def submit(self):
""" This function gets called after clicking on the submit button
"""
myLogger.message("New system submitted...")
try:
xtxt = str(self.xDotLineEdit.text())
ytxt = str(self.yDotLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.warn_message("UnicodeEncodeError! Please check input.")
myLogger.debug_message(str(exc))
else:
cond1 = str(self.xDotLineEdit.text()) != ""
cond2 = str(self.yDotLineEdit.text()) != ""
if cond1 and cond2:
x_string = str(self.xDotLineEdit.text())
y_string = str(self.yDotLineEdit.text())
try:
# Non-modal (!) Box intended for calming down the user...
info_box = QtWidgets.QMessageBox(self)
info_box.setAttribute(Qt.WA_DeleteOnClose)
info_box.setStandardButtons(QtWidgets.QMessageBox.Ok)
info_box.setIcon(QtWidgets.QMessageBox.Information)
info_box.setWindowTitle("New system submitted")
info_box.setText(
"The new system is being processed now, please wait! \n"
"Especially when LaTeX is used for the labels this may take some time and the "
"program might seem unresponsive!")
info_box.setModal(False)
info_box.show()
QtCore.QCoreApplication.processEvents()
# Processing equations
equation = (x_string, y_string)
system = System(self, equation)
self.systems.insert(0, system)
self.save_tmp_system()
myLogger.message("------ new system created ------")
myLogger.message(
" x' = " +
str(system.equation.what_is_my_system()[0]))
myLogger.message(
" y' = " +
str(system.equation.what_is_my_system()[1]) + "\n", )
try:
info_box.close()
except RuntimeError: # if dialog has already been closed by the user
pass
except BaseException as exc:
QtWidgets.QMessageBox.critical(
self, "Error!",
"An error occured while processing the system. "
"Detailed error message: \n %s" % exc)
myLogger.error_message(str(exc))
else:
myLogger.error_message("Please check system!")
def submit(self):
""" This function gets called after clicking on the submit button
"""
try:
xtxt = str(self.xDotLineEdit.text())
ytxt = str(self.yDotLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.warn_message("UnicodeEncodeError! Please check input.")
myLogger.debug_message(str(exc))
else:
cond1 = str(self.xDotLineEdit.text()) != ""
cond2 = str(self.yDotLineEdit.text()) != ""
if cond1 and cond2:
x_string = str(self.xDotLineEdit.text())
y_string = str(self.yDotLineEdit.text())
equation = (x_string, y_string)
system = System(self, equation)
self.systems.insert(0, system)
self.save_tmp_system()
myLogger.message("------ new system created ------")
myLogger.message(" x' = " +
str(system.equation.what_is_my_system()[0]))
myLogger.message(
" y' = " + str(system.equation.what_is_my_system()[1]) +
"\n", )
else:
myLogger.error_message("Please check system!")
def submit(self):
""" This function gets called after clicking on the submit button
"""
try:
xtxt = str(self.xDotLineEdit.text())
ytxt = str(self.yDotLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.warn_message("UnicodeEncodeError! Please check input.")
myLogger.debug_message(str(exc))
else:
cond1 = str(self.xDotLineEdit.text()) != ""
cond2 = str(self.yDotLineEdit.text()) != ""
if cond1 and cond2:
x_string = str(self.xDotLineEdit.text())
y_string = str(self.yDotLineEdit.text())
equation = (x_string, y_string)
system = System(self, equation)
self.systems.insert(0, system)
self.save_tmp_system()
myLogger.message("------ new system created ------")
myLogger.message(" x' = " + str(system.equation.what_is_my_system()[0]))
myLogger.message(" y' = " + str(system.equation.what_is_my_system()[1]) + "\n", )
else:
myLogger.error_message("Please check system!")
def save_tmp_system(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name = 'library/tmp.ppf'
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def save_tmp_system(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name = 'library/tmp.ppf'
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def handle_exception(error):
myLogger.error_message("Error: An Python Exception occured.")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
myLogger.message("See the log file config/logmessages.txt for full traceback ")
exc_type, exc_value, exc_tb = sys.exc_info()
lines = traceback.format_exception(exc_type, exc_value, exc_tb)
tb_msg = "".join(lines)
myLogger.append_to_file(tb_msg)
def save_file(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name, file_type = QtWidgets.QFileDialog.getSaveFileName(
self, "Save pyplane file", "", "pyplane file (*.ppf)")
# sys_pickleds = system.pickle(file_name)
# system.equation.what_is_my_system()
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def set_window_range(self, Graph):
""" This function changes the window range of Graph.
