Re: Understanding empirical_pdf

[Marco Atzeri]

On 10/27/2014 1:34 PM, Jose wrote:
> Hello.
>
> In octave 4.8.1, while
> ->
> empirical_cdf ([0:0.1:1], rand(1e3,1))
> <-
> returns values of a cdf,
> ->
> empirical_pdf ([0:0.1:1], rand(1e3,1))
> <-
> returns all zero. This behaviour is somehow counter-intuitive to me. I
> would like to understand if this is intended and why.

as none of the [0:0.1:1] are in the rand(1e3,1)
the probability of each one is zero

See as comparison:

 empirical_pdf ([0:0.1:1], [0:0.05:1])

ans =

 Columns 1 through 7:

   0.047619   0.047619   0.047619   0.047619   0.047619   0.047619 
0.047619

 Columns 8 through 11:

   0.047619   0.047619   0.047619   0.047619

> J.