imageToArray AttributeError: 'NoneType' object has no attribute 'setsize'

[TerenceSkill]

Hi everybody,

I was trying to load and display a big image with a resolution over 20000x20000 and got an AttributeError for the imageToArray function.

After reducing the resolution it was working without any error, so I divided the image into multiple small images.

With the following code i still get the AttributeError shown below.

The error does not always occur at the same time. It varies between image 14 and 18.

I use pyqtgraph version 0.10.0 and PyQt5 version 5.12.2.

Thanks for your help.

from PyQt5 import QtGui

import pyqtgraph as pg

n = 1

while n <= 25:

    print(n)

    imgfile = str(n)

    img = QtGui.QImage(imgfile)

    img = img.convertToFormat(QtGui.QImage.Format_ARGB32_Premultiplied)

    imgArray = pg.imageToArray(img, copy=True)

    if n == 1:

        imgArrays = [imgArray]

    else:

        imgArrays.append(imgArray)

    n += 1

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Traceback (most recent call last):

  File "C:/Users/User/Project/test.py", line 11, in <module>

    imgArray = pg.imageToArray(img, copy=True)

  File "C:\Program Files (x86)\Python37-32\lib\site-packages\pyqtgraph\functions.py", line 1177, in imageToArray

    ptr.setsize(img.byteCount())

AttributeError: 'NoneType' object has no attribute 'setsize'

Process finished with exit code 1