Bug with exporter on Ubuntu 16 and python 2.7

[François]

Dear all,

I recently updated pyqtgraph from 0.9 to 0.10 and now have a problem with the exporter.

The same bug appears in the example code given in the documentation:
http://www.pyqtgraph.org/documentation/exporting.html

This is what I get:
Python 2.7.12 (default, Nov 19 2016, 06:48:10)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyqtgraph as pg
>>> import pyqtgraph.exporters
>>> plt = pg.plot([1,5,2,4,3])
>>> exporter = pg.exporters.ImageExporter(plt.plotItem)
>>> exporter.parameters()['width'] = 100
>>> exporter.export('fileName.png')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/pyqtgraph/exporters/ImageExporter.py", line 70, in export
    bg = np.empty((self.params['width'], self.params['height'], 4), dtype=np.ubyte)
TypeError: 'float' object cannot be interpreted as an index

Best
François

[vas...@gmail.com]

quick fix:

change ImageExporter.py:

bg = np.empty((self.params['width'], self.params['height'], 4), dtype=np.ubyte)

to:
bg = np.empty((int(self.params['width']), int(self.params['height']), 4), dtype=np.ubyte)

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[François Posseik]

It works! Thanks.

François

On 02/10/2017 05:33 AM, vas...@gmail.com wrote:
> quick fix:
> change *ImageExporter.py*:
> *bg = np.empty((self.params['width'], self.params['height'], 4),
> dtype=np.ubyte)*
> to:
> *bg = np.empty((int(self.params['width']), int(self.params['height']),
> 4), dtype=np.ubyte)*

> send an email to pyqtgraph+...@googlegroups.com
> <mailto:pyqtgraph+...@googlegroups.com>.

> To view this discussion on the web visit
> https://groups.google.com/d/msgid/pyqtgraph/f8558f05-4cad-4438-9ce6-fa51b5f3c973%40googlegroups.com

> <https://groups.google.com/d/msgid/pyqtgraph/f8558f05-4cad-4438-9ce6-fa51b5f3c973%40googlegroups.com?utm_medium=email&utm_source=footer>.

> For more options, visit https://groups.google.com/d/optout

> <https://groups.google.com/d/optout>.

>
>
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