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groot/{rhist,riofs,rvers}: add r/w support for TProfile{,2D}
Fixes #499
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| // 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" | ||
| ) | ||
|
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||
| // 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(), | ||
| } | ||
| } | ||
|
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| func (*Profile1D) Class() string { | ||
| return "TProfile" | ||
| } | ||
|
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| func (*Profile1D) RVersion() int16 { | ||
| return rvers.Profile | ||
| } | ||
|
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| // MarshalROOT implements rbytes.Marshaler | ||
| func (p *Profile1D) MarshalROOT(w *rbytes.WBuffer) (int, error) { | ||
| if w.Err() != nil { | ||
| return 0, w.Err() | ||
| } | ||
|
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| pos := w.WriteVersion(p.RVersion()) | ||
|
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| if n, err := p.h1d.MarshalROOT(w); err != nil { | ||
| return n, err | ||
| } | ||
|
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| if n, err := p.binEntries.MarshalROOT(w); err != nil { | ||
| return n, err | ||
| } | ||
| w.WriteI32(p.errMode) | ||
| w.WriteF64(p.ymin) | ||
| w.WriteF64(p.ymax) | ||
| w.WriteF64(p.sumwy) | ||
| w.WriteF64(p.sumwy2) | ||
| if n, err := p.binSumw2.MarshalROOT(w); err != nil { | ||
| return n, err | ||
| } | ||
|
|
||
| return w.SetByteCount(pos, p.Class()) | ||
| } | ||
|
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| // UnmarshalROOT implements rbytes.Unmarshaler | ||
| func (p *Profile1D) UnmarshalROOT(r *rbytes.RBuffer) error { | ||
| if r.Err() != nil { | ||
| return r.Err() | ||
| } | ||
|
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| start := r.Pos() | ||
| vers, pos, bcnt := r.ReadVersion(p.Class()) | ||
| if vers > rvers.Profile { | ||
| panic(fmt.Errorf("rhist: invalid TProfile version=%d > %d", vers, rvers.Profile)) | ||
| } | ||
| if vers < 7 { | ||
| // tested with v7. | ||
| panic(fmt.Errorf("rhist: too old TProfile version=%d < 7", vers)) | ||
| } | ||
|
|
||
| if err := p.h1d.UnmarshalROOT(r); err != nil { | ||
| return err | ||
| } | ||
| if err := p.binEntries.UnmarshalROOT(r); err != nil { | ||
| return err | ||
| } | ||
| p.errMode = r.ReadI32() | ||
| p.ymin = r.ReadF64() | ||
| p.ymax = r.ReadF64() | ||
| p.sumwy = r.ReadF64() | ||
| p.sumwy2 = r.ReadF64() | ||
| if err := p.binSumw2.UnmarshalROOT(r); err != nil { | ||
| return err | ||
| } | ||
|
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| r.CheckByteCount(pos, bcnt, start, p.Class()) | ||
| return r.Err() | ||
| } | ||
|
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| func init() { | ||
| f := func() reflect.Value { | ||
| p1d := newProfile1D() | ||
| return reflect.ValueOf(p1d) | ||
| } | ||
| rtypes.Factory.Add("TProfile", f) | ||
| } | ||
|
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||
| var ( | ||
| _ root.Object = (*Profile1D)(nil) | ||
| _ rbytes.RVersioner = (*Profile1D)(nil) | ||
| _ rbytes.Marshaler = (*Profile1D)(nil) | ||
| _ rbytes.Unmarshaler = (*Profile1D)(nil) | ||
| ) |
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