Uses an Internet connection to download ECLS_K data. Data come from nces.ed.gov zip files. This function works for 1998 and 2011 data.
Usage
downloadECLS_K(root, years = c(1998, 2011), cache = FALSE, verbose = TRUE)Arguments
- root
a character string indicating the directory where the ECLS_K data should be stored. Files are placed in a subdirectory named ECLS_K/[year].
- years
an integer vector of the assessment years to download. Valid years are 1998 and 2011.
- cache
a logical value set to process and cache the text (.txt) version of files. This takes a very long time but saves time for future uses of the data. Default value is
FALSE.- verbose
a logical value to either print or suppress status message output. The default value is
TRUE.
Details
Beginning for the ECLS_K 2011 Study Grade 5 data files, the ChildK5p.zip source data file is a DEFLATE64 compressed zip file.
This means that the user must manually extract the contained childK5p.dat file using an external zip
program capable of handling DEFLATE64 zip format. As existing R functions are unable to handle this zip format natively.
Examples
if (FALSE) { # \dontrun{
# root argument will vary by operating system conventions
downloadECLS_K(years=c(1998, 2011), root = "~/")
# cache=TRUE will download then process the datafiles
downloadECLS_K(years=c(1998, 2011), root = "~/", cache = TRUE)
# set verbose=FALSE for silent output
# if year not specified, download all years
downloadECLS_K(root="~/", verbose = FALSE)
} # }