[IPython-User] ipython notebook help
Darren Govoni
darren@ontrenet....
Wed Jul 18 17:15:04 CDT 2012
Ok, I got it to work now. :)
On Wed, 2012-07-18 at 18:10 -0400, Darren Govoni wrote:
> Hi MinRK,
> I tried your notebook, but when I execute the cell "imshow(img)" no
> image is shown in the notebook.
> All the previous cells execute without error that I can tell.
>
> D
>
> On Wed, 2012-07-18 at 16:49 -0500, MinRK wrote:
>
> >
> >
> > On Wed, Jul 18, 2012 at 4:12 PM, Thomas Kluyver <takowl@gmail.com>
> > wrote:
> >
> > Hi Darren,
> >
> > On 18 July 2012 22:01, Darren Govoni <darren@ontrenet.com>
> > wrote:
> > > 1) Is there a thorough tutorial on notebook? From hello
> > world to the UI
> > > features?
> >
> >
> > There's a folder of example notebooks, including an
> > introduction one.
> > They may have come with your installation, depending on
> > where you got
> > it from, or you can get them here:
> > https://github.com/ipython/ipython/tree/master/docs/examples/notebooks
> >
> > > 2) I want to do some image processing with it. Is there an
> > example (or is it possible) > to interact with image data?
> > e.g. run some ipython code, return/display the image result?
> >
> >
> > It's certainly possible, although I don't know if there's an
> > example
> > yet. For simple cases, matplotlib has imread() and imshow()
> > functions.
> > Working with PIL might need a little integration, but
> > hopefully just a
> > few extra lines.
> >
> >
> >
> > Here is a notebook I made while trying to follow along with one of
> > Fernando's Py4Science tutorials, which covered working with image
> > data:
> >
> >
> > https://gist.github.com/3139142
> >
> >
> > It includes the code for automatically displaying PIL objects as
> > images in the notebook, which I added later:
> >
> >
> > from io import BytesIO
> >
> >
> > def display_image(img, format='PNG'):
> > fp = BytesIO()
> > img.save(fp, format=format)
> > return fp.getvalue()
> >
> >
> > ip = get_ipython()
> > png_formatter = ip.display_formatter.formatters['image/png']
> > png_formatter.for_type_by_name('Image', 'Image', display_image)
> >
> >
> > which we might want to have on by default.
> >
> >
> > -MinRK
> >
> >
> >
> >
> >
> > Best wishes,
> > Thomas
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> >
> >
> >
> >
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