https://github.com/andrie/version.compare
R package that allows you to run R code in different versions of R and compare results
https://github.com/andrie/version.compare
Last synced: 26 days ago
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R package that allows you to run R code in different versions of R and compare results
- Host: GitHub
- URL: https://github.com/andrie/version.compare
- Owner: andrie
- License: other
- Created: 2014-11-03T16:53:54.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2021-09-07T12:52:39.000Z (over 3 years ago)
- Last Synced: 2025-02-28T21:58:40.513Z (about 1 month ago)
- Language: R
- Size: 2.2 MB
- Stars: 30
- Watchers: 4
- Forks: 4
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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- jimsghstars - andrie/version.compare - R package that allows you to run R code in different versions of R and compare results (R)
README
# Compare the results of R code running in different installed versions of R
## Objective:
* To compare results (and execution speed) of a script running in different installed versions of R
* This is done by using RScript and diverting output to temp files
## Exported functions
* `findRscript()`
- Finds installed versions of R on a machine, by searching for `Rscript` in typical installation folders
* `version.time()`
- Similar to `system.time()` in base R, takes an expression as input and runs this expression in multiple installations of R on the same machine
- Returns results as well as `system.time()` for each installed version.
## Example
This example runs a simple script in two different installations of R.
```r
# Find installed versions of Rscript
rscript <- findRscript()
# Configure which installed version to use
rscript <- switch(
Sys.info()[["sysname"]],
Windows = c(
"c:/program files/RRO/R-3.1.1/bin/x64/Rscript.exe",
"c:/program files/R/R-3.1.1/bin/x64/Rscript.exe"
),
Linux = c(
"/usr/lib64/RRO-8.0/R-3.1.1/lib/R/bin/Rscript",
"/usr/lib/R/bin/Rscript"
)
)
# Compute vector mean in different R installations
version.time({
foo <- rnorm(1e6)
mean(foo)
} , rscript)
# Compute matrix cross product in different R installations
version.time({
m <- matrix(runif(100), nrow=10)
crossprod(m)
} , rscript)
```
# View the vignette
You can see the package vignette at https://htmlpreview.github.io/?https://github.com/andrie/version.compare/blob/master/inst/doc/version.compare.html