Re: [Matplotlib-users] XKCD style graphs?

[Damon M. <dam...@gm...>]

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
>
>
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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 :)

-- 
Damon McDougall
http://www.damon-is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom