As requested, here's the minimum, working example (below); my apologies that it's so much, but this seems to be an issue that requires overhead structure (specifically the presence of the 2d and 3d axes on two separate tabs at once, but not when 3d or 2d is alone):
import sys, os
pyDir = os.path.dirname(os.path.abspath(__file__)) #python file location
from pyface.qt import QtGui, QtCore
os.environ['ETS_TOOLKIT'] = 'qt4'
import sip
sip.setapi('QString', 2)
import matplotlib
matplotlib.use('Agg')
#matplotlib.use('Qt4Agg')
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QT as NavigationToolbar
from matplotlib.figure import Figure
from matplotlib.widgets import Slider, Button
import mpl_toolkits.axes_grid1
import matplotlib.path as pltPath
import matplotlib.image as mpimg
from matplotlib.ticker import MaxNLocator
from matplotlib import rc
from mpl_toolkits.mplot3d import Axes3D
class P4(QtGui.QWidget):
def __init__(self, parent=None):
super(P4, self).__init__(parent)
P4.layout = QtGui.QGridLayout(self)
P4.layout.setContentsMargins(20,20,20,20)
P4.layout.setSpacing(10)
P4.button_pic1 = QtGui.QPushButton('View Plots', self)
P4.button_pic1.clicked.connect(self.RC_vid1)
P4.layout.addWidget(P4.button_pic1, 2, 8, 1, 1)
P4.button_pic1.show()
def RC_vid1(self):
global PrD_window
try:
PrD_window.close()
except:
pass
PrD_window = PrD_Viz()
PrD_window.show()
################################################################################
class PrD_Viz(QtGui.QMainWindow):
def __init__(self):
super(PrD_Viz, self).__init__()
self.left = 10
self.top = 10
self.initUI()
def initUI(self):
vid_tab2 = ManifoldCanvas(self)
vid_tab3 = PsiCanvas(self)
global vid_tabs
vid_tabs = QtGui.QTabWidget(self)
vid_tabs.addTab(vid_tab2, 'Plot 1')
vid_tabs.addTab(vid_tab3, 'Plot 2')
style = """QTabWidget::tab-bar{
alignment: center;
}"""
self.setStyleSheet(style)
self.setCentralWidget(vid_tabs)
self.setWindowModality(QtCore.Qt.ApplicationModal) #freezes out parent window
self.show()
class ManifoldCanvas(QtGui.QDialog):
pts_orig = []
def __init__(self, parent=None):
super(ManifoldCanvas, self).__init__(parent)
self.figure = Figure(dpi=200)
self.ax = self.figure.add_subplot(111)
self.figure.set_tight_layout(True)
self.canvas = FigureCanvas(self.figure)
self.toolbar = NavigationToolbar(self.canvas, self)
x=[1,5,9]
y=[2,6,10]
ManifoldCanvas.pts_orig = zip(x,y)
for i in ManifoldCanvas.pts_orig:
x,y = i
self.ax.scatter(x,y,s=1,c='#1f77b4')
self.canvas.draw_idle()
layout = QtGui.QGridLayout()
layout.setSizeConstraint(QtGui.QLayout.SetMinimumSize)
layout.addWidget(self.toolbar, 0,0,1,5)
layout.addWidget(self.canvas, 1,0,1,5)
self.setLayout(layout)
class PsiCanvas(QtGui.QDialog):
def __init__(self, parent=None):
super(PsiCanvas, self).__init__(parent)
self.psi1 = [10,11,12]
self.psi2 = [24,19,18]
self.psi3 = [99,90, 105]
# create canvas and plot data:
self.figure = Figure(dpi=200)
self.canvas = FigureCanvas(self.figure)
self.toolbar = NavigationToolbar(self.canvas, self)
self.ax = Axes3D(self.figure)
self.ax.mouse_init()
self.ax.scatter(self.psi1, self.psi2, self.psi3, label='psi_dif', linewidths= .5, edgecolors='k', c='#d62728') #C3
self.canvas.draw_idle() #refresh canvas
layout = QtGui.QGridLayout()
layout.setSizeConstraint(QtGui.QLayout.SetMinimumSize)
layout.addWidget(self.toolbar, 0,0,1,4)
layout.addWidget(self.canvas, 1,0,4,4)
self.setLayout(layout)
################################################################################
# overhead GUI control:
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
tab4 = P4(self)
global tabs
tabs = QtGui.QTabWidget(self)
tabs.resize(250,150)
tabs.addTab(tab4, 'Eigenfunctions')
self.setCentralWidget(tabs)
self.show()
if __name__ == '__main__':
app = QtGui.QApplication.instance()
if app is None:
app = QtGui.QApplication([])
w = MainWindow()
sys.exit(app.exec_())
The plot behaves perfectly on linux and macOS (with no warnings on macOS), but on linux, I'm getting this dreadful paragraph of errors each time the plot is shown in the GUI (which ends up polluting the terminal):
/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/mpl_toolkits/mplot3d/axis3d.py:270: RuntimeWarning: invalid value encountered in true_divide
ax_scale = self.axes.bbox.size / self.figure.bbox.size
Traceback (most recent call last):
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/backends/backend_qt5agg.py", line 176, in __draw_idle_agg
FigureCanvasAgg.draw(self)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py", line 474, in draw
self.figure.draw(self.renderer)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/artist.py", line 61, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/figure.py", line 1159, in draw
func(*args)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/mpl_toolkits/mplot3d/axes3d.py", line 290, in draw
ax.draw(renderer)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/mpl_toolkits/mplot3d/axis3d.py", line 288, in draw
self.label.draw(renderer)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/artist.py", line 61, in draw_wrapper
draw(artist, renderer, *args, **kwargs)
File "/data/ees/anaconda/envs/manifold/lib/python2.7/site-packages/matplotlib/text.py", line 757, in draw
raise ValueError("posx and posy should be finite values")
ValueError: posx and posy should be finite values
I'd like to either suppress this error or fix it; any advice would be tremendously appreciated.
