Data-analysis

• Decode
• GUI
• PKUXIADAQ
  • Correlation
  • Draw
• GSIDAQ
• Root
  • Hitogram的bin太多会报错：
    • Error in TBufferFile::WriteByteCount: bytecount too large (more than 1073741822)
  • TTree::Draw()：设置string的cut
    • tree->Draw("ye:yzid>>yze(60, 0, 60, 510, 0.0, 510.0)", "p==\"gamma\"");
  • TTree::Draw()：数组下标 Iteration$
    • tree->Draw("data:Iteration$", "", "*", 1, 7)
  • THttpServer::Register("Path", THD)
    • path（包括子path） 不能以数字开头 （不信你就试试！！）
  • Error in TFile::WriteTObject: Directory ***.root is not writable
    • 这不是权限问题，是你文件close早了！！！
  • TTree::Draw()：Get TGraph

    n = tree->Draw("YSO0D.data:Iteration$>>tr", "", "", 167, 1);
    TGraph *g = new TGraph(n,tree->GetV2(),tree->GetV1());