Nope, that would be the latest *release* version, which would be 0.10. I’m 
using the latest *development* version that you can get from source forge. So 
yeah, that *could* be why my code isn’t working for you (though I don’t 
guarantee it).

There have been a lot of changes between the last release and the current 
development (like compatibility with PySide2, which is why I use the 
development). I keep wondering when they will make a new release, but it hasn’t 
happened yet.
---
Israel Brewster
Software Engineer
Alaska Volcano Observatory 
Geophysical Institute - UAF 
2156 Koyukuk Drive 
Fairbanks AK 99775-7320
Work: 907-474-5172
cell:  907-328-9145

> On Apr 11, 2020, at 10:06 AM, Daniele Dolci <[email protected]> wrote:
> 
> I would assume I am on the latest version, I installed it today. One 
> difference perhaps might be the operative system? I am using raspbian OS.
> 
> To install it I used 
> 
> sudo apt install python3-pyqtgraph
> 
> So I assume it gets the latest one, or not?
> 
> Il giorno sabato 11 aprile 2020 19:58:36 UTC+2, Israel Brewster ha scritto:
> One thought that just occurred to me: I’m using the latest development 
> version of pyqtgraph. Are you by any chance on the release version? That 
> could be the difference, theoretically, if so.
> 
> ---
> Israel Brewster
> Software Engineer
> Alaska Volcano Observatory 
> Geophysical Institute - UAF 
> 2156 Koyukuk Drive 
> Fairbanks AK 99775-7320
> Work: 907-474-5172
> cell:  907-328-9145
> 
>> On Apr 11, 2020, at 9:51 AM, Daniele Dolci <[email protected] <>> wrote:
>> 
>> So I tried this:
>> 
>> x = [x for x in range(1000)]
>> y = [x for x in range(1000)]
>> plotWidget = pg.PlotWidget(title="Ph")
>> plotWidget.setBackgroundBrush(QtGui.QBrush(QtCore.Qt.transparent, 
>> QtCore.Qt.NoBrush))
>> self._tab_layout.addWidget(plotWidget, 0, 0)
>> t = plotWidget.plot(x, y)
>> 
>> But the background is still white. I removed all the viewBox stuff and the 
>> set colors. I mean, this is very weird. If the plot accepts colors for pen 
>> and background in the format of RGBa, why wouldn't the transperency do the 
>> trick?
>> 
>> I have also tried using just plotItem, without the widget, but I wasn't able 
>> to add it to the layout so I couldn't really finish the test. 
>> 
>> Thanks for your time man, I appreciate!
>> Cheers,
>> 
>> Il giorno sabato 11 aprile 2020 19:42:31 UTC+2, Israel Brewster ha scritto:
>> No, I mis-spoke with that. I took another look at my code, and realized that 
>> I’m not doing *anything* with the view box. So try just doing the 
>> setBackgroudBrush on the plotWidget, but *don’t* set the background color on 
>> the view box at all. If that doesn’t work, then I’m probably missing 
>> something somewhere else in my code that does it…
>> 
>> ---
>> Israel Brewster
>> Software Engineer
>> Alaska Volcano Observatory 
>> Geophysical Institute - UAF 
>> 2156 Koyukuk Drive 
>> Fairbanks AK 99775-7320
>> Work: 907-474-5172
>> cell:  907-328-9145
>> 
>>> On Apr 11, 2020, at 8:37 AM, Daniele Dolci <[email protected] <>> wrote:
>>> 
>>> Thanks for the fast reply! 
>>> 
>>> I tried to add that line but didn't work. I then tried to apply it to the 
>>> plot item and to the view box, but on both I get the error:
>>> 
>>> plotWidget.getViewBox().setBackgroundBrush(QtGui.QBrush(QtCore.Qt.transparent,
>>>  QtCore.Qt.NoBrush))
>>> AttributeError: 'ViewBox' object has no attribute 'setBackgroundBrush'
>>> 
>>> Maybe I misunderstood what you meant by doing the same for the ViewBox?
>>> 
>>> Thanks again! 
>>> 
>>> 
>>> Il giorno sabato 11 aprile 2020 18:20:06 UTC+2, Israel Brewster ha scritto:
>>> Try:
>>> 
>>> plotWidget.setBackgroundBrush(QBrush(Qt.transparent, Qt.NoBrush))
>>> 
>>> There may be some other code needed as well, but that’s at least part of 
>>> it. you *may* need to do the same for the view box. So you had the right 
>>> idea, but perhaps not quite right?
>>> ---
>>> Israel Brewster
>>> Software Engineer
>>> Alaska Volcano Observatory 
>>> Geophysical Institute - UAF 
>>> 2156 Koyukuk Drive 
>>> Fairbanks AK 99775-7320
>>> Work: 907-474-5172
>>> cell:  907-328-9145
>>> 
>>>> On Apr 11, 2020, at 8:11 AM, Daniele Dolci <[email protected] <>> wrote:
>>>> 
>>>> Hi!
>>>> 
>>>> I have a main widget with a layout and a gradient as background. I want to 
>>>> add a series of plots with transperent background (basically I would like 
>>>> to only draw the foreground). I am having hardtimes making the background 
>>>> of the plot transperent. I tried lot of things, with this code I was 
>>>> expecting that I would be making all transparent, but it is actually white:
>>>> 
>>>> x = [x for x in range(1000)]
>>>> y = [x for x in range(1000)]
>>>> plotWidget = pg.PlotWidget(title="Ph")
>>>> plotWidget.setBackground((0, 0, 0, 0))
>>>> plotWidget.getViewBox().setBackgroundColor((0, 0, 0, 0))
>>>> self._tab_layout.addWidget(plotWidget, 0, 0)
>>>> pen = pg.mkPen(color=(255, 0, 0))
>>>> t = plotWidget.plot(x, y, pen=pen)
>>>> t.getViewBox().setBackgroundColor((0, 0, 0, 0))
>>>> 
>>>> So it looks like this, and I would:
>>>> 
>>>> <plot1.jpg>
>>>> 
>>>> 
>>>> And I would like to have it drawn on this background instead:
>>>> <plot2.jpg>
>>>> 
>>>> 
>>>> 
>>>> Any idea how to fix this?
>>>> 
>>>> Thanks!
>>>> 
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>>>> <plot1.jpg><plot2.jpg>
>>> 
>>> 
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