The “xtensor” is NOT a part of ROOT.
The error message is clear.
Apparently, it was not installed on your system. Maybe you need:
sudo apt-get install xtensor-dev
Thank you very much.