Hi Eric,

You solved my problem; I called axis after the call to plot and the 
min-max obeyed my explicit definition.

The version of matplotlib that I am running is "python-matplotlib - 
0.99.0-1ubuntu1 (amd64)".
Sorry for the incomplete code snippet that I submitted with my initial 
request. In the future I will submit working code.
Thank you for your swift response and thanks to all the matplotlib 
developers.

Sincerely,
Lee

> On 01/24/2011 02:49 PM, Lionel (Lee) Brooks 3rd wrote:
>> > Hello Gentlepeople,
>> >
>> > I am plotting an integer array using: matplotlib.pyplot.plot().
>> > For my purposes it is imperative that the x-axis be explicitly defined.
>> > I have tried to achieve this by using: matplotlib.pyplot.axis(v).
>> > Where v is a list of integer values corresponding to the desired axes
>> > limits [xmin, xmax, ymin, ymax].
>> > However, the x-axis that is displayed does not obey my explicit xmax
>> > declaration; the value is rounded up.
>> >
>
>
> I am not seeing the problem when I try what I think is a minimal 
> example; what version of mpl are you using?  And have you tried calling 
> axis after the call to plot?  This might have been necessary in some 
> earlier versions; I don't recall.
>
> (In ipython -pylab, my example was this:
>
> ax1 = gca()
> ax1.axis([0,9.9,0,9.9])
> ax1.plot([1,2])
> draw()
>
> in which no rounding occurs.)
>   
>   



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