As Luke mentioned, this is fixed on the develop branch. For what it's
worth: functions.py is at the top level of my pyqtgraph installation.
At some point between May and now, I started using the develop branch on
github (discarding my changes). So I cannot tell you if my solution works
with numpy 11.1.1. I can confirm that the pyqtgraph develop branch does
work.
On Friday, September 30, 2016 at 2:00:10 PM UTC+1, alexfrigo wrote:
>
> Thanks, Dane.
>
> I am trying to plot some level curves with the pyqtgraph
> library-->isocurve, but i get the same error.
>
> Does your solution work also with numpy 11.1.1?
> Which file do I have do edit, exactly? I can't find any "functions.py" on
> my PC.
>
> Thank you.
>
> Il giorno domenica 6 dicembre 2015 00:08:17 UTC+1, Dane Austin ha scritto:
>>
>> I got it working with numpy 1.10.1 with the following small changes:
>>
>> around line 2030 of functions py:
>> added astype(np.uint16) to give
>>
>> index += (fields[i,j,k] * 2**vertIndex).astype(np.ubyte)
>>
>>
>> around line 2100:
>> added astype(np.uint16) to give
>>
>> verts[...,:3] += cells[:,np.newaxis,np.newaxis,:].astype(np.uint16) ## we
>> now have indexes into cutEdges
>>
>>
>> On Wednesday, November 25, 2015 at 6:56:03 PM UTC, Ryan Martin wrote:
>>>
>>> Hi all,
>>> I am not sure if this is a problem with my system or just that I
>>> shouldn't use numpy 1.10.1, but figured I'd report my findings. I was just
>>> testing different examples accessed with the python -m
>>> pyqtgraph.examples command. The isosurface example under 3D Graphics
>>> fails to run on my system when numpy 1.10.1 is installed with the following
>>> error:
>>>
>>> Traceback (most recent call last):
>>> File "<stdin>", line 49, in <module>
>>> File
>>> "C:\Users\rmartin\Anaconda3\lib\site-packages\pyqtgraph\functions.py", line
>>> 2030, in isosurface
>>> index += fields[i,j,k] * 2**vertIndex
>>> TypeError: Cannot cast ufunc add output from dtype('int32') to
>>> dtype('uint8') with casting rule 'same_kind'
>>>
>>> If I then revert the numpy package to 1.9.3 using:
>>>
>>> conda install numpy=1.9 -f
>>>
>>> and rerun the same example of 3D Graphics > Isosurface, no error is
>>> generated, and the example displays as intended.
>>>
>>> All other 3D Graphics examples seem to run without issue for both
>>> versions of numpy. The following other examples run with numpy 1.9.3
>>> but fail with similar cast errors under numpy 1.10.1:
>>>
>>> GraphicsItems > IsocurveItem, ImageItem-Video, ImageItem-Draw
>>>
>>> I am using a downloaded .zip from https://github.com/pyqtgraph/pyqtgraph
>>> version 0.9.10, installed to my anaconda distribution with python
>>> setup.py install. Let me know if there is other information to provide.
>>>
>>> Should numpy 1.10.1 work for all examples? is it recommended to not use
>>> the updated numpy? Maybe there is something else wrong with my system..?
>>>
>>> Thanks,
>>> Ryan
>>>
>>>
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