Plotting histograms

[Roberto Bonvallet]

amitsoni.1984 at gmail.com wrote:
> hi, I have some values(say from -a to a) stored in a vector and I want
> to plot a histogram for those values. How can I get it done in python.
> I have installed and imported the Matplotlib package but on executing
> the code
> [N,x]=hist(eig, 10) # make a histogram
> I am getting an error saying   "NameError: name 'hist' is not
> defined".
> 
> Is there any other way to plot histograms over a given range?

>>> # create random vector
... from random import randrange
>>> a = 5
>>> v = [randrange(-a, a+1) for i in xrange(100)]
>>>
>>> # print histogram
... for i in range(-a, a+1):
...     print "%+d %s" % (i, '*' * v.count(i))
...
-5 *********
-4 *****
-3 *****
-2 **********
-1 **********
+0 *****
+1 ************
+2 *******
+3 *****
+4 ********************
+5 ************


:)
-- 
Roberto Bonvallet