hi guys, i need help because my matplotlib realtime plot doesn't show the line
between the points.
even if i right '.k-'
thit plot is display in a qwidget in an other code
wirdely that if i put bar it actualy working.
the real time data come from an arduino sensor
that the shape of the data i have to plot:
ser_bytes = ser.readline()
value = float(ser_bytes[0:len(ser_bytes)-2].decode("utf-8"))
that is my code:
class MplWidget(QWidget ):
def __init__( self, parent = None):
QWidget.__init__(self, parent)
self.canvas = FigureCanvas(Figure())
vertical_layout = QVBoxLayout()
vertical_layout.addWidget(self.canvas)
self.canvas.axes = self.canvas.figure.add_subplot(1,1,1)
self.canvas.axes.set_ylim(0,90)
self.canvas.axes.set_xlim(0,100)
self.setLayout(vertical_layout)
def update_graph(self, value):
y = list()
x = list()
y.append(value)
x.append(self.i)
self.i += 1
self.MplWidget.canvas.axes.set_xlim(left=max(0, self.i-40), right=
self.i+60)
self.MplWidget.canvas.axes.bar(x, y,)#'.k-')
self.MplWidget.canvas.axes.set_title('pull')
self.MplWidget.canvas.draw()
thanks for help!
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