diff options
Diffstat (limited to 'examples/plotUpdateImageFromThread.py')
| -rw-r--r-- | examples/plotUpdateImageFromThread.py | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/examples/plotUpdateImageFromThread.py b/examples/plotUpdateImageFromThread.py index 5850263..c594a8a 100644 --- a/examples/plotUpdateImageFromThread.py +++ b/examples/plotUpdateImageFromThread.py @@ -1,7 +1,6 @@ -# coding: utf-8 # /*########################################################################## # -# Copyright (c) 2017-2018 European Synchrotron Radiation Facility +# Copyright (c) 2017-2021 European Synchrotron Radiation Facility # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal @@ -72,7 +71,7 @@ class UpdateThread(threading.Thread): self.running = True super(UpdateThread, self).start() - def run(self, pos={'x0': 0, 'y0': 0}): + def run(self, pos={"x0": 0, "y0": 0}): """Method implementing thread loop that updates the plot It produces an image every 10 ms or so, and @@ -89,20 +88,25 @@ class UpdateThread(threading.Thread): x = numpy.linspace(-1.5, 1.5, Nx) y = numpy.linspace(-1.0, 1.0, Ny) xv, yv = numpy.meshgrid(x, y) - signal = numpy.exp(- ((xv - pos['x0']) ** 2 / sigma_x ** 2 - + (yv - pos['y0']) ** 2 / sigma_y ** 2)) + signal = numpy.exp( + -( + (xv - pos["x0"]) ** 2 / sigma_x**2 + + (yv - pos["y0"]) ** 2 / sigma_y**2 + ) + ) # add noise signal += 0.3 * numpy.random.random(size=signal.shape) # random walk of center of peak ('drift') - pos['x0'] += 0.05 * (numpy.random.random() - 0.5) - pos['y0'] += 0.05 * (numpy.random.random() - 0.5) + pos["x0"] += 0.05 * (numpy.random.random() - 0.5) + pos["y0"] += 0.05 * (numpy.random.random() - 0.5) # If previous frame was not added to the plot yet, skip this one if self.future_result is None or self.future_result.done(): # plot the data asynchronously, and # keep a reference to the `future` object self.future_result = concurrent.submitToQtMainThread( - self.plot2d.addImage, signal, resetzoom=False) + self.plot2d.addImage, signal, resetzoom=False + ) def stop(self): """Stop the update thread""" @@ -116,18 +120,19 @@ def main(): # Create a Plot2D, set its limits and display it plot2d = Plot2D() + plot2d.getIntensityHistogramAction().setVisible(True) plot2d.setLimits(0, Nx, 0, Ny) - plot2d.getDefaultColormap().setVRange(0., 1.5) + plot2d.getDefaultColormap().setVRange(0.0, 1.5) plot2d.show() # Create the thread that calls submitToQtMainThread updateThread = UpdateThread(plot2d) updateThread.start() # Start updating the plot - app.exec_() + app.exec() updateThread.stop() # Stop updating the plot -if __name__ == '__main__': +if __name__ == "__main__": main() |