Rdiff
Compare Printed Output From TERR and R
Description
Compares printed output from TERR or R sessions, ignoring trivial differences.
Usage
Rdiff(from, to, useDiff = FALSE, forEx = FALSE, nullPointers = TRUE,
Log = FALSE)
TERR CMD Rdiff from_file to_file
Arguments
| from |
A text file containing the printed output from a TERR or R session.
|
| to |
Another text file containing the printed output from a TERR or R session.
|
| useDiff |
This argument is ignored.
|
| forEx |
This argument is ignored.
|
| nullPointers |
This argument is ignored.
|
| Log |
This argument is ignored.
|
Details
Rdiff strips the initial banner lines (copyright and so on) from
the files and calls the operating system command diff -bw.
This command prints the differences, but it does not return the text as a character
vector.
Value
- returns the integer 0 if no differences are found between the files
(aside from the banner lines and whitespace).
- returns the integer 1 if differences are found between the files.
- returns a value of 127 or gives a warning if the the operating system command diff cannot be found.
Note
Some R packages have files with the extension ".Rout.save" containing
printed output from running the corresponding ".R" file.
Using Rdiff to compare the saved output file with one from a
current version of R or TERR can be useful.
Rdiff uses the operating system command diff
to make the comparison. It might not be present on Windows, unless you have installed Rtools or Cygwin.