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I am making my first attempts to write a R package. I am loading one csv file from hard drive and I am hoping to bundle up my R codes and my csv files into one package later.
My question is how can I load my csv file when my pakage is generated, I mean right now my file address is something like c:\R\mydirectory....\myfile.csv but after I sent it to someone else how can I have a relative address to that file?
Feel free to correct this question if it is not clear to others!
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You can think of R as having a file explorer window open invisibly in the background. You can see the folder that's open at the moment by typing getwd() at the console. setwd() tells R to open a different folder instead. setwd('../') tells R to go up to a parent directory.
To do this two steps needed: Create the file named Renviron (without dot) in the folder \Program\etc\ (Program is the directory where R is installed--for example, for me it was C:\Program Files\R\R-4.0. 0\etc) Insert a line in Renviron with new path: R_LIBS_USER = "C:/R/Library"
You can put your csv files in the data directory or in inst/extdata.
See the Writing R Extensions manual - Section 1.1.5 Data in packages.
To import the data you can use, e.g.,
R> data("achieve", package="flexclust")
or
R> read.table(system.file("data/achieve.txt", package = "flexclust"))
Look at the R help for package.skeleton: this function
automates some of the setup for a new source package. It creates directories, saves functions, data, and R code files to appropriate places, and creates skeleton help files and a ‘Read-and-delete-me’ file describing further steps in packaging.
The directory structure created by package.skeleton includes a data directory. If you put your data here it will be distributed with the package.
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