diff --git a/GUI_main.py b/GUI_main.py
index e1fecc12cb0c395c6dc5971fcdadfc4076690fa9..21f14d1e553376540e168390c8f14529b27c81b9 100644
--- a/GUI_main.py
+++ b/GUI_main.py
@@ -61,7 +61,7 @@ import skimage
#from openpyxl import Workbook
# Import everything for the Graphical User Interface from the PyQt5 library.
-from PyQt5.QtWidgets import (QApplication, QMainWindow, QDialog, QFileDialog,
+from PyQt5.QtWidgets import (QApplication, QMainWindow, QDialog,
QMessageBox, QPushButton, QCheckBox, QAction, QStatusBar, QLabel)
from PyQt5 import QtGui
@@ -201,8 +201,8 @@ class App(QMainWindow):
self.button_add_region = QPushButton("Add region")
self.buttonlist.append(self.button_add_region)
- self.button_savemask = QPushButton("Save Mask")
- self.buttonlist.append(self.button_savemask)
+# self.button_savemask = QPushButton("Save Mask")
+# self.buttonlist.append(self.button_savemask)
self.button_drawmouse = QPushButton('Brush')
self.buttonlist.append(self.button_drawmouse)
@@ -228,12 +228,6 @@ class App(QMainWindow):
self.button_cnn = QPushButton('Launch CNN')
self.buttonlist.append(self.button_cnn)
- self.button_threshold = QCheckBox('Threshold prediction')
- self.buttonlist.append(self.button_threshold)
-
- self.button_segment = QCheckBox('Segment')
- self.buttonlist.append(self.button_segment)
-
self.button_cellcorespondance = QPushButton('Tracking')
self.buttonlist.append(self.button_cellcorespondance)
@@ -295,7 +289,7 @@ class App(QMainWindow):
self.fileMenu = menubar.addMenu('File')
self.saveactionmenu = QAction('Save')
self.fileMenu.addAction(self.saveactionmenu)
- self.saveactionmenu.triggered.connect(self.ButtonSaveMask)
+ self.saveactionmenu.triggered.connect(self.SaveMask)
# hide the toolbar and instead of the original buttons of matplotlib,
# QPushbuttons are used and are connected to the functions of the toolbar
@@ -313,17 +307,6 @@ class App(QMainWindow):
self.show()
-
- def mousePressEvent(self, QMouseEvent):
- """this function is implemented just to have the QLineButtons of the
- change time index button, setthreshold button and the setsegmentation
- button out of focus when the user clicks somewhere
- on the gui. (to unfocus the buttons)
- """
- self.button_timeindex.clearFocus()
- if self.button_SetSegmentation.isEnabled():
- self.button_SetSegmentation.clearFocus()
-
# -----------------------------------------------------------------------------
# FUNCTIONS LINKED TO NAVIGATION
@@ -356,31 +339,9 @@ class App(QMainWindow):
"""
self.Nvgtlbar.zoom()
- if (self.button_zoom.isChecked() and not(self.button_segment.isChecked()
- or self.button_threshold.isChecked())):
+ if (self.button_zoom.isChecked()):
self.Disable(self.button_zoom)
- elif self.button_zoom.isChecked() and self.button_segment.isChecked():
- self.Disable(self.button_zoom)
- self.button_segment.setEnabled(True)
-
- elif self.button_zoom.isChecked() and self.button_threshold.isChecked():
- self.Disable(self.button_zoom)
- self.button_threshold.setEnabled(True)
-
- elif self.button_zoom.isChecked() == False and self.button_segment.isChecked():
- self.button_pan.setEnabled(True)
- self.button_home.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
- self.EnableCorrectionsButtons()
-
- elif self.button_zoom.isChecked() == False and self.button_threshold.isChecked():
- self.button_pan.setEnabled(True)
- self.button_home.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
-
else:
self.Enable(self.button_zoom)
@@ -402,7 +363,6 @@ class App(QMainWindow):
self.Nvgtlbar.back()
-
def ForwardTlbar(self):
"""
It calls the forward function of the matplotlib toolbar which sets the
@@ -441,33 +401,8 @@ class App(QMainWindow):
self.Nvgtlbar.pan()
- if (self.button_pan.isChecked() and not(self.button_segment.isChecked()
- or self.button_threshold.isChecked())):
- self.Disable(self.button_pan)
-
- elif self.button_pan.isChecked() and self.button_segment.isChecked():
- self.Disable(self.button_pan)
- self.button_segment.setEnabled(True)
-
- elif self.button_pan.isChecked() and self.button_threshold.isChecked():
+ if (self.button_pan.isChecked()):
self.Disable(self.button_pan)
- self.button_threshold.setEnabled(True)
-
- elif not(self.button_pan.isChecked()) and self.button_segment.isChecked():
-
- self.button_zoom.setEnabled(True)
- self.button_home.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
-
- self.EnableCorrectionsButtons()
-
- elif not(self.button_pan.isChecked()) and self.button_threshold.isChecked():
- self.button_zoom.setEnabled(True)
- self.button_home.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
-
else:
self.Enable(self.button_pan)
@@ -674,26 +609,16 @@ class App(QMainWindow):
"""
if self.button_hide_show.isChecked():
self.button_cnn.setVisible(True)
- self.button_segment.setVisible(True)
- self.button_savesegmask.setVisible(True)
- self.button_threshold.setVisible(True)
- self.button_savethresholdmask.setVisible(True)
- self.button_SetSegmentation.setVisible(True)
else:
self.button_cnn.setVisible(False)
- self.button_segment.setVisible(False)
- self.button_savesegmask.setVisible(False)
- self.button_threshold.setVisible(False)
- self.button_savethresholdmask.setVisible(False)
- self.button_SetSegmentation.setVisible(False)
def LaunchBatchPrediction(self):
"""This function is called whenever the button Launch CNN is pressed.
It allows to run the neural network over a time range and selected
field of views.
-
+
It creates a dialog window with two entries, that define the time range
and a list where the user can select the desired fields of view.
@@ -1014,44 +939,7 @@ class App(QMainWindow):
self.Enable(self.button_cellcorespondance)
self.button_cellcorespondance.setChecked(False)
self.ClearStatusBar()
-
-
- def SegmentBoxCheck(self):
- if self.button_segment.isChecked():
- self.Disable(self.button_segment)
- self.EnableCorrectionsButtons()
- self.m.SegmentedMask = self.reader.LoadSeg(self.Tindex, self.FOVindex)
- self.m.tempplotmask = self.m.plotmask.copy()
- self.m.plotmask = self.m.SegmentedMask.copy()
- self.m.currmask.set_data((self.m.SegmentedMask%10 + 1)*(self.m.SegmentedMask != 0))
- self.m.ax.draw_artist(self.m.currplot)
- self.m.ax.draw_artist(self.m.currmask)
- self.m.update()
- self.m.flush_events()
-
- # update the graph
- self.button_SetSegmentation.setEnabled(True)
- self.button_savesegmask.setEnabled(True)
-
- else:
- self.m.SegmentedMask = self.m.plotmask.copy()
- self.m.plotmask = self.m.tempplotmask.copy()
- self.m.updatedata()
- self.button_SetSegmentation.setEnabled(False)
- self.button_savesegmask.setEnabled(False)
- self.Enable(self.button_segment)
-
-
- def SegmentThresholdedPredMask(self):
- # update the plots to display the segmentation view
- segparamvalue = int(self.button_SetSegmentation.text())
- self.m.plotmask = self.reader.Segment(segparamvalue, self.Tindex,self.FOVindex)
- self.m.currmask.set_data((self.m.plotmask%10 + 1)*(self.m.plotmask != 0))
- self.m.ax.draw_artist(self.m.currplot)
- self.m.ax.draw_artist(self.m.currmask)
- self.m.update()
- self.m.flush_events()
-
+
def ButtonSaveSegMask(self):
"""saves the segmented mask
@@ -1208,8 +1096,7 @@ class App(QMainWindow):
# displaying the instructions on the statusbar
self.WriteStatusBar((
- 'Select one cell using the left click '
- 'and then enter the desired value in the dialog box.'))
+ 'Left-click to select cell, right-click to abort.'))
