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p1d.go
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p1d.go
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// Copyright ©2022 The go-hep Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package rhist
import (
"fmt"
"reflect"
"go-hep.org/x/hep/groot/rbytes"
"go-hep.org/x/hep/groot/rcont"
"go-hep.org/x/hep/groot/root"
"go-hep.org/x/hep/groot/rtypes"
"go-hep.org/x/hep/groot/rvers"
)
// Profile1D is a 1-dim profile histogram.
type Profile1D struct {
h1d H1D // base class
binEntries rcont.ArrayD // number of entries per bin
errMode int32 // Option to compute errors
ymin float64 // Lower limit in Y (if set)
ymax float64 // Upper limit in Y (if set)
sumwy float64 // Total Sum of weight*Y
sumwy2 float64 // Total Sum of weight*Y*Y
binSumw2 rcont.ArrayD // Array of sum of squares of weights per bin
}
func newProfile1D() *Profile1D {
return &Profile1D{
h1d: *newH1D(),
}
}
func (*Profile1D) Class() string {
return "TProfile"
}
func (*Profile1D) RVersion() int16 {
return rvers.Profile
}
// MarshalROOT implements rbytes.Marshaler
func (p *Profile1D) MarshalROOT(w *rbytes.WBuffer) (int, error) {
if w.Err() != nil {
return 0, w.Err()
}
hdr := w.WriteHeader(p.Class(), p.RVersion())
w.WriteObject(&p.h1d)
w.WriteObject(&p.binEntries)
w.WriteI32(p.errMode)
w.WriteF64(p.ymin)
w.WriteF64(p.ymax)
w.WriteF64(p.sumwy)
w.WriteF64(p.sumwy2)
w.WriteObject(&p.binSumw2)
return w.SetHeader(hdr)
}
// UnmarshalROOT implements rbytes.Unmarshaler
func (p *Profile1D) UnmarshalROOT(r *rbytes.RBuffer) error {
if r.Err() != nil {
return r.Err()
}
hdr := r.ReadHeader(p.Class())
if hdr.Vers > rvers.Profile {
panic(fmt.Errorf("rhist: invalid TProfile version=%d > %d", hdr.Vers, rvers.Profile))
}
if hdr.Vers < 7 {
// tested with v7.
panic(fmt.Errorf("rhist: too old TProfile version=%d < 7", hdr.Vers))
}
r.ReadObject(&p.h1d)
r.ReadObject(&p.binEntries)
p.errMode = r.ReadI32()
p.ymin = r.ReadF64()
p.ymax = r.ReadF64()
p.sumwy = r.ReadF64()
p.sumwy2 = r.ReadF64()
r.ReadObject(&p.binSumw2)
r.CheckHeader(hdr)
return r.Err()
}
func init() {
f := func() reflect.Value {
p1d := newProfile1D()
return reflect.ValueOf(p1d)
}
rtypes.Factory.Add("TProfile", f)
}
var (
_ root.Object = (*Profile1D)(nil)
_ rbytes.RVersioner = (*Profile1D)(nil)
_ rbytes.Marshaler = (*Profile1D)(nil)
_ rbytes.Unmarshaler = (*Profile1D)(nil)
)