/usr/include/casacore/scimath/Mathematics/StatAcc.tcc is in casacore-dev 2.2.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 | //# StatAcc.cc: Statistics Accumulator
//# Copyright (C) 1996,1999,2001,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//#
//# $Id$
#ifndef SCIMATH_STATACC_TCC
#define SCIMATH_STATACC_TCC
#include <casacore/scimath/Mathematics/StatAcc.h>
#include <casacore/casa/Arrays.h>
#include <casacore/casa/Exceptions/Error.h>
#include <casacore/casa/iostream.h>
#include <casacore/casa/iomanip.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// Constructors:
template<class T>
StatAcc<T>::StatAcc() {reset();}
template<class T>
StatAcc<T>::StatAcc(const StatAcc<T>& that) {
copy(that);
}
// Reset (initialise) the accumulator
template<class T>
void StatAcc<T>::reset ()
{
itsWtot = 0;
itsWsum = 0;
itsWssum = 0;
itsMax = 0;
itsMin = 0;
itsCount = 0;
}
// Copy the attributes of the given accumulator:
template<class T>
void StatAcc<T>::copy (const StatAcc<T>& that)
{
itsWtot = that.itsWtot;
itsWsum = that.itsWsum;
itsWssum = that.itsWssum;
itsMax = that.itsMax;
itsMin = that.itsMin;
itsCount = that.itsCount;
}
// Accumulate an Array of values (see ArrayMath.cc):
template<class T>
void StatAcc<T>::put(const Array<T>& v) {
uInt ntotal = v.nelements();
Bool vDelete;
const T* vStorage = v.getStorage(vDelete);
const T* vs = vStorage;
while (ntotal--) {put1(*vs++,1);}
v.freeStorage(vStorage, vDelete);
}
// Accumulate Array values with individual weights:
template<class T>
void StatAcc<T>::put(const Array<T>& v, const Array<Float>& w) {
uInt ntotal = v.nelements();
if (ntotal != w.nelements()) {
throw(AipsError("StatAcc<T>::put(Array& v, Array& w): v and w have different length"));
}
Bool vDelete,wDelete;
const T* vStorage = v.getStorage(vDelete);
const T* vs = vStorage;
const Float* wStorage = w.getStorage(wDelete);
const Float* ws = wStorage;
while (ntotal--) {put1(*vs++,*ws++);}
v.freeStorage(vStorage, vDelete);
w.freeStorage(wStorage, wDelete);
}
// Accumulate a Block (simple vector) of values:
template<class T>
void StatAcc<T>::put(const Block<T>& v) {
for (uInt i=0; i<v.nelements(); i++) {
put1(v[i],1);
}
}
// Accumulate a Block of values with indivudual weights:
template<class T>
void StatAcc<T>::put(const Block<T>& v, const Block<Float>& w) {
uInt ntotal = v.nelements();
if (ntotal != w.nelements()) {
throw(AipsError("StatAcc<T>::put(Block& v, Block& w): v and w have different length"));
}
for (uInt i=0; i<v.nelements(); i++) {
put1(v[i],w[i]);
}
}
// Private helper routine: accumulate a single weighted value:
template<class T>
void StatAcc<T>::put1(const T v, const Float w)
{
if (w != 0) {
if (itsWtot == 0) { // first time
itsMin = v; // minimum value
itsMax = v; // maximum value
} else {
if (v < itsMin) {itsMin = v;} // minimum value
if (v > itsMax) {itsMax = v;} // maximum value
}
if (w == 1) {
itsWtot++; // total weight (=count)
itsWsum += v; // sum
itsWssum += v*v; // sum of squares
} else {
itsWtot += w; // total weight
itsWsum += w*v; // weighted sum
itsWssum += w*v*v; // weighetd sum of squares
}
itsCount++;
}
}
// Get statistics results:
template<class T>
Double StatAcc<T>::getWtot() const // get total weight
{
return itsWtot;
}
template<class T>
uInt StatAcc<T>::getCount() const // get number of samples
{
return itsCount;
}
template<class T>
Fallible<Double> StatAcc<T>::getMax() const // get minimum value
{
if (itsWtot == 0) {
return Fallible<Double>();
}
return Fallible<Double>(itsMax);
}
template<class T>
Fallible<Double> StatAcc<T>::getMin() const // get minimum value
{
if (itsWtot == 0) {
return Fallible<Double>();
}
return Fallible<Double>(itsMin);
}
template<class T>
Fallible<Double> StatAcc<T>::getMean() const // get mean value
{
if (itsWtot == 0) {
return Fallible<Double>();
}
return Fallible<Double>(itsWsum/itsWtot);
}
template<class T>
Fallible<Double> StatAcc<T>::getRmsAbs() const // get rmsAbs value
{
if (itsWtot == 0) {
return Fallible<Double>();
}
return Fallible<Double>(sqrt(itsWssum/itsWtot));
}
template<class T>
Fallible<Double> StatAcc<T>::getRms() const // get rms w.r.t. the mean
{
if (getVariance().isValid()) {
Double ms = getVariance();
if (ms >= 0) {
return Fallible<Double>(sqrt(ms)); // valid
} else {
return Fallible<Double>(0); // .....?
