1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2007 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #ifndef LEMON_RANDOM_H |
---|
20 | #define LEMON_RANDOM_H |
---|
21 | |
---|
22 | #include<iostream> |
---|
23 | #include<fstream> |
---|
24 | #include<string> |
---|
25 | |
---|
26 | #include <lemon/dim2.h> |
---|
27 | |
---|
28 | ///\ingroup misc |
---|
29 | ///\file |
---|
30 | ///\brief Measure a Distribution |
---|
31 | /// |
---|
32 | ///\todo Needs lot more docs |
---|
33 | /// |
---|
34 | |
---|
35 | |
---|
36 | namespace lemon { |
---|
37 | |
---|
38 | ///Measure a distribution |
---|
39 | class DistLog |
---|
40 | { |
---|
41 | std::vector<int> _dist; |
---|
42 | double _lo,_up; |
---|
43 | int _count; |
---|
44 | bool _cut; |
---|
45 | public: |
---|
46 | ///\e |
---|
47 | Dist(double lo,double up,int gr,bool cut=true) |
---|
48 | : _dist(gr,0),_lo(lo),_up(up),_count(0),_cut(cut) {} |
---|
49 | ///\e |
---|
50 | void operator()(double v) |
---|
51 | { |
---|
52 | if(_cut) { |
---|
53 | if(_lo<=v && v<_up) |
---|
54 | _dist[int((v-_lo)/(_up-_lo)*_dist.size())]++; |
---|
55 | } |
---|
56 | else { |
---|
57 | _dist[std::max(0,std::min(int(_dist.size())-1, |
---|
58 | int((v-_lo)/(_up-_lo)*_dist.size()) |
---|
59 | ))]++; |
---|
60 | } |
---|
61 | _count++; |
---|
62 | } |
---|
63 | ///\e |
---|
64 | void dump(std::ostream& os=std::cout) |
---|
65 | { |
---|
66 | for(int i=0;i<_dist.size();i++) |
---|
67 | os << _lo+(i+0.5)*(_up-_lo)/_dist.size() << ' ' |
---|
68 | << double(_dist[i])/_count << std::endl; |
---|
69 | } |
---|
70 | ///\e |
---|
71 | void dump(const std::string& file_name) |
---|
72 | { |
---|
73 | dump(std::ofstream(file_name.c_str())); |
---|
74 | } |
---|
75 | }; |
---|
76 | |
---|
77 | ///Measure a two dimensional distribution |
---|
78 | class DistLog2 |
---|
79 | { |
---|
80 | public: |
---|
81 | typedef dim2::Point<double> Point; |
---|
82 | private: |
---|
83 | std::vector<int> _dist; |
---|
84 | int _gr; |
---|
85 | Point _lo,_up; |
---|
86 | int _count; |
---|
87 | bool _cut; |
---|
88 | public: |
---|
89 | ///\e |
---|
90 | Dist2(Point a,Point b,int gr,bool cut=true) : |
---|
91 | _dist(gr*gr,0),_gr(gr), |
---|
92 | _lo(a),_up(b),_count(0),_cut(cut) {} |
---|
93 | ///\e |
---|
94 | Dist2(double lox,double upx,double loy,double upy,int gr,bool cut=true) : |
---|
95 | _dist(gr*gr,0),_gr(gr), |
---|
96 | _lo(Point(lox,loy)),_up(Point(upx,upy)),_count(0),_cut(cut) {} |
---|
97 | ///\e |
---|
98 | void operator()(Point v) |
---|
99 | { |
---|
100 | if(_cut) |
---|
101 | { |
---|
102 | if(v.x>=_lo.x && v.x<_up.x && v.y>=_lo.y && v.y<_up.y) |
---|
103 | _dist[int((v.x-_lo.x)/(_up.x-_lo.x)*_gr)*_gr+ |
---|
104 | int((v.y-_lo.y)/(_up.y-_lo.y)*_gr)]++; |
---|
105 | } |
---|
106 | else { |
---|
107 | _dist[std::max(0,std::min(_gr-1, |
---|
108 | int((v.x-_lo.x)/(_up.x-_lo.x)*_gr) |
---|
109 | ))*_gr+ |
---|
110 | std::max(0,std::min(_gr-1, |
---|
111 | int((v.y-_lo.y)/(_up.y-_lo.y)*_gr) |
---|
112 | )) |
---|
113 | ]++; |
---|
114 | } |
---|
115 | _count++; |
---|
116 | } |
---|
117 | ///\e |
---|
118 | void dump(std::ostream& os=std::cout) |
---|
119 | { |
---|
120 | for(int i=0;i<_gr;i++) |
---|
121 | { |
---|
122 | for(int j=0;j<_gr;j++) |
---|
123 | os << _lo.x+(i+0.5)*(_up.x-_lo.x)/_gr << ' ' |
---|
124 | << _lo.y+(j+0.5)*(_up.y-_lo.y)/_gr << ' ' |
---|
125 | << double(_dist[i*_gr+j])/_count << std::endl; |
---|
126 | os << std::endl; |
---|
127 | } |
---|
128 | } |
---|
129 | ///\e |
---|
130 | void dump(const std::string& file_name) |
---|
131 | { |
---|
132 | dump(std::ofstream(file_name.c_str())); |
---|
133 | } |
---|
134 | }; |
---|
135 | } |
---|
136 | |
---|
137 | #endif |
---|