On Wednesday, July 11, 2012 2:50:11 PM UTC+2, Zachary Pincus wrote:

I wonder if this has to do with the type-promotion behavior changes in a recent numpy version? What is the dtype of "summation" below?

two.dtype and summation.dtype return "int32" .dtype.type is returning "<type 'numpy.int32'>" in both cases.
I just tried it on a diffrent PC. Same problem on a Win32 XP 32bit system with EPD 7.2-2 Python 2.7.2

In summary.
It is working on :
Python 2.7.1 |EPD 7.0-2 (32-bit)| Win 7 32
Python 2.7.2 |EPD 7.2-2 (64-bit)| Mac OSX
And not working on:
Python 2.7.3 |EPD 7.3-1 (64-bit)| Win 7 64
Python 2.7.2 IEPD 7.2-2 (32-bit)| Win XP

On Jul 10, 2012, at 9:35 AM, Sigmund wrote:

> Hey!
>
> Whil writing the test code I found out that saving the array by itself doesn't cause the error. Only after summing two arrays it fails.
>
> import numpy as np
> import skimage.io as io
> io.use_plugin("freeimage", "imread")
> one = np.ones([2048,2048],dtype=np.int32)
> two = np.zeros([2048,2048],dtype=np.int32)
> summation = one + two
> io.imsave("test.tif",summation, plugin="freeimage")
>
> not using the freeimage plugin in not failing.
>
> Siggi