def make():
demo = QwtPlot()
demo.setCanvasBackground(Qt.white)
demo.setTitle("Histogram")
grid = QwtPlotGrid()
grid.enableXMin(True)
grid.enableYMin(True)
grid.setMajorPen(QPen(Qt.black, 0, Qt.DotLine))
grid.setMinorPen(QPen(Qt.gray, 0, Qt.DotLine))
grid.attach(demo)
histogram = HistogramItem()
histogram.setColor(Qt.darkCyan)
numValues = 20
samples = []
pos = 0.0
for i in range(numValues):
width = 5 + random.randint(0, 4)
value = random.randint(0, 99)
samples.append(QwtIntervalSample(value, QwtInterval(pos, pos + width)))
pos += width
histogram.setData(QwtIntervalSeriesData(samples))
histogram.attach(demo)
demo.setAxisScale(QwtPlot.yLeft, 0.0, 100.0)
demo.setAxisScale(QwtPlot.xBottom, 0.0, pos)
demo.replot()
demo.resize(600, 400)
demo.show()
return demo
def make():
# create a plot with a white canvas
demo = QwtPlot(QwtText("Errorbar Demonstation"))
demo.setCanvasBackground(Qt.white)
demo.plotLayout().setAlignCanvasToScales(True)
grid = QwtPlotGrid()
grid.attach(demo)
grid.setPen(QPen(Qt.black, 0, Qt.DotLine))
# calculate data and errors for a curve with error bars
x = np.arange(0, 10.1, 0.5, np.float)
y = np.sin(x)
dy = 0.2 * abs(y)
# dy = (0.15 * abs(y), 0.25 * abs(y)) # uncomment for asymmetric error bars
dx = 0.2 # all error bars the same size
errorOnTop = False # uncomment to draw the curve on top of the error bars
# errorOnTop = True # uncomment to draw the error bars on top of the curve
curve = ErrorBarPlotCurve(
x=x,
y=y,
dx=dx,
dy=dy,
curvePen=QPen(Qt.black, 2),
curveSymbol=QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.red),
QPen(Qt.black, 2), QSize(9, 9)),
errorPen=QPen(Qt.blue, 2),
errorCap=10,
errorOnTop=errorOnTop,
)
curve.attach(demo)
demo.resize(640, 480)
demo.show()
return demo
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 make():
# create a plot with a white canvas
demo = QwtPlot(QwtText("Curve Demonstation"))
# demo.setCanvasBackground(Qt.white)
# demo.plotLayout().setAlignCanvasToScales(True)
# grid = QwtPlotGrid()
# grid.attach(demo)
# grid.setPen(QPen(Qt.black, 0, Qt.DotLine))
# calculate data and errors for a curve with error bars
x = numpy.zeros(20, numpy.float32)
y = numpy.zeros(20, numpy.float32)
symbol_sizes = numpy.zeros(20, numpy.int32)
symbolList = []
for i in range(20):
x[i] = 1.0 * i
y[i] = 2.0 * i
symbol_sizes[i] = 3 + i
if i % 2 == 0:
symbolList.append(
QwtSymbol(QwtSymbol.UTriangle, QBrush(Qt.black),
QPen(Qt.black), QSize(3 + i, 3 + i)))
else:
symbolList.append(
QwtSymbol(QwtSymbol.DTriangle, QBrush(Qt.red), QPen(Qt.red),
QSize(3 + i, 3 + i)))
curve = QwtPlotCurveSizes(x=x, y=y, symbolSizes=symbol_sizes)
x = x + 10
curve1 = QwtPlotCurveSizes(x=x, y=y, symbolSizes=symbol_sizes)
curve.setSymbol(
QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.black), QPen(Qt.black),
QSize(5, 5)))
curve.setPen(QPen(Qt.blue, 2))
curve1.setSymbol(
QwtSymbol(QwtSymbol.Ellipse, QBrush(Qt.red), QPen(Qt.red),
QSize(10, 10)))
curve1.setPen(QPen(Qt.blue, 2))
curve1.setSymbolList(symbolList)
curve.attach(demo)
curve1.attach(demo)
demo.resize(640, 480)
demo.show()
return demo
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_()
