Re: [matplotlib-devel] logit scale for frequencies

[Fabio Z. <fab...@tu...>]

@Pierre: Yeah, my code looks 99% the same like yours. I'll make a PR
starting from a mix of both - probably closer to yours than to mine :-P

@Jens: symlog extends to infinity, logit has a compact range, that's why
it's not exactly the same.

Ok I'll make a pull request. Shall I start with a test that fails, then
add the function and show it succeeds? or shall I start directly with
the code and add a test later on?

Cheers,
Fabio

On 11/03/2014 12:58 PM, Thomas Caswell wrote:
> Please create a pull request.
> 
> This sounds reasonable to me, but I have never seen a plot with that
> scale and don't really understand it from your description. Seeing the
> code usually clarifies things.
> 
> Tom
> 
> On Mon, Nov 3, 2014, 05:58 Fabio Zanini <fab...@tu...
> <mailto:fab...@tu...>> wrote:
> 
>     Dear all,
> 
>     I've been using matplotlib with great satisfaction for a few years, but
>     one feature I've been missing is a "logit" scale. This is essentially a
>     nonlinear scale that is log both towards 0+ and log towards 1-. It is
>     useful when one has frequencies in a population (i.e. floats between 0
>     and 1) and both rare events and very common ones are interesting.
> 
>     For instance, say you ask about the fraction of people with blue eyes in
>     various world populations, you want to spot even tiny deviations from
>     zero or one.
> 
>     I have coded a scale according to matplotlib's documentation and it
>     works well, so I was wondering whether you are interested into merging
>     it into the the main repository. I think it'd be useful because lots of
>     people have such frequency data, especially now that matplotlib is
>     becoming popular in the biology/social sciences research communities.
> 
>     If there is interest, I'll just start a pull request on github and try
>     to adapt the code to your coding style. It's already PEP8 and similia.
> 
>     Thanks. Cheers,
>     Fabio
> 
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