Functions
	fill_tree (treeName, fileName)

Variables
	c = ROOT.TCanvas()
	d = ROOT.RDataFrame(treeName, fileName)
	d2
	d_cut = d.Filter("b1 % 2 == 0")
	f1 = ROOT.TFile(outFileName)
	f2 = ROOT.TFile(outFileNameAllColumns)
str	fileName = "df007_snapshot_py.root"
str	getVector_code
	h = snapshot_df.Histo1D("b1_square")
str	outFileName = "df007_snapshot_output_py.root"
str	outFileNameAllColumns = "df007_snapshot_output_allColumns_py.root"
	snapshot_df = d2.Snapshot(treeName, outFileName, ["b1_square"]);
	t = f1[treeName]
str	treeName = "myTree"

Function Documentation

◆ fill_tree()

df007_snapshot.fill_tree	(		treeName,
			fileName )

Definition at line 17 of file df007_snapshot.py.

Variable Documentation

◆ c

df007_snapshot.c = ROOT.TCanvas()

Definition at line 88 of file df007_snapshot.py.

◆ d

df007_snapshot.d = ROOT.RDataFrame(treeName, fileName)

Definition at line 30 of file df007_snapshot.py.

◆ d2

df007_snapshot.d2

Initial value:

1= d_cut.Define("b1_square", "b1 * b1") \

2 .Define("b2_vector", "getVector( b2 )")

Definition at line 48 of file df007_snapshot.py.

◆ d_cut

df007_snapshot.d_cut = d.Filter("b1 % 2 == 0")

Definition at line 34 of file df007_snapshot.py.

◆ f1

df007_snapshot.f1 = ROOT.TFile(outFileName)

Definition at line 60 of file df007_snapshot.py.

◆ f2

df007_snapshot.f2 = ROOT.TFile(outFileNameAllColumns)

Definition at line 74 of file df007_snapshot.py.

◆ fileName

str df007_snapshot.fileName = "df007_snapshot_py.root"

Definition at line 23 of file df007_snapshot.py.

◆ getVector_code

str df007_snapshot.getVector_code

Initial value:

= '''
std::vector<float> getVector (float b2)
{
   std::vector<float> v;
   for (int i = 0; i < 3; i++) v.push_back(b2*i);
   return v;
}
'''

Definition at line 38 of file df007_snapshot.py.

◆ h

df007_snapshot.h = snapshot_df.Histo1D("b1_square")

Definition at line 86 of file df007_snapshot.py.

◆ outFileName

str df007_snapshot.outFileName = "df007_snapshot_output_py.root"

Definition at line 24 of file df007_snapshot.py.

◆ outFileNameAllColumns

str df007_snapshot.outFileNameAllColumns = "df007_snapshot_output_allColumns_py.root"

Definition at line 25 of file df007_snapshot.py.

◆ snapshot_df

df007_snapshot.snapshot_df = d2.Snapshot(treeName, outFileName, ["b1_square"]);

Definition at line 85 of file df007_snapshot.py.

◆ t

df007_snapshot.t = f1[treeName]

Definition at line 61 of file df007_snapshot.py.

◆ treeName

str df007_snapshot.treeName = "myTree"

Definition at line 26 of file df007_snapshot.py.

Functions

Variables