# disables all the buttons
self.Disable(self.button_changecellvalue)
@@ -1262,8 +1149,6 @@ class App(QMainWindow):
#reads the new value to set and converts it from str to int
value = int(dlg.entry1.text())
- # self.m.plotmask[newy, newx] the value selected by the user
- # self.m.plotmask == self.m.plotmask[newy, newx]
# gives the coordinates where it is equal to the value
# selected by the user. And it replaces it with the new
# value.
@@ -1272,9 +1157,12 @@ class App(QMainWindow):
# updates the plot to see the modification.
self.m.updatedata()
+
self.Enable(self.button_changecellvalue)
self.button_changecellvalue.setChecked(False)
self.m.ShowCellNumbers()
+ self.SaveMask()
+ self.ClearStatusBar()
def DialogBoxECV(self, s):
@@ -1296,9 +1184,12 @@ class App(QMainWindow):
value2 = int(dlg.entry2.text())
# calls the function which does the swap
- self.m.ExchangeCellValue(value1,value2)
+ try:
+ self.m.ExchangeCellValue(value1,value2)
+ except ValueError as e:
+ QMessageBox.critical(self, 'Error', str(e))
self.m.ShowCellNumbers()
-
+ self.SaveMask()
else:
return
@@ -1356,7 +1247,7 @@ class App(QMainWindow):
QApplication.restoreOverrideCursor()
self.Enable(self.button_drawmouse)
self.Enable(self.button_eraser)
-
+ self.SaveMask()
self.ClearStatusBar()
@@ -1422,6 +1313,7 @@ class App(QMainWindow):
self.Enable(self.button_newcell)
self.m.ShowCellNumbers()
self.ClearStatusBar()
+ self.SaveMask()
def TestSelectedPoints(self):
@@ -1489,6 +1381,7 @@ class App(QMainWindow):
self.Enable(self.button_add_region)
self.m.ShowCellNumbers()
self.ClearStatusBar()
+ self.SaveMask()
# -----------------------------------------------------------------------------
@@ -1500,17 +1393,9 @@ class App(QMainWindow):
index. (next and previous buttons should not be turned on if t = 0
or t = lasttimeindex)
"""
- if self.button_segment.isChecked():
- self.EnableCorrectionsButtons()
- self.button_home.setEnabled(True)
- self.button_zoom.setEnabled(True)
- self.button_pan.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
- else:
- for k in range(0, len(self.buttonlist)):
- if button != self.buttonlist[k]:
- self.buttonlist[k].setEnabled(True)
+ for k in range(0, len(self.buttonlist)):
+ if button != self.buttonlist[k]:
+ self.buttonlist[k].setEnabled(True)
if self.Tindex == 0:
self.button_previousframe.setEnabled(False)
@@ -1526,39 +1411,17 @@ class App(QMainWindow):
this functions turns off all the buttons except the one given in
argument.
"""
- flag = False
- if (button == self.button_add_region
- or button == self.button_newcell
- or button == self.button_exval
- or button == self.button_changecellvalue
- or button == self.button_drawmouse
- or button == self.button_eraser):
- if self.button_segment.isChecked():
- flag = True
for k in range(0,len(self.buttonlist)):
if button != self.buttonlist[k]:
self.buttonlist[k].setEnabled(False)
- if flag:
- self.button_segment.setEnabled(True)
-
- if button == self.button_segment or button == self.button_threshold:
- self.button_home.setEnabled(True)
- self.button_zoom.setEnabled(True)
- self.button_pan.setEnabled(True)
- self.button_back.setEnabled(True)
- self.button_forward.setEnabled(True)
def EnableCNNButtons(self):
if self.reader.TestTimeExist(self.Tindex, self.FOVindex):
- self.button_threshold.setEnabled(True)
- self.button_segment.setEnabled(True)
self.button_cellcorespondance.setEnabled(True)
self.button_extractfluorescence.setEnabled(True)
else:
- self.button_threshold.setEnabled(False)
- self.button_segment.setEnabled(False)
self.button_cellcorespondance.setEnabled(False)
self.button_extractfluorescence.setEnabled(False)
@@ -1583,7 +1446,7 @@ class App(QMainWindow):
self.button_showval.setEnabled(False)
