Re: [Matplotlib-users] XKCD style graphs?

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

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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