Extracts variables from multiple eatGADS
data bases.
Data can then be extracted from the GADSdat
object via
extractData
. For extracting meta data from a data base or a GADSdat
object see extractMeta
. To speed
up the data loading, getGADS_fast
is used per default.
Usage
getTrendGADS(
filePaths,
vSelect = NULL,
years,
fast = TRUE,
tempPath = tempdir(),
verbose = TRUE
)
Arguments
- filePaths
Character vectors with paths to the
eatGADS
db files.- vSelect
Variables from all GADS to be selected (as character vector).
- years
A numeric vector with identical length as
filePaths
.- fast
Should
getGADS_fast
be used for data loading instead ofgetGADS
? Using the default is heavily recommended.- tempPath
The directory, in which both GADS will be temporarily stored. Using the default is heavily recommended.
- verbose
Should the loading process be reported?
Details
This function extracts data from multiple GADS data bases. All data bases have to be created via
createGADS
. The data bases are joined via rbind()
and a variable year
is added, corresponding to the
argument years
. The GADSdat
object can then further
be used via extractData
. See createDB
and dbPull
for further explanation
of the querying and merging processes.