- def ButtonSaveMask(self):
+ def SaveMask(self):
"""
When this function is called, it saves the current mask
(self.m.plotmask)
diff --git a/init/InitButtons.py b/init/InitButtons.py
index 2eb9c13dff09a118b1e7f69a0a0c91190d5f2328..19d23c60fe10db71339d902ee5e97dff38b5f05d 100644
--- a/init/InitButtons.py
+++ b/init/InitButtons.py
@@ -115,15 +115,6 @@ def Init(parent):
parent.button_pan.setStatusTip('Pan')
parent.buttonlist.append(parent.button_pan)
- # SAVE
- parent.button_savemask.toggle()
- parent.button_savemask.setEnabled(True)
- parent.button_savemask.clicked.connect(parent.ButtonSaveMask)
- parent.button_savemask.setToolTip("Use S Key for shortcut")
- parent.button_savemask.setMaximumWidth(150)
- parent.button_savemask.setShortcut("S")
- parent.button_savemask.setStatusTip('Save the mask')
-
# BRUSH
parent.button_drawmouse.setCheckable(True)
parent.button_drawmouse.clicked.connect(parent.MouseDraw)
@@ -154,48 +145,7 @@ def Init(parent):
parent.button_changecellvalue.setMaximumWidth(150)
parent.button_changecellvalue.setStatusTip('Change value of one cell')
parent.button_changecellvalue.setToolTip('Use left click to select one cell and enter a new value')
-
-# # THRESHOLD THE PREDICTION CHECKBOX
-# parent.button_threshold.setEnabled(False)
-# parent.button_threshold.stateChanged.connect(parent.ThresholdBoxCheck)
-
-# # TEXT BOX FOR ENTERING THRESHOLD VALUE
-# parent.button_SetThreshold = QLineEdit()
-# parent.button_SetThreshold.setPlaceholderText('Enter a threshold value')
-# parent.button_SetThreshold.setValidator(QtGui.QDoubleValidator())
-# parent.button_SetThreshold.setMaximumWidth(150)
-# parent.button_SetThreshold.returnPressed.connect(parent.ThresholdPrediction)
-# parent.button_SetThreshold.setEnabled(False)
-
-# # SAVE BUTTON FOR THE THRESHOLDED PREDICTION
-# parent.button_savethresholdmask = QPushButton('Save Threshold')
-# parent.button_savethresholdmask.toggle()
-# parent.button_savethresholdmask.setEnabled(False)
-# parent.button_savethresholdmask.clicked.connect(parent.ButtonSaveThresholdMask)
-# parent.button_savethresholdmask.setMaximumWidth(150)
-# parent.button_savethresholdmask.setStatusTip('Save the thresholded prediction')
-
- # SEGMENT THE OUTPUT OF THE THRESHOLD
- parent.button_segment.setEnabled(False)
- parent.button_segment.stateChanged.connect(parent.SegmentBoxCheck)
-
- # TEXT BOX FOR THE PARAMETERS OF THE SEGMENTATION
- parent.button_SetSegmentation = QLineEdit()
- parent.button_SetSegmentation.setPlaceholderText('Enter param for seg')
- parent.button_SetSegmentation.setValidator(QtGui.QIntValidator())
- parent.button_SetSegmentation.setMaximumWidth(80)
- parent.button_SetSegmentation.returnPressed.connect(parent.SegmentThresholdedPredMask)
- parent.button_SetSegmentation.setEnabled(False)
- parent.button_SetSegmentation.setText('10')
-
- # SAVE BUTTON FOR THE SEGMENTATION OF THE THRESHOLDED PREDICTION
- parent.button_savesegmask = QPushButton('Save Seg')
- parent.button_savesegmask.toggle()
- parent.button_savesegmask.setEnabled(False)
- parent.button_savesegmask.clicked.connect(parent.ButtonSaveSegMask)
- parent.button_savesegmask.setMaximumWidth(150)
- parent.button_savesegmask.setStatusTip('Save the segmented thresholded prediction')
-
+
# MAKE THE CELL CORRESPONDANCE
parent.button_cellcorespondance.setEnabled(False)
parent.button_cellcorespondance.setCheckable(True)
diff --git a/init/InitLayout.py b/init/InitLayout.py
index 7428f1fa3c68cb23e86d2e527de870b5e89b8d63..141842048e8e1bec28c18d3daa49f40fc405ba7c 100644
--- a/init/InitLayout.py
+++ b/init/InitLayout.py
@@ -3,130 +3,60 @@
Initializing the layout of the main window. It places the buttons and the
pictures at the desired positions.
