Event gives wrong x coordinate

[Uwe]

Hi,

in the minimal example below I get a wrong x value, the y value is
right.
If I position the mouse in the upper left corner of the plot area, the
event tells me y=0 what is right, but x>0. I have to move the mouse
to the left of the y-axis tick markers to get x = 0.
What am I doing wrong ??

Regards, Uwe


#####################################################


# -*- coding: utf-8 -*-

from PyQt4.QtGui import QVBoxLayout, QDialog

from guiqwt.plot import CurveWidget, PlotManager
from guiqwt.builder import make
from guiqwt.tools import SelectTool

import numpy as np

class TestDialog(QDialog):

def __init__(self):
QDialog.__init__(self)

vlayout = QVBoxLayout()
self.setLayout(vlayout)

self.widget = CurveWidget()
self.curve_item = make.curve([], [], color='b')
self.widget.plot.add_item(self.curve_item)


self.pm = PlotManager(self.widget)
self.pm.add_plot(self.widget.plot)

t = self.pm.add_tool(SelectTool)
self.pm.set_default_tool(t)
t.activate()

def dce(evt):
print evt.pos()
plot = self.curve_item.plot()
print plot.invTransform(self.curve_item.xAxis(), evt.x())
print plot.invTransform(self.curve_item.yAxis(), evt.y())
print

self.widget.plot.mouseReleaseEvent = dce

self.layout().addWidget(self.widget)
self.update_curve()

def update_curve(self):

x = np.arange(0,10,.1)
y = np.sin(np.sin(x))

self.curve_item.set_data(x, y)
self.curve_item.plot().replot()





if __name__ == '__main__':
from PyQt4.QtGui import QApplication

app = QApplication([])
win = TestDialog()

win.show()
app.exec_()

[Till Stensitzki]

Hi Uwe,

did you find a solution to this problem? Cause i have the same
problem.

greetings Till

Post by Uwe
Hi,
in the minimal example below I get a wrong x value, the y value is
right.
If I position the mouse in the upper left corner of the plot area, the
event tells me y=0 what is right, but x>0. I have to move the mouse
to the left of the y-axis tick markers to get x = 0.
What am I doing wrong ??
Regards, Uwe
#####################################################
# -*- coding: utf-8 -*-
from PyQt4.QtGui import QVBoxLayout, QDialog
from guiqwt.plot import CurveWidget, PlotManager
from guiqwt.builder import make
from guiqwt.tools import SelectTool
import numpy as np
        QDialog.__init__(self)
        vlayout = QVBoxLayout()
        self.setLayout(vlayout)
        self.widget = CurveWidget()
        self.curve_item = make.curve([], [], color='b')
        self.widget.plot.add_item(self.curve_item)
        self.pm = PlotManager(self.widget)
        self.pm.add_plot(self.widget.plot)
        t = self.pm.add_tool(SelectTool)
        self.pm.set_default_tool(t)
        t.activate()
            print evt.pos()
            plot = self.curve_item.plot()
            print plot.invTransform(self.curve_item.xAxis(), evt.x())
            print plot.invTransform(self.curve_item.yAxis(), evt.y())
            print
        self.widget.plot.mouseReleaseEvent = dce
        self.layout().addWidget(self.widget)
        self.update_curve()
        x = np.arange(0,10,.1)
        y = np.sin(np.sin(x))
        self.curve_item.set_data(x, y)
        self.curve_item.plot().replot()
    from PyQt4.QtGui import QApplication
    app = QApplication([])
    win = TestDialog()
    win.show()
    app.exec_()