"""
# TODO: check if there is a better way to do this? --> put lineedit stuff in PyplaneMainWindow or MainApp!
try:
# phase plane flag
pp_flag = False
if Graph == self.plot_pp:
xmin = float(self.parent.PP_xminLineEdit.text())
xmax = float(self.parent.PP_xmaxLineEdit.text())
ymin = float(self.parent.PP_yminLineEdit.text())
ymax = float(self.parent.PP_ymaxLineEdit.text())
# set flag
pp_flag = True
elif Graph == self.plot_x:
xmin = float(self.parent.X_tminLineEdit.text())
xmax = float(self.parent.X_tmaxLineEdit.text())
ymin = float(self.parent.X_xminLineEdit.text())
ymax = float(self.parent.X_xmaxLineEdit.text())
# elif Graph == self.plot_y:
else:
xmin = float(self.parent.Y_tminLineEdit.text())
xmax = float(self.parent.Y_tmaxLineEdit.text())
ymin = float(self.parent.Y_yminLineEdit.text())
ymax = float(self.parent.Y_ymaxLineEdit.text())
if xmin < xmax and ymin < ymax:
Graph.axes.set_xlim(xmin, xmax)
Graph.axes.set_ylim(ymin, ymax)
if pp_flag:
# self.update_graph(Graph)
myVectorfield.update()
myStreamlines.update()
#self.update_vectorfield()
#self.update_streamlines()
myNullclines.update()
else:
myLogger.error_message("Please check window size input!")
except Exception as error:
myLogger.error_message("Error!")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
# update_all graph
self.update_graph(Graph)
def handle_exception(error):
myLogger.error_message("Error: An Python Exception occured.")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
myLogger.message(
"See the log file config/logmessages.txt for full traceback ")
exc_type, exc_value, exc_tb = sys.exc_info()
lines = traceback.format_exception(exc_type, exc_value, exc_tb)
tb_msg = "".join(lines)
myLogger.append_to_file(tb_msg)
def submit(self):
""" This function gets called after clicking on the submit button
"""
try:
xtxt = str(self.xDotLineEdit.text())
ytxt = str(self.yDotLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.warn_message("UnicodeEncodeError! Please check input.")
myLogger.debug_message(str(exc))
else:
cond1 = str(self.xDotLineEdit.text()) != ""
cond2 = str(self.yDotLineEdit.text()) != ""
if cond1 and cond2:
# set right hand side, print rhs to logfield, solve,
# then plot vector field
# initialize system
mySystem.__init__()
# set rhs
x_string = str(self.xDotLineEdit.text())
y_string = str(self.yDotLineEdit.text())
mySystem.set_rhs(x_string, y_string)
try:
# write to tmp file:
self.save_system('library/tmp.ppf')
# clear figure, if there is any
self.myGraph.clear()
# delete linearization tabs (index 3 to n)
if len(self.linearization_stack) > 0:
for i in xrange(0, len(self.linearization_stack)):
index = 3 + len(self.linearization_stack) - i
self.tabWidget.removeTab(index)
#reset stack
self.linearization_stack = []
myLogger.debug_message("All linearization tabs removed.")
self.initializing()
myLogger.message("------ new system created ------")
myLogger.message(" x' = " + str(mySystem.what_is_my_system()[0]))
myLogger.message(" y' = " + str(mySystem.what_is_my_system()[1]) + "\n", )
except Exception as error:
handle_exception(error)
else:
myLogger.error_message("No system entered")
def set_window_range(self, Graph):
""" This function changes the window range of Graph.
"""
# TODO: check if there is a better way to do this? --> put lineedit stuff in PyplaneMainWindow or MainApp!
try:
# phase plane flag
pp_flag = False
if Graph == self.plot_pp:
xmin = float(self.parent.PP_xminLineEdit.text())
xmax = float(self.parent.PP_xmaxLineEdit.text())
ymin = float(self.parent.PP_yminLineEdit.text())
ymax = float(self.parent.PP_ymaxLineEdit.text())
# set flag
pp_flag = True
elif Graph == self.plot_x:
xmin = float(self.parent.X_tminLineEdit.text())
xmax = float(self.parent.X_tmaxLineEdit.text())
ymin = float(self.parent.X_xminLineEdit.text())
ymax = float(self.parent.X_xmaxLineEdit.text())
# elif Graph == self.plot_y:
else:
xmin = float(self.parent.Y_tminLineEdit.text())
xmax = float(self.parent.Y_tmaxLineEdit.text())
ymin = float(self.parent.Y_yminLineEdit.text())
ymax = float(self.parent.Y_ymaxLineEdit.text())
if xmin < xmax and ymin < ymax:
Graph.axes.set_xlim(xmin, xmax)
Graph.axes.set_ylim(ymin, ymax)
if pp_flag:
# self.update_graph(Graph)
myVectorfield.update()
myStreamlines.update()
#self.update_vectorfield()
#self.update_streamlines()
myNullclines.update()
else:
myLogger.error_message("Please check window size input!")