}
} else {
return Fallible<Double>(); //
}
}
template<class T>
Fallible<Double> StatAcc<T>::getVariance() const // get variance
{
if (getMean().isValid()) {
Double mean = getMean();
return Fallible<Double>(itsWssum/itsWtot - mean*mean);
} else {
return Fallible<Double>();
}
}
// Operator=: this = that
template<class T>
StatAcc<T>& StatAcc<T>::operator= (const StatAcc<T>& that)
{
copy(that);
return *this;
}
// Accumulators can be added. The result is the same as if the values
// accumulated in `that' were accumulated in `this'.
// Operator+=: this = this + that
template<class T>
StatAcc<T>& StatAcc<T>::operator+= (const StatAcc<T>& that)
{
if (that.itsWtot != 0) {
if (itsWtot != 0) {
if (that.itsMax > itsMax) {itsMax = that.itsMax;}
if (that.itsMin < itsMin) {itsMin = that.itsMin;}
} else {
itsMin = that.itsMin;
itsMax = that.itsMax;
}
itsWtot += that.itsWtot;
itsCount += that.itsCount;
itsWsum += that.itsWsum;
itsWssum += that.itsWssum;
}
return *this;
}
// Operator+: new = this + that
template<class T>
StatAcc<T> StatAcc<T>::operator+ (const StatAcc<T>& that)
{
StatAcc<T> s(*this); // construct a copy of this accumulator
return s += that; // add the given accumulator to the copy
}
// Print one-line summary of the accumulated statistics.
template<class T>
void StatAcc<T>::printSummaryLine (ostream& os, const String& caption) const
{
ios::fmtflags flags = os.flags(); // save current setting
uInt p = 4; // precision
os.setf(ios::right,ios::adjustfield);
if (itsWtot != 0) {
os << setprecision(p) << setw(p+3) << getWtot();
os << setprecision(p) << setw(p+3) << getCount();
os << setprecision(p) << setw(p+3) << getMean();
os << setprecision(p) << setw(p+3) << getRms();
os << setprecision(p) << setw(p+3) << getMin();
os << setprecision(p) << setw(p+3) << getMax();
} else {
os << setprecision(p) << setw(p+3) << getWtot();
os << setw(5*(p+3)) << " no values accumulated " ;
}
os << " : " << caption << endl; // caption
os.flags(flags); // restore original setting
}
// Print header for SummaryLine:
template<class T>
void StatAcc<T>::printSummaryLineHeader (ostream& os, const String& caption) const
{
ios::fmtflags flags = os.flags(); // save current setting
uInt p = 4; // precision
// print one-line header
os.setf(ios::right,ios::adjustfield);
// os << " " << endl; // skip line (?)
os << setw(p+3) << "wtot";
os << setw(p+3) << "npts";
os << setw(p+3) << "mean";
os << setw(p+3) << "rms";
os << setw(p+3) << "min";
os << setw(p+3) << "max";
os << " : " << caption << endl;
os.flags(flags); // restore original setting
}
// Print multi-line summary (list) of the accumulated statistics.
template<class T>
void StatAcc<T>::printSummaryList (ostream& os, const String& caption) const
{
ios::fmtflags flags = os.flags(); // save current setting
os << " " << endl; // skip line
os << " StatAcc summary for: " << caption << endl;
uInt p = 12; // precision
os << setprecision(p);
os << " Wtot= " << setw(p+3) << getWtot() << endl;
os << " Npts= " << setw(p+3) << getCount() << endl;
os << " Mean= " << setw(p+3) << getMean() << endl;
os << " Min= " << setw(p+3) << getMin() << endl;
os << " Max= " << setw(p+3) << getMax() << endl;
os << " Rms= " << setw(p+3) << getRms() << endl;
os << " Variance=" << setw(p+3) << getVariance() << endl;
os << " RmsAbs= " << setw(p+3) << getRmsAbs() << endl;
os.flags(flags); // restore original setting
}
//**********************************************************************
} //# NAMESPACE CASACORE - END
#endif
|