extractMRFSS: Extraction of Marine Recreational Fisheries Statistics Survey Data from SAS Transport Files
Description
MRFSS intercept and catch/effort data in SAS transport files (.xpt) are extracted using
package foreign and are saved as .csv files under data and year-specific subdirectories.
Usage
extractMRFSS(indir = NULL, outdir = NULL, type = NULL,
state = NULL, styr = NULL, endyr = NULL)
Arguments
indir
the path and directory (in quotes) under which the SAS transport files are stored.
outdir
the path and main directory (in quotes) under which data- and year-specific subdirectories will be created
and .csv files will be stored.
type
the type of data to extract. 1 = raw intercept data, 2= catch/effort estimates.
state
the state code(s) designating which state(s) data to extract. If multiple states, separate state codes with commas within the
concatentation function. If data from all states are desired, do not include the state= argument. State codes a
styr
the starting year of data to extract.
endyr
the ending year of data to extract.
Value
Raw intercept data and catch & effort estimates saved as .csv files.
Details
Download the zipped intercept data and catch/effort estimates from the MRFSS website http://www.st.nmfs.noaa.gov/st1/recreational/index.html. Unzip/extract the
SAS transport files (.xpt) to the indir directory. Using this function, specify the indir and outdir directories, which data type to extract, the state code(s),
and the starting and ending years (from .xpt files) of data to be extracted. If the outdir directory is not specified, the files will be stored under the
indir directory.