将数组从php通过命令行传递给R

Question

I have a problem, e am executing a R script from php via command line, and i need to give it two arrays for calculation.

I call the script by running:

Rscript nls.R ??? ???

??? and ??? are my arrays that i need to "give" to R, in order for it to calculate certain values.

Anyone knows how to do this? It is not limited to php, because it is command line - i just need to know if an array can be passed to R via command line and how.

How would R catch it, with what command?

Thanks a lot.

Regards

Answer 1

The command you are looking for is commandArgs() .

Now, if you have for example a list if integers separated by commas in a string, you can get the integers

s = '1,2,3,4,5'
your_list = lapply(strsplit(s, ','), as.numeric)[[1]]

There might be more straight-forward ways achieving this.

EDIT:

better example (should also work with Rscript)

$ R "1,2,3,4,5"
...

>lapply(strsplit(commandArgs()[[2]], ','), as.numeric)[[1]]
[1] 1 2 3 4 5