[Matplotlib-users] Need assistance with inconsistent matplotlib plots from computer to computer...

Thomas Caswell tcaswell at gmail.com
Mon Sep 21 17:16:22 EDT 2020

Can you try plotting as

plt.plot(waferScan_fullScan_time_lst, waferScan, '-o', label="Laser
Readings", color='k')

which will put a marker at each point to get a better sense of what the
datapoints are and what parts are the interpretation is.


On Mon, Sep 21, 2020 at 3:58 PM Anthony Billings <ABillings at axustech.com>

> The data is sampled from an external device based on the speed (rpms) of a
> spinning platen. The y-axis values are just set up by a function to adjust
> according to the range of the sampled data.
> As I mentioned in the OP the program works well on most computers. It’s
> just this HP, i5 10th gen I’m having trouble with. It may or may not be a
> matplotlib issue, but I don’t know what else it could be.
> I was referred to trying to change the epoch in matplotlib 3.3.2 and
> seeing if I could get it to work there. That did not fix the issue either.
> *From:* Matplotlib-users <matplotlib-users-bounces+abillings=
> axustech.com at python.org> *On Behalf Of *Fabrice Silva
> *Sent:* Monday, September 21, 2020 12:07 PM
> *To:* matplotlib-users at python.org
> *Subject:* Re: [Matplotlib-users] Need assistance with inconsistent
> matplotlib plots from computer to computer...
> Le lundi 21 septembre 2020, Anthony Billings a écrit :
> I wrote a program that gathers data and plots it (y) over time (x). I use
> Python 3.7.7, with matplotlib 3.2.2, on Windows 10 Pro. I have compiled the
> program using pyinstaller, into an .exe and put it on additional computers
> to run. The program has worked properly on all computers, except an HP i5,
> running Windows 10. I've attached a picture of both graphs to help explain
> my problem... Good and Bad Graph <https://imgur.com/gallery/f08CiJZ>.
> The bad graph seems to display the data sporadically with long horizontal
> lines between data points. I have created a debug version that displays the
> data of the lists used for the x and y-axis and the lists are full with
> 80-110 values, so I know the data is being collected. It's just not
> displaying on the graph properly. I have tried uninstalling things and
> installing things, I have tweaked the priority in Task Manager, and I've
> tried running in SAFE mode to disable any extensions that may be
> interrupting in the background. Does anyone have ANY ideas or help? Thank
> you in advance!
> I have now tried installing Python 3.7.7 on the computer that displays the
> bad graph, and running the program directly from Python IDE and the display
> is still inaccurate. I'm at a total loss and would LOVE some help.
> Hi,
> Comparing the two plots, I am not sure matplotlib is the faulty one here.
> The y values just seem different between the two graphs. Did you tried to
> record the data and look at numerical values in order to check their
> consistency ? You may even transfer the data of the "bad plot" to the other
> computer (the good one), just to ensure whether it is a data problem or a
> plot problem...
> If they come from some experimental setup, maybe one of the devices is
> wrong...
> Fabrice
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users at python.org
> https://mail.python.org/mailman/listinfo/matplotlib-users

Thomas Caswell
tcaswell at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20200921/e47c3cec/attachment.html>

More information about the Matplotlib-users mailing list