Re: [Matplotlib-users] ramp shaped bars?

[Jim F. <jfo...@gm...>]

Well, what do you know? For once, the call of the noob, "Hey! there must 
be a bug" speaks truth.
Thanks, Angus! I added a little code to duplicate the last point until 
the array length is at least 5, and everything looks just fine.


On 03/25/2011 01:10 PM, Angus McMorland wrote:
> On 25 March 2011 07:31, jford14685<jfo...@gm...>  wrote:
>> I am a newbie Python programmer trying to make 3d barplots like
>> http://matplotlib.sourceforge.net/examples/mplot3d/bars3d_demo.html this
>> one on the Matplotlib site.
>>
>> When I run the demo source (python bars3d_demo.py) it works fine. I then
>> changed the way xs and ys are assigned, to
>>   xs = np.array([1.,2.,3.])      # was xs = np.arange(20)
>>   ys = np.array([1.,2.,3.])      # was ys = np.random.rand(20)
>>   ax.bar(xs, ys, zs=1, zdir='y', color='r', alpha=0.8)
>>   (ditto for two other data sets)
>>
>> Now the bars are triangles. The right side of each bar is of the correct
>> height, but the left side of each bar starts at zero.
> Here's another data point. My guess is this is a bug with Axes3D: I
> can recreate the problem with 3 bars, but with>4 bars everything
> works okay. On my setup, with exactly 4 bars, the leftmost edge of the
> bars doesn't get a border, so  something possibly related is going on
> there too.
>
> Angus.