"""
-#from PyQt5.QtWidgets import QApplication, QMainWindow, QMenu, QVBoxLayout, QSizePolicy, QMessageBox, QWidget, QPushButton, QShortcut, QComboBox, QCheckBox, QLineEdit, QMenu, QAction, QStatusBar
-#from PyQt5 import QtGui
-#from PyQt5.QtCore import pyqtSignal, QObject, Qt
-from matplotlib.backends.qt_compat import QtCore, QtWidgets, is_pyqt5
+from matplotlib.backends.qt_compat import QtWidgets
def Init(parent):
-
-# LAYOUT OF THE MAIN WINDOW
- layout = QtWidgets.QVBoxLayout(parent._main)
-
-
-# LAYOUT FOR THE THRESHOLD BUTTONS
-# all the buttons of the threshold function are placed in an horizontal
-# stack
-# hbox_threshold = QtWidgets.QHBoxLayout()
-# hbox_threshold.addWidget(parent.button_threshold)
-# hbox_threshold.addWidget(parent.button_SetThreshold)
-# hbox_threshold.addWidget(parent.button_savethresholdmask)
-## if this line is not put, then the buttons are placed along the whole
-## length of the window, in this way they are all grouped to the left.
-# hbox_threshold.addStretch(1)
-
-
-
-# LAYOUT FOR THE SEGMENTATION BUTTONS
-# all the buttons of the segment function are placed in an
-# horizontal stack
- hbox_segment = QtWidgets.QHBoxLayout()
- hbox_segment.addWidget(parent.button_segment)
- hbox_segment.addWidget(parent.button_SetSegmentation)
- hbox_segment.addWidget(parent.button_savesegmask)
-# if this line is not put, then the buttons are placed along the whole
-# length of the window, in this way they are all grouped to the left.
- hbox_segment.addStretch(1)
-
-
-# LAYOUT FOR THE TOOLBAR BUTTONS
-# all the buttons of the toolbar are placed in an
-# horizontal stack
- hbox = QtWidgets.QHBoxLayout()
-
- hbox.addWidget(parent.button_home)
- hbox.addWidget(parent.button_back)
- hbox.addWidget(parent.button_forward)
- hbox.addWidget(parent.button_pan)
- hbox.addWidget(parent.button_zoom)
-
- hbox.addStretch(1)
-# we add all our widgets in the layout
- layout.addLayout(hbox)
-# layout.addWidget(parent.button_zoom)
-# layout.addWidget
-
-
-# makes a horizontal layout for the buttons used to navigate through
-# the time axis.
- hboxtimeframes = QtWidgets.QHBoxLayout()
-
- hboxtimeframes.addWidget(parent.button_fov)
- hboxtimeframes.addWidget(parent.button_channel)
- hboxtimeframes.addStretch()
- hboxtimeframes.addWidget(parent.button_previousframe)
- hboxtimeframes.addWidget(parent.button_timeindex)
- hboxtimeframes.addWidget(parent.button_nextframe)
- hboxtimeframes.addStretch()
-
-
- # add the frames of the pictures in the layout.
- hlayout = QtWidgets.QHBoxLayout()
- hlayout.addWidget(parent.m)
- hlayout.setContentsMargins(0, 0, 0, 0)
-
- layout.addLayout(hlayout)
-
- layout.addLayout(hboxtimeframes)
-
-# layout.addStretch(0.7)
-
- hboxcorrectionsbuttons = QtWidgets.QHBoxLayout()
- hboxcorrectionsbuttons.addWidget(parent.button_add_region)
- hboxcorrectionsbuttons.addWidget(parent.button_newcell)
- hboxcorrectionsbuttons.addWidget(parent.button_drawmouse)
- hboxcorrectionsbuttons.addWidget(parent.button_eraser)
- hboxcorrectionsbuttons.addWidget(parent.button_savemask)
- hboxcorrectionsbuttons.addStretch(1)
- hboxcorrectionsbuttons.addWidget(parent.button_showval)
- hboxcorrectionsbuttons.addWidget(parent.button_hidemask)
- layout.addLayout(hboxcorrectionsbuttons)
-
-
-
-
-# LAYOUT FOR EDITING CELL VALUES, SHOW CELL VALUES AND HIDE MASK, CNN BUTTONS
-
- hboxcellval = QtWidgets.QHBoxLayout()
- hboxcellval.addWidget(parent.button_exval)
- hboxcellval.addWidget(parent.button_changecellvalue)
- hboxcellval.addStretch(1)
- hboxcellval.addWidget(parent.button_cnn)
- hboxcellval.addWidget(parent.button_cellcorespondance)
- hboxcellval.addWidget(parent.button_extractfluorescence)
- layout.addLayout(hboxcellval)
-
-
-
-# # LAYOUT FOR LAUNCH NN, TRACK CELLS AND EXTRACT FLUORESCENCE
-
-# hboxcnnbuttons = QtWidgets.QHBoxLayout()
-# hboxcnnbuttons.addStretch(1)
-
-
-
-# layout.addLayout(hboxcnnbuttons)
-
-
-
-
- # BUTTONS TO SHOW THE THRESHOLD AND SEGMENTATION ARE HIDDEN HERE!
