Can tree select the data by rows?

[songshusen]

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ROOT Version: 6.30
Platform: win10
Compiler: vc++ 2022

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Can tree select the data by rows? For an example, select the data which > 0 from one column?

[couet]

@songshusen

select the data which > 0 from one column?

   tree->Draw("x", "x>0");