except Exception as error:
myLogger.error_message("Error!")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
# update_all graph
self.update_graph(Graph)
def save_file(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name, filter = QtGui.QFileDialog.getSaveFileNameAndFilter(
self, 'Save pyplane file', '', 'pyplane file (*.ppf)')
#~ sys_pickleds = system.pickle(file_name)
#~ system.equation.what_is_my_system()
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def save_file(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name, file_type = QtWidgets.QFileDialog.getSaveFileName(self, "Save pyplane file", "",
"pyplane file (*.ppf)")
# sys_pickleds = system.pickle(file_name)
# system.equation.what_is_my_system()
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def submit(self):
""" This function gets called after clicking on the submit button
"""
myLogger.message("New system submitted...")
try:
xtxt = str(self.xDotLineEdit.text())
ytxt = str(self.yDotLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.warn_message("UnicodeEncodeError! Please check input.")
myLogger.debug_message(str(exc))
else:
cond1 = str(self.xDotLineEdit.text()) != ""
cond2 = str(self.yDotLineEdit.text()) != ""
if cond1 and cond2:
x_string = str(self.xDotLineEdit.text())
y_string = str(self.yDotLineEdit.text())
try:
# Non-modal (!) Box intended for calming down the user...
info_box = QtWidgets.QMessageBox(self)
info_box.setAttribute(Qt.WA_DeleteOnClose)
info_box.setStandardButtons(QtWidgets.QMessageBox.Ok)
info_box.setIcon(QtWidgets.QMessageBox.Information)
info_box.setWindowTitle("New system submitted")
info_box.setText("The new system is being processed now, please wait! \n"
"Especially when LaTeX is used for the labels this may take some time and the "
"program might seem unresponsive!")
info_box.setModal(False)
info_box.show()
QtCore.QCoreApplication.processEvents()
# Processing equations
equation = (x_string, y_string)
system = System(self, equation)
self.systems.insert(0, system)
self.save_tmp_system()
myLogger.message("------ new system created ------")
myLogger.message(" x' = " + str(system.equation.what_is_my_system()[0]))
myLogger.message(" y' = " + str(system.equation.what_is_my_system()[1]) + "\n", )
try:
info_box.close()
except RuntimeError: # if dialog has already been closed by the user
pass
except BaseException as exc:
QtWidgets.QMessageBox.critical(self, "Error!", "An error occured while processing the system. "
"Detailed error message: \n %s" % exc)
myLogger.error_message(str(exc))
else:
myLogger.error_message("Please check system!")
def save_file(self):
if len(self.systems) > 0:
index = self.tabWidget.currentIndex()
system = self.systems[index]
file_name, filter = QtGui.QFileDialog.getSaveFileNameAndFilter(self,
'Save pyplane file', '',
'pyplane file (*.ppf)')
#~ sys_pickleds = system.pickle(file_name)
#~ system.equation.what_is_my_system()
self.save_system(file_name, system.equation.what_is_my_system())
else:
myLogger.error_message("There is no system to save!")
def onclick(self, event):
"""
This function is in charge of the mouse-click behaviour.
A left mouse button click is recognized, the mouse location serves
as an initial condition for trajectories.
"""
#TODO: check if try/except is the best thing to do here!
if not self.plot_pp.zoomMode:
try:
mySystem
except:
# only capture mouse click if system exists
myLogger.error_message("Please enter system.")
