Fernando Perez wrote:
> On Fri, Dec 18, 2009 at 2:28 PM, Andrew Straw <straw...@astraw.com> wrote:
>   
>> (This still leaves open the question of what the notches actually _are_...)
>>     
>
> No idea.  I'd still leave the code instead written as
>
> notch_max = med + (iq/2) * (pi/np.sqrt(row))
>   
Further searching turned this up: 
http://seismo.berkeley.edu/~kirchner/eps_120/Toolkits/Toolkit_01.pdf

It says that

median +/- 1.57 * (iq / sqrt(n)) is the median, plus or minus its standard 
error.


I can't find any further support for this notion, though.

I've decided not to use notches on my own plots, so I'm leaving this 
issue for now...

-Andrew

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