- # UNCOMMENT THEM TO MAKE THEM APPEAR ON THE GUI.
-
- # layout.addLayout(hbox_threshold)
-
- # layout.addLayout(hbox_segment)
-
+
+ # LAYOUT OF THE MAIN WINDOW
+ layout = QtWidgets.QVBoxLayout(parent._main)
+
+ # LAYOUT FOR THE TOOLBAR BUTTONS
+ hbox = QtWidgets.QHBoxLayout()
+ hbox.addWidget(parent.button_home)
+ hbox.addWidget(parent.button_back)
+ hbox.addWidget(parent.button_forward)
+ hbox.addWidget(parent.button_pan)
+ hbox.addWidget(parent.button_zoom)
+ hbox.addStretch(1)
+ layout.addLayout(hbox)
+
+ # TIME NAVIGATION
+ hboxtimeframes = QtWidgets.QHBoxLayout()
+ hboxtimeframes.addWidget(parent.button_fov)
+ hboxtimeframes.addWidget(parent.button_channel)
+ hboxtimeframes.addStretch()
+ hboxtimeframes.addWidget(parent.button_previousframe)
+ hboxtimeframes.addWidget(parent.button_timeindex)
+ hboxtimeframes.addWidget(parent.button_nextframe)
+ hboxtimeframes.addStretch()
+
+ # IMAGE DISPLAY
+ hlayout = QtWidgets.QHBoxLayout()
+ hlayout.addWidget(parent.m)
+ hlayout.setContentsMargins(0, 0, 0, 0)
+ layout.addLayout(hlayout)
+ layout.addLayout(hboxtimeframes)
+
+ # CORRECTIONS/ IMAGE EDITS
+ hboxcorrectionsbuttons = QtWidgets.QHBoxLayout()
+ hboxcorrectionsbuttons.addWidget(parent.button_add_region)
+ hboxcorrectionsbuttons.addWidget(parent.button_newcell)
+ hboxcorrectionsbuttons.addWidget(parent.button_drawmouse)
+ hboxcorrectionsbuttons.addWidget(parent.button_eraser)
+ hboxcorrectionsbuttons.addStretch(1)
+ hboxcorrectionsbuttons.addWidget(parent.button_showval)
+ hboxcorrectionsbuttons.addWidget(parent.button_hidemask)
+ layout.addLayout(hboxcorrectionsbuttons)
+
+ # LAYOUT FOR EDITING CELL VALUES, SHOW CELL VALUES AND HIDE MASK, CNN BUTTONS
+ hboxcellval = QtWidgets.QHBoxLayout()
+ hboxcellval.addWidget(parent.button_exval)
+ hboxcellval.addWidget(parent.button_changecellvalue)
+ hboxcellval.addStretch(1)
+ hboxcellval.addWidget(parent.button_cnn)
+ hboxcellval.addWidget(parent.button_cellcorespondance)
+ hboxcellval.addWidget(parent.button_extractfluorescence)
+ layout.addLayout(hboxcellval)
diff --git a/misc/PlotCanvas.py b/misc/PlotCanvas.py
index 801bd2c072ebff24b1383c5cfd8a8c57a9a2ab27..f3c04d2bfc6a4d2a7797dcb9bab4603cd7a7d83d 100644
--- a/misc/PlotCanvas.py
+++ b/misc/PlotCanvas.py
@@ -126,9 +126,8 @@ class PlotCanvas(FigureCanvas):
for i in range(0,len(indices[0])):
self.plotmask[indices[0][i], indices[1][i]] = val2
self.updatedata()
-
else:
- return
+ raise ValueError('Cell value does not exist.')
def ReleaseClick(self, event):