Replace -inf, NaN and NA values with zero in a dataset in R

Question

I am trying to run some trading strategies in R. I have downloaded some stock prices and calculated returns. The new return dataset has a number of -inf, NaN, and NA values.

Answer 1

As per ?zoo:

Subscripting by a zoo object whose data contains logical values is undefined.

So you need to wrap the subsetting in a which call:

log_ret[which(!is.finite(log_ret))] <- 0
log_ret
               x      y z s     p t
2005-01-01 0.234 -0.012 0 0 0.454 0