[R] need help calculating the indicator function

[David Winsemius]

Perhaps (in R):


n_i <- cumsum( Y==l )


You should read further regarding R's logical class, and operators that 
work on it, and how it is coerced.

-- 

David

On 1/29/21 6:27 AM, Ablaye Ngalaba wrote:
> Hello,
> please, I need to calculate the indicator function as I underlined in my
> attached pdf file but I can't define a code in programming language that
> deals with this case. Please help me with a code whether it's in python or
> R can help me.
>
>
>
>     Sincerely.
>
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