UPDATE: The solution here is to simply remove the toolbars - apparently there is some background competition going on between 2d and 3d toolbars being active at the same time (but not for 2d and 2d toolbars)... weird. I'm leaving my other response present below this one, in case anyone runs into something similar where such a workaround might be helpful.
Here's the workaround for this issue below; please see the comments NEW for everything that was needed for the fix. Basically, this error was happening when both matplotlib's 2d and 3d axes were needed at the same time (albeit on two separate tabs). Now, each plot is constructed live upon tab click.
import sys, os
pyDir = os.path.dirname(os.path.abspath(__file__)) #python file location
from pyface.qt import QtGui, QtCore
os.environ['ETS_TOOLKIT'] = 'qt4'
import sip
sip.setapi('QString', 2)
import matplotlib
matplotlib.use('Agg')
#matplotlib.use('Qt4Agg')
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QT as NavigationToolbar
from matplotlib.figure import Figure
from matplotlib.widgets import Slider, Button
import mpl_toolkits.axes_grid1
import matplotlib.path as pltPath
import matplotlib.image as mpimg
from matplotlib.ticker import MaxNLocator
from matplotlib import rc
from mpl_toolkits.mplot3d import Axes3D
class P4(QtGui.QWidget):
def __init__(self, parent=None):
super(P4, self).__init__(parent)
P4.layout = QtGui.QGridLayout(self)
P4.layout.setContentsMargins(20,20,20,20)
P4.layout.setSpacing(10)
P4.button_pic1 = QtGui.QPushButton('View Plots', self)
P4.button_pic1.clicked.connect(self.RC_vid1)
P4.layout.addWidget(P4.button_pic1, 2, 8, 1, 1)
P4.button_pic1.show()
def RC_vid1(self):
global PrD_window
try:
PrD_window.close()
except:
pass
PrD_window = PrD_Viz()
PrD_window.show()
################################################################################
class PrD_Viz(QtGui.QMainWindow):
currentTab = 0 #NEW
def __init__(self):
super(PrD_Viz, self).__init__()
self.left = 10
self.top = 10
self.initUI()
def initUI(self):
vid_tab2 = ManifoldCanvas(self)
vid_tab3 = PsiCanvas(self)
global vid_tabs
vid_tabs = QtGui.QTabWidget(self)
vid_tabs.addTab(vid_tab2, 'Plot 1')
vid_tabs.addTab(vid_tab3, 'Plot 2')
style = """QTabWidget::tab-bar{
alignment: center;
}"""
self.setStyleSheet(style)
self.setCentralWidget(vid_tabs)
self.setWindowModality(QtCore.Qt.ApplicationModal) #freezes out parent window
if PrD_Viz.currentTab == 1: #NEW
vid_tabs.setCurrentIndex(1) #NEW
#NEW:
vid_tabs.currentChanged.connect(self.onTabChange) #signal for tabs changed via direct click
self.show()
#NEW:
def onTabChange(self, i):
if i == 0:
PrD_Viz.currentTab = 0
self.initUI()
elif i == 1:
PrD_Viz.currentTab = 1
self.initUI()
class ManifoldCanvas(QtGui.QDialog):
pts_orig = []
def __init__(self, parent=None):
super(ManifoldCanvas, self).__init__(parent)
if PrD_Viz.currentTab == 0: #NEW
self.figure = Figure(dpi=200)
self.canvas = FigureCanvas(self.figure)
self.toolbar = NavigationToolbar(self.canvas, self)
self.ax = self.figure.add_subplot(111)
x=[1,5,9,8]
y=[2,6,10,11]
ManifoldCanvas.pts_orig = zip(x,y)
for i in ManifoldCanvas.pts_orig:
x,y = i
self.ax.scatter(x,y,s=1,c='#1f77b4')
self.canvas.draw_idle()
layout = QtGui.QGridLayout()
layout.setSizeConstraint(QtGui.QLayout.SetMinimumSize)
layout.addWidget(self.toolbar, 0,0,1,5)
layout.addWidget(self.canvas, 1,0,1,5)
self.setLayout(layout)
class PsiCanvas(QtGui.QDialog):
def __init__(self, parent=None):
super(PsiCanvas, self).__init__(parent)
if PrD_Viz.currentTab == 1: #NEW
self.psi1 = [10,11,12]
self.psi2 = [24,19,18]
self.psi3 = [99,90, 105]
# create canvas and plot data:
self.figure = Figure(dpi=200)
self.canvas = FigureCanvas(self.figure)
self.toolbar = NavigationToolbar(self.canvas, self)
self.ax = Axes3D(self.figure)
self.ax.mouse_init()
self.ax.scatter(self.psi1, self.psi2, self.psi3, label='psi_dif', linewidths= .5, edgecolors='k', c='#d62728') #C3
self.canvas.draw_idle() #refresh canvas
layout = QtGui.QGridLayout()
layout.setSizeConstraint(QtGui.QLayout.SetMinimumSize)
layout.addWidget(self.toolbar, 0,0,1,4)
layout.addWidget(self.canvas, 1,0,4,4)
self.setLayout(layout)
################################################################################
# overhead GUI control:
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
tab4 = P4(self)
global tabs
tabs = QtGui.QTabWidget(self)
tabs.resize(250,150)
tabs.addTab(tab4, 'Eigenfunctions')
self.setCentralWidget(tabs)
self.show()
if __name__ == '__main__':
app = QtGui.QApplication.instance()
if app is None:
app = QtGui.QApplication([])
w = MainWindow()
sys.exit(app.exec_())