Hi all,
Is anyone learned Coursera course named “R Programming” of Johns Hopkins Roger
D. Peng?
I have one question of how to submit my homework.
Following is the request of the question:
pollutantmean <- function(directory, pollutant, id = 1:332) {
## 'directory' is a character vector of length 1 indicating
## the location of the CSV files
## 'pollutant' is a character vector of length 1 indicating
## the name of the pollutant for which we will calculate the
## mean; either "sulfate" or "nitrate".
## 'id' is an integer vector indicating the monitor ID numbers
## to be used
## Return the mean of the pollutant across all monitors list
## in the 'id' vector (ignoring NA values)
## NOTE: Do not round the result!
}
I have successfully come out the correct results. However, I do not know how to
submit my homework step by step.
I have attached one picture in this email, is anyone can help me out?
Thank you so much!
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