frequency count or number of occurences of a number in an array

[Paul Hankin]

On Mar 12, 10:26 am, Larry <larry.cebu... at gmail.com> wrote:
> I'm new to Python. I have a file (an image file actually) that I need
> to read pixel by pixel. It's an 8-bit integer type. I need to get the
> statistics like mean, standard deviation, etc., which I know a little
> bit already from reading numpy module. What I want to know is how to
> get the number of occurences of numeric element in an array. Say,

Something like this should do the job:

histogram = [0] * 256
for x in my_array:
    histogram[x] += 1

--
Paul Hankin