Re: [Matplotlib-users] data grid problem

[Damon M. <dam...@gm...>]

On Thu, Oct 11, 2012 at 1:52 PM, Benjamin Root <ben...@ou...> wrote:
>
>
> On Thursday, October 11, 2012, Damon McDougall wrote:
>>
>> On Wed, Oct 10, 2012 at 3:55 PM, Benjamin Root <ben...@ou...> wrote:
>> >
>> >
>> > On Wed, Oct 10, 2012 at 9:40 AM, rand0m <ra...@0x...> wrote:
>> >>
>> >> Hello,
>> >>
>> >> I'm new to matplotlib and I hope you can help me out with my question.
>> >> When drawing for example a Rectangle() I have to specify it like the
>> >> following:
>> >> rect = Rectangle((1, 3), 2, 20, facecolor="#aaaaaa")
>> >>
>> >> Where 2 is the length and 20 is the height. (1,3) is for xy.
>> >>
>> >> Imagine a coordination system where x-axis should represent the value 0
>> >> to 100. I would like to draw the rectangle from 50 to 60 on x-axis.  So
>> >> I would specify:
>> >>
>> >> rect = Rectangle((50, 3), 10, 20, facecolor="#aaaaaa")
>> >>
>> >> But this does not work as desired because at the xtick 50 the x-axis
>> >> does not "hold" the value 50 but 5 because I made xticks 1-100 with
>> >> step
>> >> 10. So my x-axis "holds" the values 1-10. But I need 1-100.
>> >>
>> >> If anyone knows what Im missing I d be glad to hear about it :-).
>> >>
>> >> thank you
>> >>
>> >
>> > I am not quite sure I understand what you mean.  Can you attach an image
>> > of
>> > the plot you made so far?
>> >
>> > Ben Root
>>
>> I'm not sure if adding a patch autoscales the view, try
>>
>> rect = Rectangle((50, 3), 10, 20, facecolor="#aaaaaa")
>> ax.add_patch(rect)
>> ax.set_xlim(0, 100)
>> ax.set_ylim(0, 25)
>>
>
> We managed to solve it, but apparently it was off-list.  Essentially, I
> showed him how to use a MultipleLocator to control the axis ticks, rather
> than labeling them manually at a different scale.
>
> Ben Root

I thought that might have been the problem. Cheers for the follow-up Ben.

-- 
Damon McDougall
http://www.damon-is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom