[IPython-User] ipython notebook help

Darren Govoni darren@ontrenet....
Sun Jul 22 16:06:26 CDT 2012


Good examples. Thanks for this.

But is it possible to attach remote engines to the notebook cluster?
Or attach the notebook to a running ipcontroller?

On Thu, 2012-07-19 at 20:50 -0500, MinRK wrote:

> 
> 
> 
> On Thu, Jul 19, 2012 at 6:03 PM, Darren Govoni <darren@ontrenet.com>
> wrote:
> 
>         Do any of the image processing cells in your image notebook
>         (which is great help btw!) implicitly leverage
>         ipython's parallel flows at all?
>         
> 
> 
> Nope.  It's just a transcript of a demo doing basic work with images
> in numpy, matplotlib, and PIL.
> 
> 
> The parallel code is not terribly hidden or implicit, so it should be
> apparent when it is in use.
> 
> 
> For that, you should check out our tutorial notebooks from the
> presentation this week.
>  
>         
>         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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