Re: [Matplotlib-users] Runtime Error on Solaris - Error Closing Dupe File Handle

[Thomas C. <tca...@gm...>]

Bryan,

If you subscribe to the list you will be able to post with out moderation.

Does this happen with any of the other sample data?

I don't think that `get_sample_data` is doing you any good here as you are
passing it an absolute path (from `os.getcwd()`) which is passed into
`os.path.join` which when it encounters and absolute path discards
everything to the left so that line is just returning back your input.

Does it work to open any other png or does _only_ this png have issues?

You are reaching into the nominally private parts of the mpl api here, I
would suggest using `mpl.image.imread` instead.

It might be worth using something like PIL/pillow, imread (
https://pypi.python.org/pypi/imread), imageio (https://imageio.github.io/)
or scikit-image for alternate implementations of png readers.

None of the core developers have access to a Solaris machine so it is very
difficult for us to provide much better help on this.

Tom

On Sun, May 24, 2015 at 1:38 PM Bryan Williams <bry...@gm...>
wrote:

> Good afternoon,
>
>
>
> My name is Bryan Williams. I work for the Florida Forest Service in their
> Forest Logistics and Support Bureau.
>
>
>
> I’m working on a program that takes weather data and visualizes it using
> matplotlib and Basemap. I’m currently having an issue with matplotlib 1.4.3
> for Python 3.4.3 running under Solaris 5.10. I am getting a Runtime Error
> whenever I try calling the read_png file from matplotlib._png. (I’m using
> this to add a small .png file of the Forest Service’s sheld to the
> picture). The error is the following:
>
>
>
> Traceback (most recent call last):
>
>   File "drawmaps.py", line 845, in <module>
>
>     arr_lena = read_png(fn)
>
> RuntimeError: Error closing dupe file handle
>
>
>
> I don’t quite understand the error I’m getting, and as you can see, the
> traceback gives very little information. I also tried Google for help, but
> to no avail; entering the error message as is into Google doesn’t return
> anything relating to the problem, and putting quotes around “Error closing
> dupe file handle” yields about 10 results, with one of them being an
> unanswered question from 2014 regarding the same issue.
>
>
>
> As per your request on the website, here’s what I get from uname –a:
>
>
>
> SunOS [server name withheld] 5.10 Generic_141444-09 sun4v sparc
> SUNW,SPARC-Enterprise-T5220
>
>
>
> I built Python 3.4.3 from source and installed matplotlib through pip, and
> didn’t make any changes to the matplotlibrc file.
>
>
>
> I was able to reproduce the problem again running these commands in the
> Python interactive prompt, which emulates the snippet of script that causes
> the error:
>
>
>
> Python 3.4.3 (default, May 15 2015, 13:52:23)
>
> [GCC 4.9.2] on sunos5
>
> Type "help", "copyright", "credits" or "license" for more information.
>
> >>> from matplotlib._png import read_png
>
> >>> from matplotlib.cbook import get_sample_data
>
> >>> import os; path=os.getcwd()
>
> >>> fn = get_sample_data(path + '/resources/shield.png', asfileobj=False)
>
> >>> arr_lena = read_png(fn)
>
> Traceback (most recent call last):
>
>   File "<stdin>", line 1, in <module>
>
> RuntimeError: Error closing dupe file handle
>
>
>
>
>
> If you’d like a copy of the problem script, please let me know. Any and
> all help is greatly appreciated.
>
>
>
> Thank you in advance!
>
>
>
> -- BMW
>
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