[R] force values for elements of a dataframe below cut-off

[Luigi Marongiu]

Dear all,
I would like to clip the data of a dataframe by forcing the value of
the elements below a cut-off to 0. I believe that the function to be
used is sapply but I could not have the call working properly.
Would you have any tip?
Best regards
Luigi


>>>
value <- c(5.43, 6.63, 0, 6.2, 5.61, 0, 5.59, 0, 0, 5.49, 18.35, 0,
6.07, 4.54, 4.73, 0, 5.74, 33.02, 4.45, 31.16, 0, 0, 3.12, 0, 0, 4.78,
0, 0, 0, 0, 0, 32.42, 3.35, 3.87, 0, 3.26, 5.75, 1.66, 0, 0, 0, 8.49,
3.08, 0, 0, 3.74, 0, 0, 4.06, 3.8, 0, 0
)
sample <- c("p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.001", "p.001", "p.001", "p.001", "p.001", "p.001", "p.001",
"p.002", "p.002", "p.002", "p.002"
)

df <- as.data.frame(cbind(sample, value))

# cut off
co <- 8.5