Plot problem.. ?? No sign at all

[Ritchy lelis]

On 6 jul, 16:18, Alan G Isaac <alan.is... at gmail.com> wrote:
> On 7/6/2010 8:05 AM, Ritchy lelis wrote:
>
> >  1 - "import numpy as np
> >       import matplotlib.pyplot as plt"
>
> >       In what help's me making the call's of the libraries that way?
>
> http://bytebaker.com/2008/07/30/python-namespaces/
>
> >  2 - What's the instruction linspace means/does?
>
>  >>> help(np.linspace)
>          Help on function linspace in module numpy.core.function_base:
>
>          linspace(start, stop, num=50, endpoint=True, retstep=False)
>              Return evenly spaced numbers over a specified interval.
>
>              Returns `num` evenly spaced samples, calculated over the
>              interval [`start`, `stop` ].
>
> >  3 - Last but more important: "V0 = ... #create an array" if I
> >  understood, there i'm supposed to introduce the for loop as in my
> >  initial example. correct?
>
> It is better to create your arrays without looping,
> if possible.  But create it however you wish.
> (Note than numpy arrays have a fixed length;
> create a Python list if you wish to append to it.)
>
> Cheers,
> Alan Isaac

-------------------------------------------------

My intention with de for loop was to iterate each point of the arrays
Vi and Vref at the math calculations. The V0 it's the result of the
math expressions between the Vi and Vref. I can't just create one V0
by a function set by parametters (i don't see how).

Could you give a clue?

Cheers

Ritchy