Re: [Matplotlib-users] histogram bug

[Eric F. <ef...@ha...>]

Oops, I replied to your previous message before seeing this one.

Still, the larger question remains: maybe we should do something to make 
it easier for users to understand what is going on when the transform 
chokes on log(0).  Changing numbers <=0 to a small positive number and 
issuing a warning would accomplish this, and I don't see much disadvantage.

Eric

John Hunter wrote:
>>>>>> "John" == John Hunter <jdh...@ac...> writes:
> 
>     John> You have to make sure your yaxis limits are strictly
>     John> positive, eg
> 
>     John>   ax.set_ylim(1e-3, 1e3) ax.set_yscale('log')
> 
> No that won't quite do it, sorry for the noise.  The problem is that
> the histogram bottom of the rectangle is zero by default, and
> transforming those vertices are causing the problem.  You need to use
> the "bottom" kwarg to set the bottom of the bars to be positive, eg
> 
> hist(rand(100), 20,  bottom=1e-3)
> 
> JDH
> 
> 
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