else:
cond1 = mySystem.x_dot is not None
cond2 = mySystem.x_dot is not None
cond3 = str(self.parent.xDotLineEdit.text()) != ""
cond4 = str(self.parent.yDotLineEdit.text()) != ""
if cond1 and cond2 and cond3 and cond4:
event1 = event.xdata is not None
event2 = event.ydata is not None
button = event.button == 1
if not myEquilibria.eqp_toggle:
# event.xdata and event.ydata are initial conditions for integration
# mouse click will also be recognized if clicked outside of the graph area, so filter that:
if event1 and event2 and button:
forward, backward = self.trajectory_direction()
if myTrajectories.plot_trajectory(
[event.xdata, event.ydata], forward, backward):
myLogger.message("New initial condition: " +
str(event.xdata) + ", " +
str(event.ydata))
else:
pass
else:
# equilibrium point
if event1 and event2 and button:
equilibrium_point = myEquilibria.find_equilibrium(
[event.xdata, event.ydata])
if equilibrium_point is not None:
self.parent.add_linearization_tab(
equilibrium_point)
else:
# only capture mouse click if system exists
myLogger.error_message("Please enter system.")
else:
myLogger.debug_message("in zoom mode")
def set_window_range(self):
_min = float(self.myWidget.xminLineEdit.text())
_max = float(self.myWidget.xmaxLineEdit.text())
_tmin = float(self.myWidget.yminLineEdit.text())
_tmax = float(self.myWidget.ymaxLineEdit.text())
if _min < _max and _tmin < _tmax:
self.canvas.axes.set_xlim(_min, _max)
self.canvas.axes.set_ylim(_tmin, _tmax)
else:
myLogger.error_message("Please check window size input!")
self.update()
def set_window_range(self):
_min = float(self.myWidget.xminLineEdit.text())
_max = float(self.myWidget.xmaxLineEdit.text())
_tmin = float(self.myWidget.yminLineEdit.text())
_tmax = float(self.myWidget.ymaxLineEdit.text())
if _min < _max and _tmin < _tmax:
self.canvas.axes.set_xlim(_min, _max)
self.canvas.axes.set_ylim(_tmin, _tmax)
else:
myLogger.error_message("Please check window size input!")
self.update()
def read(self, section, variable):
if self.config.has_option(str(section), str(variable)):
value = self.config.get(str(section), str(variable))
# TODO: check if the config value is of same type as fallback value
myLogger.debug_message(str(variable) + "\": " + str(value) + " (config)")
return value
elif str(variable) in self.descr:
# fallback value
value = self.descr[str(variable)][1]
myLogger.debug_message(str(variable) + "\": " + str(value) + " (fallback)")
return value
else:
#pass
myLogger.error_message("Error! A variable was called that does not exist.")
def remove_all(self):
""" this function removes every trajectory in y(x), x(t) and y(t)
"""
for i in self.traj_dict:
# i is the next key
for j in range(0, len(self.traj_dict[i])):
# j is a list element from the traj_stack
try:
self.traj_dict[i].pop()[0].remove()
except Exception as error:
myLogger.error_message("Could not delete trajectory")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
self.mySystem.update()
def export_as(self):
""" export dialog for pyplane plot
"""
q_files_types = QtCore.QString(".png;;.svg;;.pdf;;.eps")
q_file_name, q_file_type = QtGui.QFileDialog.getSaveFileNameAndFilter(
self, "Export PyPlane Plot as .png, .svg, .pdf, or .eps-file", "",
q_files_types)
# Ensure we are out of the QString world in the following
file_name = str(q_file_name)
file_type = str(q_file_type)
if file_name:
# Fix: Under some KDE's the file_type is returned empty because
# of a "DBUS-error". Hence, in such cases, we try to take the
# file_type from the extension specified by the user . If no valid extension
# is set by the user file_type is set to png. This bugfix is addressed
# in the first part of the "if not" structure.
#
# In the else part of the "if not" structure the case is handled
# where the user wants to have dots in the basename of the file
# (affects all operating systems)
#
file_name2, file_type2 = os.path.splitext(file_name)
if not file_type:
if file_type2 not in [".png", ".svg", ".pdf", ".eps"]:
file_type = ".png"
else:
# Allow things like figure.case21.pdf
file_name = file_name2
file_type = file_type2
else:
# This part runs on non KDE-systems or KDE-systems without
# the DBUS error:
# drop accidently added duplicate file extensions
# (avoid figure.png.png but allow figure.case1.png)
if file_type2 == file_type:
file_name = file_name2
# ------
if file_type == ".png":
self.export_as_png(file_name)
elif file_type == ".svg":
self.export_as_svg(file_name)
elif file_type == ".pdf":
self.export_as_pdf(file_name)
elif file_type == ".eps":
self.export_as_eps(file_name)
else:
myLogger.error_message("Filetype-Error")
def export_as(self):
""" export dialog for pyplane plot
"""
q_files_types = QtCore.QString(".png;;.svg;;.pdf;;.eps")
q_file_name, q_file_type = QtGui.QFileDialog.getSaveFileNameAndFilter(self,
"Export PyPlane Plot as .png, .svg, .pdf, or .eps-file", "",
q_files_types)
# Ensure we are out of the QString world in the following
file_name = str(q_file_name)
file_type = str(q_file_type)
if file_name:
# Fix: Under some KDE's the file_type is returned empty because
# of a "DBUS-error". Hence, in such cases, we try to take the
# file_type from the extension specified by the user . If no valid extension
# is set by the user file_type is set to png. This bugfix is addressed
# in the first part of the "if not" structure.
#
# In the else part of the "if not" structure the case is handled
# where the user wants to have dots in the basename of the file
# (affects all operating systems)
#
file_name2, file_type2 = os.path.splitext(file_name)
if not file_type:
if file_type2 not in [".png", ".svg", ".pdf", ".eps"]:
file_type = ".png"
else:
# Allow things like figure.case21.pdf
file_name = file_name2
file_type = file_type2
else:
# This part runs on non KDE-systems or KDE-systems without
# the DBUS error:
# drop accidently added duplicate file extensions
# (avoid figure.png.png but allow figure.case1.png)
if file_type2 == file_type:
file_name = file_name2
# ------
if file_type == ".png":
self.export_as_png(file_name)
elif file_type == ".svg":
self.export_as_svg(file_name)
elif file_type == ".pdf":
self.export_as_pdf(file_name)
elif file_type == ".eps":
self.export_as_eps(file_name)
else:
myLogger.error_message("Filetype-Error")
def get_boolean(self, section, variable):
if self.config.has_option(str(section), str(variable)):
value = self.config.getboolean(str(section), str(variable))
myLogger.debug_message(str(variable) + "\": " + str(value) + " (config)")
return value
elif str(variable) in self.decr:
#self.descr.has_key(str(variable)):
# fallback value
value = self.descr[str(variable)][1]
myLogger.debug_message(str(variable) + "\": " + str(value) + " (fallback)")
return value
else:
#pass
myLogger.error_message("Error! A variable was called that does not exist.")
def remove_all(self):
""" this function removes every trajectory in y(x), x(t) and y(t)
"""
for i in self.traj_dict:
# i is the next key
for j in xrange(0, len(self.traj_dict[i])):
# j is a list element from the traj_stack
try:
self.traj_dict[i].pop()[0].remove()
except Exception as error:
myLogger.error_message("Could not delete trajectory")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
self.mySystem.update()
def onclick(self, event):
"""
This function is in charge of the mouse-click behaviour.
A left mouse button click is recognized, the mouse location serves
as an initial condition for trajectories.
"""
#TODO: check if try/except is the best thing to do here!
if not self.plot_pp.zoomMode:
try:
mySystem
except:
# only capture mouse click if system exists
myLogger.error_message("Please enter system.")
else:
cond1 = mySystem.x_dot is not None
cond2 = mySystem.x_dot is not None
cond3 = str(self.parent.xDotLineEdit.text()) != ""
cond4 = str(self.parent.yDotLineEdit.text()) != ""
if cond1 and cond2 and cond3 and cond4:
event1 = event.xdata is not None
event2 = event.ydata is not None
button = event.button == 1
if not myEquilibria.eqp_toggle:
# event.xdata and event.ydata are initial conditions for integration
# mouse click will also be recognized if clicked outside of the graph area, so filter that:
if event1 and event2 and button:
forward, backward = self.trajectory_direction()
if myTrajectories.plot_trajectory([event.xdata, event.ydata], forward, backward):
myLogger.message("New initial condition: " + str(event.xdata) + ", " + str(event.ydata))
else:
pass
else:
# equilibrium point
if event1 and event2 and button:
myEquilibria.find_equilibrium([event.xdata, event.ydata])
else:
# only capture mouse click if system exists
myLogger.error_message("Please enter system.")
