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//# LatticeHistSpecialize.cc: Defines non-templated classes for LatticeHistograms
//# Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
//# 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
//#
//# $Id$
//
#include <casacore/lattices/LatticeMath/LatticeHistSpecialize.h>
#include <casacore/lattices/LatticeMath/LatticeStatsBase.h>
#include <casacore/lattices/LatticeMath/LattStatsSpecialize.h>
#include <casacore/casa/Arrays/ArrayMath.h>
#include <casacore/casa/Logging/LogIO.h>
#include <casacore/scimath/Functionals/Gaussian1D.h>
#include <casacore/casa/BasicSL/Complex.h>
#include <casacore/casa/BasicSL/Constants.h>
#include <casacore/casa/BasicMath/Math.h>
#include <casacore/lattices/LatticeMath/LatticeStatsBase.h>
#include <casacore/casa/System/ProgressMeter.h>
#include <casacore/casa/System/PGPlotter.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
uInt LatticeHistSpecialize::bin(Float datum, Float dmin, Float width, uInt nBins)
{
return min(nBins-1, uInt((datum-dmin)/width));
}
void LatticeHistSpecialize::process(
const Complex* pInData, const Bool* pInMask,
Block<Complex>* pHist, const Vector<Complex>& clip,
Complex binWidth, uInt offset,
uInt nrval, uInt nBins,
uInt dataIncr, uInt maskIncr
) {
Complex datum, useIt;
uInt rbin;
uInt index;
//
if (pInMask==0) {
for (uInt i=0; i<nrval; i++) {
datum = *pInData;
useIt = LattStatsSpecialize::usePixelInc(clip(0), clip(1), datum);
if (real(useIt) > 0.5) {
rbin = bin(real(datum), real(clip(0)), real(binWidth), nBins);
//
index = rbin + offset;
Complex& hist1 = (*pHist)[index];
/// hist1.real() += 1.0;
hist1 += Complex(1.0, 0.0);
}
if (imag(useIt) > 0.5) {
rbin = bin(imag(datum), imag(clip(0)), imag(binWidth), nBins);
index = rbin + offset;
Complex& hist2 = (*pHist)[index];
/// hist2.imag() += 1.0;
hist2 += Complex(0.0, 1.0);
}
pInData += dataIncr;
}
} else {
for (uInt i=0; i<nrval; i++) {
datum = *pInData;
if (*pInMask) {
useIt = LattStatsSpecialize::usePixelInc(clip(0), clip(1), datum);
if (real(useIt) > 0.5) {
rbin = bin(real(datum), real(clip(0)), real(binWidth), nBins);
index = rbin + offset;
Complex& hist1 = (*pHist)[index];
/// hist1.real() += 1.0;
hist1 += Complex(1.0, 0.0);
}
if (imag(useIt) > 0.5) {
rbin = bin(imag(datum), imag(clip(0)), imag(binWidth), nBins);
index = rbin + offset;
Complex& hist2 = (*pHist)[index];
/// hist2.imag() += 1.0;
hist2 += Complex(0.0, 1.0);
}
}
pInData += dataIncr;
pInMask += maskIncr;
}
}
}
void LatticeHistSpecialize::makeGauss(uInt& nGPts, Float& gMax,
Vector<Float>& gX, Vector<Float>& gY,
Float dMean, Float dSigma,
Float dSum, Float xMin,
Float xMax, Float binWidth,
Bool doCumu, Bool doLog)
//
// Make overlay Gaussian with the given parameters
//
{
// 100 points please
nGPts = 100;
gX.resize(nGPts);
gY.resize(nGPts);
// Set up Gaussian functional
const Float gaussAmp = dSum * C::_1_sqrt2 * C::_1_sqrtpi / dSigma;
const Float gWidth = sqrt(8.0*C::ln2) * dSigma;
const Gaussian1D<Float> gauss(gaussAmp, dMean, gWidth);
// Generate Gaussian.
