Hi Eric,
first of all thank you for your reply.
My problem is so simple that it is diffucult to explain :)
may be pictures speak better than me.
Let me show you 2 simple pictures and you'll understand:

this is what i want to do: (done with excel)
http://89.96.100.40/~dante/wish.png
(2 simple bars centered in a short enough x axis)

and this is what i have with matplotlib:
http://89.96.100.40/~dante/hist.png

Thank you again for your time,
dp


2009/2/23 Eric Firing <efir...@hawaii.edu>:
> Dante Plicato wrote:
>>
>> Hi all,
>> i just want to have a simple 2-bar histogram,
>> and my problem is that i want my axis to be with NON-squared aspect,
>> i.e. the y-axes automatically scaled (and this yet works this way),but
>> the x-axis to be as long as it need to display  2 little bars.
>> Instead i get a squared graph with 2 big bars.
>> I also tried using something like       "plt.axis([0,1,0,mymax*1.2])",
>> changing the second value, but this affects the scale and NOT my
>> picture aspect ratio.
>
> I'm sorry; I haven't been able to figure out what you want the plot to look
> like, and I suspect others on the list may be having the same problem.
>
> When you describe the bars as "big" or "little", are you referring to width?
>  Height?  spacing?
>
> When I run your script, I don't see anything that I would describe as
> "squared aspect".  What physical dimensions would you like the axes to have,
> and what physical dimensions would you like the bars to have?
>
> Maybe you can make a sketch using characters to show what you
> want the plot to look like, e.g.,
>
> ___________________
> |                 |
> |   ____          |
> |   |  |  ____    |
> |   |  |  |  |    |
> -------------------
>
> Also, is there a reason you are using two calls to "bar" instead of one?
> Note that arguments such as color can be sequences.
>
> Eric
>
>>
>>
>> This is my simploe source:
>>
>> import numpy as np
>> import matplotlib
>> import matplotlib.pyplot as plt
>>
>> N = 1
>> ind = np.arange(N)
>> width = 0.05
>>
>> rects2 = plt.bar(ind+width, 100, width, color='g')
>> rects1 = plt.bar(ind, 200, width, color='b')
>>
>> I tried many things, figsize, axis.. i have no idea,
>> probably because i'm new to matplotlib programming
>>
>> Thank you very much for any help,
>> my best
>>
>>
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>

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