else:
myLogger.debug_message("in zoom mode")
def create_trajectory(self):
try:
initial_condition = self.mySystem.Phaseplane.read_init()
forward, backward = self.mySystem.Phaseplane.trajectory_direction()
cond1 = initial_condition[0] is not None
cond2 = initial_condition[1] is not None
# check if trajectory with initial_condition exists already
cond3 = not str(initial_condition) in self.traj_dict
if cond1 and cond2 and cond3:
self.plot_trajectory(initial_condition, forward, backward)
myLogger.message("New initial condition: " + str(initial_condition[0]) + ", " + str(initial_condition[1]))
except Exception as error:
myLogger.error_message("Could not create trajectory")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
def export_as(self):
""" export dialog for pyplane plot
"""
files_types = "png;;svg;;pdf;;eps"
file_name, filter = QtGui.QFileDialog.getSaveFileNameAndFilter(self,
'Export PyPlane Plot', '',
files_types)
if len(file_name) > 0:
if filter == "png":
self.export_as_png(file_name)
elif filter == "svg":
self.export_as_svg(file_name)
elif filter == "pdf":
self.export_as_pdf(file_name)
elif filter == "eps":
self.export_as_eps(file_name)
else:
myLogger.error_message("Filetype-Error")
def create_trajectory(self):
try:
initial_condition = self.mySystem.Phaseplane.read_init()
forward, backward = self.mySystem.Phaseplane.trajectory_direction()
cond1 = initial_condition[0] is not None
cond2 = initial_condition[1] is not None
# check if trajectory with initial_condition exists already
cond3 = not str(initial_condition) in self.traj_dict
if cond1 and cond2 and cond3:
self.plot_trajectory(initial_condition, forward, backward)
myLogger.message("New initial condition: " +
str(initial_condition[0]) + ", " +
str(initial_condition[1]))
except Exception as error:
myLogger.error_message("Could not create trajectory")
myLogger.debug_message(str(type(error)))
myLogger.debug_message(str(error))
def add(self):
try:
fct_string = str(self.mySystem.myPyplane.yLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.error_message("input error!")
myLogger.debug_message(str(exc))
fct_string = str(self.mySystem.myPyplane.yLineEdit.text())
if fct_string != "":
try:
self.fct_expr = sp.sympify(fct_string)
self.fct = sp.lambdify((self.x, self.y), self.fct_expr,
'numpy')
xmin, xmax, ymin, ymax = self.mySystem.Phaseplane.Plot.canvas.axes.axis(
)
# plot the function for an x-interval twice as big as the current window
deltax = (xmax - xmin) / 2
deltay = (ymax - ymin) / 2
plot_xmin = xmin - deltax
plot_xmax = xmax + deltax
plot_ymin = ymin - deltay
plot_ymax = ymax + deltay
pts_in_x = int(myConfig.read("Functions", "fct_gridPointsInX"))
pts_in_y = int(myConfig.read("Functions", "fct_gridPointsInY"))
fct_color = myConfig.read("Functions", "fct_color")
fct_linewidth = float(
myConfig.read("Functions", "fct_linewidth"))
x = np.arange(plot_xmin, plot_xmax, (xmax - xmin) / pts_in_x)
y = np.arange(plot_ymin, plot_ymax, (ymax - ymin) / pts_in_y)
X, Y = np.meshgrid(x, y)
myfunc = self.fct(X, Y)
# TODO: plots like y=1/x have a connection between -inf and +inf that is not actually there!
# plot function and put on function-stack
new_fct = self.mySystem.Phaseplane.Plot.canvas.axes.contour(
X,
Y,
myfunc, [0],
zorder=100,
linewidths=fct_linewidth,
colors=fct_color)
# new_fct = self.myGraph.plot_pp.axes.plot(xvalue, yvalue, label="fct", color="green")
self.fct_stack.append(new_fct)
self.mySystem.Phaseplane.Plot.update()
myLogger.message("function plot: 0 = " + fct_string)
except Exception as error:
# TODO: use handle_exception for this
myLogger.error_message(str(error))
else:
myLogger.error_message("Please enter function.")
def add(self):
try:
fct_string = str(self.mySystem.myPyplane.yLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.error_message("input error!")
myLogger.debug_message(str(exc))
fct_string = str(self.mySystem.myPyplane.yLineEdit.text())
if fct_string != "":
try:
self.fct_expr = sp.sympify(fct_string)
self.fct = sp.lambdify((self.x, self.y), self.fct_expr, 'numpy')
xmin, xmax, ymin, ymax = self.mySystem.Phaseplane.Plot.canvas.axes.axis()
# plot the function for an x-interval twice as big as the current window
deltax = (xmax - xmin) / 2
deltay = (ymax - ymin) / 2
plot_xmin = xmin - deltax
plot_xmax = xmax + deltax
plot_ymin = ymin - deltay
plot_ymax = ymax + deltay
pts_in_x = int(myConfig.read("Functions", "fct_gridPointsInX"))
pts_in_y = int(myConfig.read("Functions", "fct_gridPointsInY"))
fct_color = myConfig.read("Functions", "fct_color")
fct_linewidth = float(myConfig.read("Functions", "fct_linewidth"))
x = np.arange(plot_xmin, plot_xmax, (xmax - xmin) / pts_in_x)
y = np.arange(plot_ymin, plot_ymax, (ymax - ymin) / pts_in_y)
X, Y = np.meshgrid(x, y)
myfunc = self.fct(X, Y)
# TODO: plots like y=1/x have a connection between -inf and +inf that is not actually there!
# plot function and put on function-stack
new_fct = self.mySystem.Phaseplane.Plot.canvas.axes.contour(X, Y, myfunc, [0],
zorder=100,
linewidths=fct_linewidth,
colors=fct_color)
# new_fct = self.myGraph.plot_pp.axes.plot(xvalue, yvalue, label="fct", color="green")
self.fct_stack.append(new_fct)
self.mySystem.Phaseplane.Plot.update()
myLogger.message("function plot: 0 = " + fct_string)
except Exception as error:
# TODO: use handle_exception for this
myLogger.error_message(str(error))
else:
myLogger.error_message("Please enter function.")
def find_equilibrium(self, z_init):
""" hopf2.ppf has problems with this algorithm -> TODO: debug!!!
"""
# TODO: this try-loop is too long!
try:
if self.tgl:
# newton's method to find equilibrium points
iterlimit = 50
iter = 0
h = .000001
z_next = z_init
functionf = self.myWidget.mySystem.equation.rhs(z_init)
# allow for large/small solutions
errorlim = np.linalg.norm(functionf, np.inf) * 0.000001
while ((np.linalg.norm(functionf, np.inf) > errorlim) & (iter < iterlimit)):
iter = iter + 1
# now we calculate the jacobian
jacobian = np.eye(2)
for i in range(0, 2):
sav = z_next[i]
z_next[i] = z_next[i] + h
functionfhj = self.myWidget.mySystem.equation.rhs(z_next)
jac = (functionfhj - functionf) / h
jacobian[0, i] = jac[0]
jacobian[1, i] = jac[1]
z_next[i] = sav
z_next = z_next - np.linalg.solve(jacobian, functionf)
functionf = self.myWidget.mySystem.equation.rhs(z_next)
if iter > (iterlimit - 1):
fLag = [0, 0]
else:
fLag = [1, 1]
# TODO: this for loop is used twice: why not put it in a function?
for i in range(0, 2):
sav = z_next[i]
z_next[i] = z_next[i] + h
functionfhj = self.myWidget.mySystem.equation.rhs(z_next)
jac = (functionfhj - functionf) / h
jacobian[0, i] = jac[0]
jacobian[1, i] = jac[1]
z_next[i] = sav
#TODO: use list instead of array and safe casting
z_next = list(z_next)
# due to numerical errors, this is not sufficient and
# there could be multiple equilibria plotted where
# only one should be:
# calculate the distance to all existing equilibrium points
# if the distance is smaller than a certain value epsilon, it is
# assumed that this equilibrium point is already calculated
epsilon = 1e-4
if len(self.stack) == 0:
self.plot_equilibrium(z_next, jacobian)
self.jacobians[str(z_next)] = jacobian
return z_next
else:
# there are equilibria already
# if the distance to an existing equilibrium point is less
# than epsilon, do not plot
if not self.calculated_before(z_next):
myLogger.debug_message("Equilibrium Point already there!")
else:
self.plot_equilibrium(z_next, jacobian)
# add to jacobians
self.jacobians[str(z_next)] = jacobian
return z_next
# d_norm = [] # list with distance to equ. pts
#
# for ep in self.eqp_stack.keys():
# ep = ast.literal_eval(ep)
# x_val = z_next[0] - ep[0]
# y_val = z_next[1] - ep[1]
#
# d_norm.append(np.sqrt(x_val ** 2 + y_val ** 2))
#
# if any(d < epsilon for d in d_norm):
# myLogger.debug_message("Equilibrium Point already there!")
#
# else:
# self.plot_equilibrium(z_next, jacobian)
# # add to jacobians
# self.jacobians[str(z_next)] = jacobian
except Exception as error:
myLogger.error_message("Something strange happened while calculating the equilibrium")
if myConfig.read("Logging", "log_showDbg"):
myLogger.debug_message(error)
def add_function_to_plot(self):
""" will plot additional functions and put it on a stack
"""
self.x = sp.symbols('x')
self.y = sp.symbols('y')
self.fct = None
fct_txt = ""
try:
fct_txt = str(self.yLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.error_message("input error!")
