Re: [Matplotlib-users] XKCD style graphs?

[Michael D. <md...@st...>]

This is just too cool of an idea to pass up -- I'm going to see if I can 
put together a PR that does this using the C++ path filtering stuff so 
it would be available everywhere.

Mike

On 10/04/2012 10:11 AM, Michael Droettboom wrote:
> Yes -- this would be a great application for the path filtering
> infrastructure that matplotlib has.
>
> Mike
>
> On 10/04/2012 08:29 AM, Phil Elson wrote:
>> Nice challenge Fernando!
>>
>> Damon, I love the solution! I do wonder whether we could do some
>> quirky transform on the lines to achieve a similar result, rather than
>> manipulating the data before plotting it. The benefit is that
>> everything should then get randomly Xkcd-ed automatically - maybe I
>> will save that one for a rainy day....
>>
>> Thanks for posting!
>>
>>
>>
>> On 4 October 2012 11:31, Damon McDougall <dam...@gm...> wrote:
>>> On Thu, Oct 4, 2012 at 10:44 AM, Damon McDougall
>>> <dam...@gm...> wrote:
>>>> On Thu, Oct 4, 2012 at 10:02 AM, Pierre Haessig
>>>> <pie...@cr...> wrote:
>>>>> Hi Fernando,
>>>>>
>>>>> Le 04/10/2012 09:16, Fernando Perez a écrit :
>>>>>> This would make for an awesome couple of examples for the gallery, the
>>>>>> mathematica solutions look really pretty cool:
>>>>>>
>>>>>> http://mathematica.stackexchange.com/questions/11350/xkcd-style-graphs
>>>>> I've never used Mathematica so that it's pretty difficult for me to
>>>>> understand the following lines of code which I guess do the main job of
>>>>> distorting the image
>>>>>
>>>>> xkcdDistort[p_] := Module[{r, ix, iy},
>>>>>      r = ImagePad[Rasterize@p, 10, Padding -> White];
>>>>>      {ix, iy} =
>>>>>       Table[RandomImage[{-1, 1}, ImageDimensions@r]~ImageConvolve~
>>>>>         GaussianMatrix[10], {2}];
>>>>>      ImagePad[ImageTransformation[r,
>>>>>        # + 15 {ImageValue[ix, #], ImageValue[iy, #]} &, DataRange ->
>>>>> Full], -5]];
>>>>>
>>>>>
>>>>> Is there somebody there that can describe this algorithm with words
>>>>> (English or Python ;-)) ?
>>>>>
>>>>> I feel like the key point is about adressing the rasterized plot image
>>>>> "r" with some slightly randomized indices "ix" and "iy". However, I
>>>>> really don't get the step that generates these indices.
>>>>>
>>>>> Best,
>>>>> Pierre
>>>> I believe this is in your interests: http://i.imgur.com/5XwRO.png
>>>>
>>>> Here's the code: https://gist.github.com/3832579
>>>>
>>>> Disclaimer: The code is ugly; don't judge me. Also, I installed the
>>>> Humor Sans font but I couldn't get mpl to find it. Oh well :)
>>> I got the font working :) http://i.imgur.com/Dxemm.png
>>>
>>> --
>>> Damon McDougall
>>> http://www.damon-is-a-geek.com
>>> B2.39
>>> Mathematics Institute
>>> University of Warwick
>>> Coventry
>>> West Midlands
>>> CV4 7AL
>>> United Kingdom
>>>
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