scan1D liveplot not updating points

[jsaez8]

Hi all!
I'm new using qtt and while measuring with "scan1D" function I realized that the live plot does not work as expected.

I can see how the Y-axis updates, but the points are not shown. I took a look into the code but I didn't find the problem.

This is some dummy code that I wrote to show the problem:

import sys, os, tempfile
import numpy as np
%matplotlib inline
%gui qt
import matplotlib.pyplot as plt
import qcodes
from qcodes.plots.qcmatplotlib import MatPlot
from qcodes.plots.pyqtgraph import QtPlot
from qcodes.data.data_set import DataSet
from qtt.measurements.scans import scanjob_t  
import qtt
from qtt.instrument_drivers.gates import VirtualDAC
from qcodes.tests.instrument_mocks import DummyInstrument, DummyInstrumentWithMeasurement

# set data directory
path_save = r'K:\Jaime\Testing_qtt'
datadir = os.path.join(path_save, 'Test')
DataSet.default_io = qcodes.data.io.DiskIO(datadir)

dac = DummyInstrument('dac', gates=['ch1', 'ch2'])
dmm = DummyInstrumentWithMeasurement(name='dmm', setter_instr=dac)

station = qcodes.Station(dac, dmm)
mwindows = qtt.gui.live_plotting.setupMeasurementWindows(station, create_parameter_widget=False)
plotQ = mwindows['plotwindow']

# Checking the sensor
scanjob = scanjob_t({'sweepdata': dict({'param': station.dac.ch1,
                                        'start': 0.0, 'end': 30.0, 'step':1.0,
                                        'wait_time': 0.1}),
                                        'minstrument': [station.dmm.v1],
                                        'dataset_label': 'Test1D_liveplot'})

data1d = qtt.measurements.scans.scan1D(station, scanjob, liveplotwindow= None,location=None, verbose=0)

Using "scan2D" the updating works without problem, then it is something really particular for the 1D plot.

Could someone help me to solve this issue?
Thanks!
Jaime

[QFer]

Hi Jaime,
First of all, sorry for the late reply.
I tried to run your code and with a few small adjustments (had to create a QApp first and I changed the path_save to an existing directory on my machine) I run on it on Linux VM. I got the following output (see image). What did you expect differently?

Regards,

Fer

[peendebak]

@jsaez8

[jsaez8]

Hi,
thanks for the reply. My problem is that it does not update the plot point by point (what I expected that the code would do), it just shows all the points when the measurements are finished. Was this also the case for you?

I ran the code in Windows 10, I don't know if that could be a problem.

Jaime

[QFer]

@jsaez8
Hi,
In my case it did update point for point. Do you run the example from a jupyter notebook, because I didn't. Maybe that matters. I run qtt 1.2.4 on python 3.7.5.

Fer

[jsaez8]

Hi, it seems that the problem was running it in a jupyter notebook. Thank you!

Jaime