Documentation
¶
Overview ¶
Package ntroot provides convenience functions to access ROOT trees as n-tuple data.
Example:
nt, err := ntroot.Open("testdata/simple.root", "mytree")
if err != nil {
log.Fatalf("%+v", err)
}
defer nt.DB().Close()
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Open ¶
Open opens the named ROOT file in read-only mode and returns an n-tuple connected to the named tree.
Example ¶
package main
import (
"fmt"
"log"
"go-hep.org/x/hep/hbook/ntup/ntroot"
)
func main() {
nt, err := ntroot.Open("../../../groot/testdata/simple.root", "tree")
if err != nil {
log.Fatalf("could not open n-tuple: %+v", err)
}
defer func() {
err = nt.DB().Close()
if err != nil {
log.Fatal(err)
}
}()
err = nt.Scan(
"(one, two, three)",
func(i int32, f float32, s string) error {
fmt.Printf("row=(%v, %v, %q)\n", i, f, s)
return nil
},
)
if err != nil {
log.Fatalf("could not scan n-tuple: %+v", err)
}
}
Output: row=(1, 1.1, "uno") row=(2, 2.2, "dos") row=(3, 3.3, "tres") row=(4, 4.4, "quatro")
Types ¶
This section is empty.
Source Files
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