I am trying to make a QT interface. I am quite new to qt and python. I used QT creator to make a matplotlib widget (python(x,y)) and a slider, and and I would like it to change with the value of the slider. I tried the different solution I found (here for exemple) and it didn't work. Could someone explain me what I am doing wrong ? Here is my code:
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from numpy import *
import os,sys
os.chdir('C:\\somepath')
from testgraph import *
class graph(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self)
self.ui=Ui_Form()
self.ui.setupUi(parent)
#Ici, personnalisez vos widgets si nécessaire
#Réalisez les connexions supplémentaires entre signaux et slots
self.ui.horizontalSlider.setRange(10, 100)
self.ui.horizontalSlider.valueChanged.connect(self.plotgraph)
self.fig = self.ui.mplwidget.axes
self.fig.set_xlim(1,100)
self.fig.set_ylabel('plof')
self.fig.set_xlabel('plif')
self.fig.set_ylim(-1,1)
x = arange(1,100)
self.line = self.fig.plot(x,sin(x*pi/10))
#self.ui.mplwidget.show()
def plotgraph(self):
T1=self.ui.horizontalSlider.value()
print(str(T1))
self.fig.clear() #clear the previous plot
self.fig.plot(x,sin(x*pi/T1))
self.ui.mplwidget.figure.canvas.draw() #redraw the canvas
#self.ui.mplwidget.figure.canvas.draw()
#self.ui.mplwidget.figure.canvas.update()
#self.line.set_ydata(sin(x*pi/T1))
#self.fig.plot(x,)
#self.fig.canvas.update()
#
def main(args):
a=QApplication(args)
f=QWidget()
c=graph(f)
f.show()
r=a.exec_()
return r
if __name__=="__main__":
main(sys.argv)#include <QApplication>
and here is the testgraph from qtdesigner:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'testgraph.ui'
#
# Created: Thu Aug 24 16:56:29 2017
# by: PyQt4 UI code generator 4.11.3
#
# WARNING! All changes made in this file will be lost!
from PyQt4 import QtCore, QtGui
from matplotlibwidget import MatplotlibWidget
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(1181, 837)
self.verticalLayout = QtGui.QVBoxLayout(Form)
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.mplwidget = MatplotlibWidget(Form)
self.mplwidget.setObjectName(_fromUtf8("mplwidget"))
self.verticalLayout.addWidget(self.mplwidget)
self.horizontalSlider = QtGui.QSlider(Form)
self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
self.horizontalSlider.setObjectName(_fromUtf8("horizontalSlider"))
self.verticalLayout.addWidget(self.horizontalSlider)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(_translate("Form", "Form", None))
The value of the slider is printed, but none of the option I tried worked to refresh my plot. I am stuck here.
