I submitted a correction to the code in your pastebin link below. Revisit the link (http://pastebin.com/vSbkXDzE) and run that code.
From: Waléria Antunes
Sent: Thursday, July 29, 2010 12:08 PM
Subject: Re: [Matplotlib-users] Matplotlib-users Digest, Vol 50, Issue 80
I made the changes as bellow and it displays the x-axis values formatted as expected, see my current image and my code. But, now i need to change the scale and the numbers of decimal places in order to appear on the graph like this: 3.0 3.1 3.2 ...... 3.4
My code: http://pastebin.com/vSbkXDzE
Can you help me?