CODEWITHSUNDEEP
r
user_flow
user_flow

Reputation: 189

creating a column by multiplying an element with cumulative product of previous elemnts

I have a vector

df<- c(1000,1.02,1.03,1.04,1.01)

I want to create a new vector which contains cumulative products of the elements in 'df' (the old vector). The new column should look like

b<- c(1020,1050.6,1092.64,1103.5)

basically the first element of new vector is product of first two elements of old vectors. The second vector of the new element is product of first three elements of old vector and so on. I want to avoid loops.

Upvotes: 2

Views: 100

Answers (1)

akrun
akrun

Reputation: 887203

We can use cumprod

cumprod(df)[-1]
#[1] 1020.000 1050.600 1092.624 1103.550

Upvotes: 1

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