Reading Field from a text file

Hi rooters,
I am newbie with root, so probably my questions will seem too basic.
Well, I have a text file with x, y, z, bx, by, bz data. And I’m trying to find a way to link each (x,y,z) point with its equivalent field Bxyz. Then, draw it.

Thanks for your time

Sharey

ROOT User’s Guide -> Trees -> Example 5: Import an ASCII File into a TTree
${ROOTSYS}/tutorials/tree/basic2.C
TTree::ReadFile
${ROOTSYS}/tutorials/tree/basic.C
${ROOTSYS}/tutorials/tree/cernbuild.C

Thanks a lot Wile