void HistPlot::populate()
{
setTitle("Watching TV during a weekend");
setAxisTitle(QwtPlot::yLeft, "Number of People");
setAxisTitle(QwtPlot::xBottom, "Number of Hours");
QwtPlotGrid *grid = new QwtPlotGrid;
grid->enableX(false);
grid->enableY(true);
grid->enableXMin(false);
grid->enableYMin(false);
grid->setMajPen(QPen(Qt::black, 0, Qt::SolidLine));
grid->attach(this);
const double juneValues[] = { 7, 19, 24, 32, 10, 5, 3 };
const double novemberValues[] = { 4, 15, 22, 34, 13, 8, 4 };
Histogram *histogramJune = new Histogram("Summer", Qt::red);
histogramJune->setValues(
sizeof(juneValues) / sizeof(double), juneValues);
histogramJune->attach(this);
Histogram *histogramNovember = new Histogram("Winter", Qt::blue);
histogramNovember->setValues(
sizeof(novemberValues) / sizeof(double), novemberValues);
histogramNovember->attach(this);
}
void TVPlot::populate()
{
QwtPlotGrid *grid = new QwtPlotGrid;
grid->enableX( false );
grid->enableY( true );
grid->enableXMin( false );
grid->enableYMin( false );
grid->setMajorPen( Qt::black, 0, Qt::DotLine );
grid->attach( this );
const double juneValues[] = { 7, 19, 24, 32, 10, 5, 3 };
const double novemberValues[] = { 4, 15, 22, 34, 13, 8, 4 };
Histogram *histogramJune = new Histogram( "Summer", Qt::red );
histogramJune->setValues(
sizeof( juneValues ) / sizeof( double ), juneValues );
histogramJune->attach( this );
Histogram *histogramNovember = new Histogram( "Winter", Qt::blue );
histogramNovember->setValues(
sizeof( novemberValues ) / sizeof( double ), novemberValues );
histogramNovember->attach( this );
}
void HistPlot::setValueHist(const vector<double>& histogram, int origin)
{
setTitle("Histogram");
setAxisTitle(QwtPlot::yLeft, "Count");
setAxisTitle(QwtPlot::xBottom, "Value");
QwtPlotGrid *grid = new QwtPlotGrid;
grid->enableX(false);
grid->enableY(true);
grid->enableXMin(false);
grid->enableYMin(false);
grid->setMajPen(QPen(Qt::darkGreen, 0, Qt::SolidLine));
grid->attach(this);
Histogram *histogramJune = new Histogram("Summer", Qt::red);
histogramJune->setValues(
histogram.size(), &histogram[0], origin);
histogramJune->attach(this);
}
void Histograma::populate(QImage *img)
{
QwtPlotGrid *grid = new QwtPlotGrid;
grid->enableX(false);
grid->enableY(true);
grid->enableXMin(true);
grid->enableYMin(true);
grid->setMajorPen(QPen(Qt::black, 0, Qt::DotLine));
grid->setMinorPen(QPen(Qt::gray, 0, Qt::DotLine));
grid->attach(this);
int cinza, mQtd = 0;
int x, y;
// Quantidade de pontos de 0 a 255
const int pts = 256;
QVector<float> valores(pts);
// inicializa os valores com 0
for (int i = 0; i < pts; i++)
valores[i] = 0.0;
for (x = 0; x < img->width(); x++) {
for (y = 0; y < img->height(); y++) {
cinza = qGray(img->pixel(QPoint(x,y)));
valores[cinza]++;
if (valores[cinza] > mQtd)
mQtd = valores[cinza];
}
}
Histogram *hist = new Histogram("", Qt::black);
hist->setValues(pts, &valores);
hist->attach(this);
this->replot();
}