# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2015-03-16 16:41:13
# Node ID 44b87d87610b20e6184e0bd51c0631ede679d4e7
# Parent  649401566a84c8c61c3a9d873464d86536319b0e

implemented "Clear" plot button

diff --git a/mainwindow.cpp b/mainwindow.cpp
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -42,6 +42,9 @@ MainWindow::MainWindow(QWidget *parent) 
     QObject::connect(ui->spYmax, SIGNAL(valueChanged(double)),
                      this, SLOT(onYScaleChanged()));
 
+    QObject::connect(ui->actionClear, SIGNAL(triggered(bool)),
+                     this, SLOT(clearPlot()));
+
     // setup number format buttons
     numberFormatButtons.addButton(ui->rbUint8,  NumberFormat_uint8);
     numberFormatButtons.addButton(ui->rbUint16, NumberFormat_uint16);
@@ -265,6 +268,15 @@ void MainWindow::addData(double data)
     ui->plot->replot();
 }
 
+void MainWindow::clearPlot()
+{
+    dataArray.fill(0.0);
+
+    // update plot
+    curve.setSamples(dataX, dataArray);
+    ui->plot->replot();
+}
+
 void MainWindow::onNumOfSamplesChanged(int value)
 {
     unsigned int oldNum = this->numOfSamples;
diff --git a/mainwindow.h b/mainwindow.h
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -67,6 +67,8 @@ private slots:
     void onNumberFormatButtonToggled(int numberFormatId, bool checked);
     void selectNumberFormat(NumberFormat numberFormatId);
 
+    void clearPlot();
+
 signals:
     void portToggled(bool open);
 };