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#include <QApplication>
#include <QHBoxLayout>
#include <QWidget>
#include <labplot.h>
int main(int argc, char** argv) {
QApplication app(argc, argv);
auto* mainWidget = new QWidget();
auto* layout = new QHBoxLayout;
mainWidget->setLayout(layout);
// create a worksheet and a plot
auto* worksheet = new Worksheet(QStringLiteral("test"));
// create a plot
auto* plot = new CartesianPlot(QStringLiteral("plot"));
plot->setType(CartesianPlot::Type::FourAxes);
worksheet->addChild(plot);
// Generate some data for f(x) = a*x^2 + b*x + c with additional noise
int count = 10;
double a = 1.27;
double b = 4.375;
double c = -6.692;
auto* x = new Column(QStringLiteral("x"));
auto* y = new Column(QStringLiteral("y"));
for (int i = 0; i < count; ++i) {
x->setValueAt(i, i);
double rand_value = 10 * double(rand()) / double(RAND_MAX);
double value = a * pow(i, 2) + b * i + c + rand_value;
y->setValueAt(i, value);
}
auto* curve = new XYCurve(QStringLiteral("raw data"));
curve->setXColumn(x);
curve->setYColumn(y);
// curve->setLineStyle(XYCurve::LineStyle::NoLine);
// curve->symbol()->setStyle(Symbol::Circle);
plot->addChild(curve);
// perform a fit to the raw data and show it
auto* fitCurve = new XYFitCurve(QStringLiteral("fit"));
// TODO:
fitCurve->recalculate();
plot->addChild(fitCurve);
// add a curve defined via a mathematical equation
auto* eqCurve = new XYEquationCurve(QStringLiteral("eq"));
plot->addChild(eqCurve);
auto data = XYEquationCurve::EquationData();
data.expression1 = QStringLiteral("50*sin(x)");
data.min = QStringLiteral("0.0");
data.max = QStringLiteral("10.0");
eqCurve->setEquationData(data);
eqCurve->recalculate();
// add legend
plot->addLegend();
// create another plot
auto* plot2 = new CartesianPlot(QStringLiteral("plot 2"));
plot2->setType(CartesianPlot::Type::FourAxes);
worksheet->addChild(plot2);
// create some random data and plot a histogram for them
auto* hist = new Histogram(QStringLiteral("histogram"));
auto* random_data = new Column(QStringLiteral("x"));
for (int i = 0; i < 1000; ++i)
random_data->setValueAt(i, double(100 * rand()) / double(RAND_MAX));
hist->setDataColumn(random_data);
plot2->addChild(hist);
// create one more plot
auto* plot3 = new CartesianPlot(QStringLiteral("plot 3"));
plot3->setType(CartesianPlot::Type::FourAxes);
worksheet->addChild(plot3);
// add box plot
auto* boxPlot = new BoxPlot(QStringLiteral("boxplot"));
QVector<const AbstractColumn*> columns{random_data};
boxPlot->setDataColumns(columns);
plot3->addChild(boxPlot);
layout->addWidget(worksheet->view());
mainWidget->show();
return app.exec();
}
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