QTCustomPlot da dati CSV

Un progettino semplice per graficare dati derivanti da un file CSV (si tratta di un progetto satellite di un progetto Android con cui, tramite applicazione, vengono salvati i dati di accelerazione)

Come libreria per plottare i dati ho usato QTCustomPlot per la semplicita' di zoom/pan mentre per la lettura di CSV e' stata impiegata QtCSV

Il codice e' disponibile su GitHub. E' possibile zoom/pan ed avere le coordinate del puntatore

Per impostare QTCustomPlot su QtCreator si devono imporate i file qtcustomplot.cpp/ qtcustomplot.h, si aggiunge al file .pro  QT += printsupport, si trascina sul form un QWidget, tasto destro Promote To e si fa il promote a QtCustomPlot (il metodo e' cambiato rispetto al precedente post https://debiaonoldcomputers.blogspot.com/2013/11/software-per-progetto-force-gauge.html)

======================================================
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "qcustomplot.h"

#include "variantdata.h"
#include "reader.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QString filePath = "/home/luca/ss/7.csv";

    QList<QStringList> readData = QtCSV::Reader::readToList(filePath,";");

    QVector<double> x(readData.size()), y(readData.size());

    //l.resize(readData.size());

  for ( int i = 0; i < readData.size(); ++i )
  {
      x[i] = readData.at(i).value(1).toDouble()-1587149254484;
      y[i] = readData.at(i).value(2).toDouble();

  }
   //Abilita Drag e Zoom
    ui->customPlot->setInteraction(QCP::iRangeDrag,true);
    ui->customPlot->setInteraction(QCP::iRangeZoom,true);


    ui->customPlot->addGraph();
    ui->customPlot->graph(0)->setData(x,y);
    ui->customPlot->graph(0)->setBrush(QBrush(QColor(0, 0, 255, 20)));
    ui->customPlot->graph(0)->setPen(QPen(Qt::blue));
    connect(ui->customPlot,SIGNAL(mousePress(QMouseEvent *)),SLOT (clickedGraph(QMouseEvent*)));
    connect(ui->customPlot,SIGNAL(mouseMove(QMouseEvent *)),SLOT (MouseGraph(QMouseEvent*)));

    ui->customPlot->addGraph();

    ui->customPlot->xAxis->setLabel("Time");
    ui->customPlot->yAxis->setLabel("Acc");

    //double x_min = *std::min_element(x.constBegin(), x.constEnd());
    //double x_max = *std::max_element(x.constBegin(), x.constEnd());
    //double y_min = *std::min_element(y.constBegin(), y.constEnd());
    //double y_max = *std::max_element(y.constBegin(), y.constEnd());
    //ui->customPlot->xAxis->setRange(x_min, x_max);
    //ui->customPlot->yAxis->setRange(y_min, y_max);

    ui->customPlot->rescaleAxes();
    ui->customPlot->replot();
    //qDebug() << ui->customPlot->xAxis->pixelToCoord(mouseEvent->pos().x()) << ui->customPlot->yAxis->pixelToCoord(mouseEvent->pos().y());
}

void MainWindow::clickedGraph(QMouseEvent *event)
{
    QPoint point = event->pos();
    qDebug() << ui->customPlot->xAxis->pixelToCoord(point.x());
    qDebug() << ui->customPlot->yAxis->pixelToCoord(point.y());

}

void MainWindow::MouseGraph(QMouseEvent *event)
{
    QPoint point = event->pos();
    qDebug() << ui->customPlot->xAxis->pixelToCoord(point.x());
    qDebug() << ui->customPlot->yAxis->pixelToCoord(point.y());

    QVariant xi = ui->customPlot->xAxis->pixelToCoord(point.x());
    QVariant yi = ui->customPlot->yAxis->pixelToCoord(point.y());

    ui->xmouse->setText(xi.toString());
    ui->ymouse->setText(yi.toString());


}


MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::on_horizontalSlider_valueChanged(int value)
{
}