myLogger.debug_message(str(exc))
if fct_txt != "":
try:
self.fct_string = str(self.yLineEdit.text())
self.fct_expr = sp.sympify(self.fct_string)
# self.fct = sp.lambdify(self.x,self.fct_expr,'numpy')
self.fct = sp.lambdify((self.x, self.y), self.fct_expr, 'numpy')
xmin, xmax, ymin, ymax = self.myGraph.get_limits(self.myGraph.plot_pp)
# plot the function for an x-interval twice as big as the current window
deltax = (xmax - xmin) / 2
deltay = (ymax - ymin) / 2
plot_xmin = xmin - deltax
plot_xmax = xmax + deltax
plot_ymin = ymin - deltay
plot_ymax = ymax + deltay
pts_in_x = int(myConfig.read("Functions", "fct_gridPointsInX"))
pts_in_y = int(myConfig.read("Functions", "fct_gridPointsInY"))
fct_color = myConfig.read("Functions", "fct_color")
fct_linewidth = float(myConfig.read("Functions", "fct_linewidth"))
x = np.arange(plot_xmin, plot_xmax, (xmax - xmin) / pts_in_x)
y = np.arange(plot_ymin, plot_ymax, (ymax - ymin) / pts_in_y)
X, Y = np.meshgrid(x, y)
# yvalue = self.fct(xvalue)
myfunc = self.fct(X, Y)
# TODO: plots like y=1/x have a connection between -inf and +inf that is not actually there!
# plot function and put on function-stack
new_fct = self.myGraph.plot_pp.axes.contour(X, Y, myfunc, [0],
zorder=100,
linewidths=fct_linewidth,
colors=fct_color)
# new_fct = self.myGraph.plot_pp.axes.plot(xvalue, yvalue, label="fct", color="green")
self.fct_stack.append(new_fct)
self.myGraph.update_graph(self.myGraph.plot_pp)
myLogger.message("function plot: 0 = " + self.fct_string)
except Exception as error:
handle_exception(error)
else:
myLogger.error_message("Please enter function.")
def add_function_to_plot(self):
""" will plot additional functions and put it on a stack
"""
self.x = sp.symbols('x')
self.y = sp.symbols('y')
self.fct = None
try:
fct_txt = str(self.yLineEdit.text())
except UnicodeEncodeError as exc:
myLogger.error_message("input error!")
myLogger.debug_message(str(exc))
if fct_txt != "":
try:
self.fct_string = str(self.yLineEdit.text())
self.fct_expr = sp.sympify(self.fct_string)
# self.fct = sp.lambdify(self.x,self.fct_expr,'numpy')
self.fct = sp.lambdify((self.x, self.y), self.fct_expr,
'numpy')
xmin, xmax, ymin, ymax = self.myGraph.get_limits(
self.myGraph.plot_pp)
# plot the function for an x-interval twice as big as the current window
deltax = (xmax - xmin) / 2
deltay = (ymax - ymin) / 2
plot_xmin = xmin - deltax
plot_xmax = xmax + deltax
plot_ymin = ymin - deltay
plot_ymax = ymax + deltay
pts_in_x = int(myConfig.read("Functions", "fct_gridPointsInX"))
pts_in_y = int(myConfig.read("Functions", "fct_gridPointsInY"))
fct_color = myConfig.read("Functions", "fct_color")
fct_linewidth = float(
myConfig.read("Functions", "fct_linewidth"))
x = np.arange(plot_xmin, plot_xmax, (xmax - xmin) / pts_in_x)
y = np.arange(plot_ymin, plot_ymax, (ymax - ymin) / pts_in_y)
X, Y = np.meshgrid(x, y)
#yvalue = self.fct(xvalue)
myfunc = self.fct(X, Y)
# TODO: plots like y=1/x have a connection between -inf and +inf that is not actually there!
# plot function and put on function-stack
new_fct = self.myGraph.plot_pp.axes.contour(
X,
Y,
myfunc, [0],
zorder=100,
linewidths=fct_linewidth,
colors=fct_color)
# new_fct = self.myGraph.plot_pp.axes.plot(xvalue, yvalue, label="fct", color="green")
self.fct_stack.append(new_fct)
self.myGraph.update_graph(self.myGraph.plot_pp)
myLogger.message("function plot: 0 = " + self.fct_string)
except Exception as error:
handle_exception(error)
else:
myLogger.error_message("Please enter function.")