Float dgx = (xMax - xMin) / Float(nGPts);
Float xx;
uInt i;
for (i=0,xx=xMin,gMax=0.0; i<nGPts; i++) {
gX(i) = xx;
gY(i) = gauss(xx);
//
gMax = max(gMax, gY(i));
xx += dgx;
}
// Make cumulative if desired
const Float scale = dgx / binWidth;
if (doCumu) makeCumulative (gY, gMax, nGPts, scale);
// Take log if desired
if (doLog) makeLogarithmic (gY, gMax, nGPts);
}
void LatticeHistSpecialize::makeCumulative (Vector<Complex>& counts,
Complex& yMax, uInt nBins,
Float scale)
//
// Code is the same as Float. Could really make this
// templated, but still need access to this function
// from IHS, so leave it here
//
{
counts(0) = scale * counts(0);
for (uInt i=1; i<nBins; i++) {
counts(i) = counts(i)*scale + counts(i-1);
}
yMax = counts(nBins-1);
}
void LatticeHistSpecialize::makeLogarithmic (Vector<Complex>& counts,
Complex& yMax,
uInt nBins)
{
yMax = 0.0;
for (uInt i=0; i<nBins; i++) {
/// if (real(counts(i)) > 0.0) counts(i).real() = log10(counts(i).real());
/// if (imag(counts(i)) > 0.0) counts(i).imag() = log10(counts(i).imag());
if (real(counts(i)) > 0.0) {
counts(i) = Complex(log10(counts(i).real()), counts(i).imag());
}
if (imag(counts(i)) > 0.0) {
counts(i) = Complex(counts(i).real(), log10(counts(i).imag()));
}
//
/// if (real(counts(i)) > real(yMax)) yMax.real() = real(counts(i));
/// if (imag(counts(i)) > imag(yMax)) yMax.imag() = imag(counts(i));
if (real(counts(i)) > real(yMax)) {
yMax = Complex(real(counts(i)), yMax.imag());
}
if (imag(counts(i)) > imag(yMax)) {
yMax = Complex(yMax.real(), imag(counts(i)));
}
}
}
Float LatticeHistSpecialize::mul(Float v1, Float v2)
{
return v1*v2;
}
Complex LatticeHistSpecialize::mul(Complex v1, Complex v2)
{
return Complex(real(v1)*real(v2),imag(v1)*imag(v2));
}
void LatticeHistSpecialize::plot(PGPlotter& plotter, Bool doGauss, Bool doCumu, Bool doLog,
Float linearSum, Float yMax,
Float binWidth, const Vector<Float>& values,
const Vector<Float>& counts, const Vector<Float>& stats,
uInt label, uInt ci, Bool page)
//
// The histogram is already in its desired form - linear, log, cumu
// yMax is in that form too.
//
// label == 0 -> Both
// 1 Bottom/left
// 2 Top/right
//
{
Float xMin = stats(LatticeStatsBase::MIN);
Float xMax = stats(LatticeStatsBase::MAX);
Float yMin = 0.0;
Float yMax2 = yMax;
//
Vector<Float> gX, gY;
if (doGauss) {
uInt nGPts = 0;
Float gMax;
makeGauss (nGPts, gMax, gX, gY, stats(LatticeStatsBase::MEAN),
stats(LatticeStatsBase::SIGMA), linearSum,
xMin, xMax, binWidth, doCumu, doLog);
yMax2 = max(yMax2, gMax);
}
// Stretch extrema by 5%
LatticeStatsBase::stretchMinMax(xMin, xMax);
LatticeStatsBase::stretchMinMax(yMin, yMax2);
//
if (page) plotter.page();
plotter.bbuf();
plotter.swin(xMin, xMax, 0.0, yMax2);
plotter.sci(ci);
if (label==0) {
plotter.box("BCNST", 0.0, 0, "BCNST", 0.0, 0);
} else if (label==1) {
plotter.box("BNST", 0.0, 0, "BNST", 0.0, 0);
} else if (label==2) {
plotter.box("CMST", 0.0, 0, "CMST", 0.0, 0);
}
//
plotHist (values, counts, plotter);
if (doGauss) plotter.line (gX, gY);
// Label
plotter.sci(1);
if (doCumu) {
if (doLog) {
plotter.lab("Pixel Value", "Log10 (Cumulative Counts)", "");
} else {
plotter.lab("Pixel Value", "Cumulative Counts", "");
}
} else {
if (doLog) {
plotter.lab("Pixel Value", "Log10 (Counts)", "");
} else {
plotter.lab("Pixel Value", "Counts", "");
}
}
plotter.ebuf();
}
void LatticeHistSpecialize::plot(PGPlotter& plotter, Bool doGauss, Bool doCumu, Bool doLog,
Complex linearSum, Complex yMax,
Complex binWidth, const Vector<Complex>& values,
const Vector<Complex>& counts, const Vector<Complex>& stats,
uInt, uInt, Bool)
//
// The histogram is already in its desired form - linear, log, cumu
// yMax is in that form too.
//
{
plot(plotter, doGauss, doCumu, doLog, real(linearSum), real(yMax),
real(binWidth), real(values), real(counts), real(stats), 1, 1, True);
plot(plotter, doGauss, doCumu, doLog, imag(linearSum), imag(yMax),
imag(binWidth), imag(values), imag(counts), imag(stats), 2, 7, False);
}
void LatticeHistSpecialize::plotHist (const Vector<Float>& x,
const Vector<Float>& y,
PGPlotter& plotter)
{
const Float width = (x(1) - x(0)) / 2.0;
Float xx, yy;
for (uInt i=0; i<x.nelements(); i++) {
xx = x(i) - width;
yy = y(i);
//
plotter.move (xx, 0.0);
plotter.draw (xx, yy);
plotter.move (xx, yy);
xx = x(i) + width;
plotter.draw (xx, yy);
//
plotter.move (xx, yy);
plotter.draw (xx, 0.0);
}
}
Float LatticeHistSpecialize::setBinWidth (Float dmin, Float dmax, uInt nBins)
{
Float width = (dmax - dmin) / Float(nBins);
if (near(width,0.0f,1e-6)) {
width = 0.001;
}
return width;
}
Complex LatticeHistSpecialize::setBinWidth (Complex dmin, Complex dmax, uInt nBins)
{
return Complex(setBinWidth(real(dmin), real(dmax), nBins),
setBinWidth(imag(dmin), imag(dmax), nBins));
}
} //# NAMESPACE CASACORE - END
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