class NewGraph():
def __init__(self):
self.curves = []
self.titleFont = QFont("Helvetica", 12, QFont.Bold)
self.axisFont = QFont("Helvetica", 11, QFont.Bold)
def createGraph(self):
self.plot = QwtPlot()
self.plot.resize(1000, 1000)
self.plot.setAxisScaleDraw(QwtPlot.xBottom,
DateTimeTimeScaleDraw(names=False))
self.plot.replot()
self.plot.show()
def createCurve(self, x, y, colour):
curve = QwtPlotCurve()
colour = QColor(colour)
curve.setPen(colour)
curve.setData(x, y)
curve.attach(self.plot)
#self.plot.replot()
self.curves.append(curve)
def removeCurve(self, curveIndex):
self.curves[curveIndex].attach(0)
del self.curves[curveIndex]
def setAxisTitles(self, yAxis, xAxis):
# Create text for graph and axis titles
xTitle = QwtText()
xTitle.setText(xAxis)
xTitle.setFont(self.axisFont)
yTitle = QwtText()
yTitle.setText(yAxis)
yTitle.setFont(self.axisFont)
self.plot.setAxisTitle(self.plot.yLeft, yTitle)
self.plot.setAxisTitle(self.plot.xBottom, xTitle)
def setTitle(self, title):
titleText = QwtText()
titleText.setText(title)
titleText.setFont(self.titleFont)
self.plot.setTitle(titleText)
def main(args):
app = QApplication(args)
demo = QwtPlot()
grid = QwtPlotGrid()
grid.attach(demo)
grid.setPen(QPen(Qt.black, 0, Qt.DotLine))
grid.enableX(True)
grid.enableY(True)
complex_divider = 50.0
myXScale = ComplexScaleDraw(start_value=0.0, end_value=complex_divider)
#print('myXScale', myXScale)
demo.setAxisScaleDraw(QwtPlot.xBottom, myXScale)
m = QwtPlotMarker()
m.attach(demo)
m.setValue(complex_divider, 0.0)
m.setLineStyle(QwtPlotMarker.VLine)
m.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
m.setLinePen(QPen(Qt.black, 2, Qt.SolidLine))
vector_array = numpy.zeros((100, ), numpy.float32)
for i in range(100):
vector_array[i] = i
curve = QwtPlotCurve('example data')
curve.attach(demo)
x_array = numpy.zeros(100, numpy.float32)
y_array = numpy.zeros(100, numpy.float32)
for i in range(100):
x_array[i] = 1.0 * i
y_array[i] = 2.0 * i
curve.setSamples(x_array, y_array)
demo.resize(600, 400)
demo.replot()
demo.show()
# app.setMainWidget(demo)
app.exec_()
class FermentGraph(QWidget):
_logname = 'FermentGraphGeneric'
_log = logging.getLogger(f'{_logname}')
def __init__(self, database, parent=None):
super().__init__(parent)
self.db = database
self.updateTimer = QTimer(self)
self.updateTimer.start(5000)
self.plot = QwtPlot()
self.curve = QwtPlotCurve()
self.curve.attach(self.plot)
self.plot.resize(1000, 1000)
self.plot.show()
self.plot.setAxisScaleDraw(QwtPlot.xBottom, DateTimeTimeScaleDraw())
axisFont = QFont("Helvetica", 11, QFont.Bold)
titleFont = QFont("Helvetica", 12, QFont.Bold)
xTitle = QwtText()
xTitle.setText("Time")
xTitle.setFont(axisFont)
self.plot.setAxisTitle(self.plot.xBottom, xTitle)
self.yTitle = QwtText()
self.yTitle.setFont(axisFont)
self.plot.setAxisTitle(self.plot.yLeft, self.yTitle)
self.titleText = QwtText()
self.titleText.setFont(titleFont)
self.plot.setTitle(self.titleText)
mainLayout = QHBoxLayout()
mainLayout.addWidget(self.plot)
self.setLayout(mainLayout)
self.plot.show()
self.results = []
self.batchID = None
def updatePlot(self, variable):
if self.batchID is not None:
self.db.flushTables()
sql = f"SELECT TimeStamp, {variable} FROM Ferment WHERE BatchID = '{self.batchID}'"
timestamps = []
self.results = []
for data in self.db.custom(sql)[1:]:
timestamps.append(data[0])
self.results.append(data[1])
startTime = timestamps[0]
for i in range(len(timestamps)):
timestamps[i] = (timestamps[i] - startTime).seconds
# self.plot.setAxisScaleDraw(QwtPlot.xBottom, TimeScaleDraw())
self.curve.setData(timestamps, self.results)
self.plot.replot()
self.plot.show()
def changeTank(self, tankID):
self.titleText.setText(f"Fermentation Tank: {tankID}")