def make():
# create a plot with a white canvas
demo = QwtPlot(QwtText("Errorbar Demonstation"))
demo.setCanvasBackground(Qt.white)
demo.plotLayout().setAlignCanvasToScales(True)
grid = QwtPlotGrid()
grid.attach(demo)
grid.setPen(QPen(Qt.black, 0, Qt.DotLine))
# calculate data and errors for a curve with error bars
x = np.arange(0, 10.1, 0.5, np.float)
y = np.sin(x)
dy = 0.2 * abs(y)
# dy = (0.15 * abs(y), 0.25 * abs(y)) # uncomment for asymmetric error bars
dx = 0.2 # all error bars the same size
errorOnTop = False # uncomment to draw the curve on top of the error bars
# errorOnTop = True # uncomment to draw the error bars on top of the curve
curve = ErrorBarPlotCurve(
x = x,
y = y,
dx = dx,
dy = dy,
curvePen = QPen(Qt.black, 2),
curveSymbol = QwtSymbol(QwtSymbol.Ellipse,
QBrush(Qt.red),
QPen(Qt.black, 2),
QSize(9, 9)),
errorPen = QPen(Qt.blue, 2),
errorCap = 10,
errorOnTop = errorOnTop,
)
curve.attach(demo)
demo.resize(640, 480)
demo.show()
return demo
# -*- coding: utf-8 -*-
__author__ = 'Valeriy'
from qwt.qt.QtGui import QApplication
from qwt import QwtPlot, QwtPlotCurve
import numpy as np
app = QApplication([])
# x = [1,2,3,4,5,6,7,8,9]
# y1 = [3.2, 5.1 ,7.0, 4.24, 4.41, 8.34, 2.21, 5.657, 6.1]
x = []
y1 = []
my_plot = QwtPlot("Two curves")
curve1 = QwtPlotCurve("Curve 1")
my_plot.resize(600, 300)
curve1.setData(x, y1)
curve1.attach(my_plot)
# my_plot.replot()
my_plot.show()
app.exec_()
# SELECT PrepData FROM= Pdata WHERE ((PNameId=2) AND (SNameId = 14) AND (YearId=2012))
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}")
pen.setJoinStyle(Qt.MiterJoin)
symbol = QwtSymbol()
symbol.setPen(pen)
symbol.setBrush(Qt.red)
symbol.setPath(path)
symbol.setPinPoint(QPointF(0.0, 0.0))
symbol.setSize(10, 14)
# --- Test it within a simple plot ---
curve = QwtPlotCurve()
curve_pen = QPen(Qt.blue)
curve_pen.setStyle(Qt.DotLine)
curve.setPen(curve_pen)
curve.setSymbol(symbol)
x = np.linspace(0, 10, 10)
curve.setData(x, np.sin(x))
plot = QwtPlot()
curve.attach(plot)
plot.resize(600, 300)
plot.replot()
plot.show()
plot.grab().save(
osp.join(osp.abspath(osp.dirname(__file__)), "images",
"symbol_path_example.png"))
app.exec_()
class TabGraph(QWidget):
_logname = 'TabGraph'
_log = logging.getLogger(f'{_logname}')
##TabGraph constructor
#
#Create the graph and accompanying buttons
def __init__(self, db, parent=None):
super().__init__(parent)
# self.LOGIN = LOGIN
# self.db = dataBase(self.LOGIN, "Brewing")
self.db = db
self.dataY = np.zeros(0)
self.dataX = np.linspace(0, len(self.dataY), len(self.dataY))
self.count = 0
self.timeLabel = QLabel("Timer:")
self.timeLabel.setAlignment(QtCore.Qt.AlignRight)
self.tempLabel = QLabel("Temp:")
self.tempLabel.setAlignment(QtCore.Qt.AlignRight)
self.targetTemp = QLabel("Set Temp:")
self.targetTime = QLabel("Set Time:")
self.targetTimeLabel = QLabel("Target: ")
self.targetTimeLabel.setAlignment(QtCore.Qt.AlignRight)
self.targetTempLabel = QLabel("Target: ")
self.targetTempLabel.setAlignment(QtCore.Qt.AlignRight)
self.startButton = QPushButton()
self.stopButton = QPushButton()
self.plot = QwtPlot()
self.curve = QwtPlotCurve()
self.curve.attach(self.plot)
self.plot.resize(1000, 1000)
self.plot.replot()
self.plot.show()
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)
yTitle = QwtText()
yTitle.setText(f"Temperature {DEGREESC}")
yTitle.setFont(axisFont)
self.plot.setAxisTitle(self.plot.yLeft, yTitle)
self.tempStatusLED = QLed(self,
onColour=QLed.Green,
offColour=QLed.Red,
shape=QLed.Circle)
self.tempStatusLED.value = False
self.tempStatusLED.setMaximumSize(25, 25)
self.timeStatusLED = QLed(self,
onColour=QLed.Green,
offColour=QLed.Red,
shape=QLed.Circle)
self.timeStatusLED.value = False
self.timeStatusLED.setMaximumSize(25, 25)
self.recipeGrid = QGridLayout()
self.recipeGrid.addWidget(QLabel(f"Recipe:"), 0, 0)
self.recipeGrid.addWidget(QLabel(f"{self.recipedata['recipeName']}"),
0, 1)
self.recipeGrid.addWidget(QHLine(), 1, 0, 1, 2)
self.recipeGrid.addWidget(self.targetTemp)
self.recipeGrid.addWidget(self.targetTempLabel)
self.recipeGrid.addWidget(self.targetTime)
self.recipeGrid.addWidget(self.targetTimeLabel)
self.recipeGrid.addWidget(QHLine(), 4, 0, 1, 2)
self.tempLayout = QHBoxLayout()
# self.tempLayout.addWidget(self.targetTempLabel)
# self.tempLayout.addStretch(10)
self.tempLayout.addWidget(self.tempLabel)
# self.tempLayout.addStretch(10)
self.tempLayout.addWidget(self.tempStatusLED)
self.tempLayout.addStretch(10)
self.timeLayout = QHBoxLayout()
# self.timeLayout.addWidget(self.targetTimeLabel)
# self.timeLayout.addStretch(10)
self.timeLayout.addWidget(self.timeLabel)
# self.timeLayout.addStretch(10)
self.timeLayout.addWidget(self.timeStatusLED)
self.timeLayout.addStretch(10)
self.plotLayout = QVBoxLayout()
self.plotLayout.addLayout(self.timeLayout)
# self.plotLayout.addStretch(10)
self.plotLayout.addLayout(self.tempLayout)
# self.plotLayout.addStretch(10)
self.plotLayout.addWidget(self.plot)
self.buttonLayout = QVBoxLayout()
self.buttonLayout.addWidget(self.startButton)
self.buttonLayout.addWidget(self.stopButton)
self.buttonLayout.addLayout(self.recipeGrid)
self.buttonLayout.addStretch(100)
mainLayout = QHBoxLayout()
mainLayout.addLayout(self.buttonLayout)
mainLayout.addLayout(self.plotLayout)
vLayout = QVBoxLayout(self)
vLayout.addLayout(mainLayout)
self.minuteTimer = QTimer(self)
self.minuteTimer.timeout.connect(lambda: self.addTimer(60))
##Keep track of the timer
def addTimer(self, seconds):
self.count += seconds
##convery the time from seconds to hours/minutes
def display_time(self, seconds, granularity=2):
result = []
for name, count in TIME_INTERVALS:
value = seconds // count
if value:
seconds -= value * count
if value == 1:
name = name.rstrip('s')
result.append("{} {}".format(value, name))
return ', '.join(result[:granularity])
from qwt.qt.QtGui import QApplication
from qwt import QwtPlot, QwtPlotCurve
import numpy as np
app = QApplication([])
x = np.linspace(-10, 10, 500)
y1, y2 = np.cos(x), np.sin(x)
my_plot = QwtPlot("Two curves")
curve1, curve2 = QwtPlotCurve("Curve 1"), QwtPlotCurve("Curve 2")
curve1.setData(x, y1)
curve2.setData(x, y2)
curve1.attach(my_plot)
curve2.attach(my_plot)
my_plot.resize(600, 300)
my_plot.replot()
my_plot.show()
app.exec_()
