getfame and putfame read and write scalars (ti,
numeric, character or logical objects of length 1) and
numeric tis (Time Indexed Series) from and to Fame databases.
FAME case series and series with string or FAME "date" types can be
read by getfame, but not written with putfame.
fameWhats returns information about an object in a database,
including its name, class, type, basis and observed attributes, as
well as start (a ti Time Index) and length. If getDoc is
TRUE, it will also include description and
documentation components.
fameWhats is a wrapper around the function fameWhat,
which provides the same information in a lower-level form.
fameWildlist returns a list giving the name, class, type and
frequency of the objects in the database with names that match
wildString.
getfame(sernames, db, connection = NULL, save = FALSE, envir = parent.frame(),
start = NULL, end = NULL, getDoc = TRUE)
putfame(serlist, db, access = "shared", update = TRUE,
checkBasisAndObserved = FALSE, envir = parent.frame())
fameWhats(db, fname, connection = NULL, getDoc = TRUE)
fameWildlist(db, wildString = "?", connection = NULL, nMax = 1000, charMode = TRUE)character vector of Fame names of series and/or scalars to retrieve.
string giving the relative or full path to the Fame database to read
or write from. If the fameLocalPath() function is defined, it
will be called on this argument to obtain a path. To open a remote
database, use a string like "servername /path/to/a/database.db".
created by calling fameConnection. Leave this at the
default NULL setting for local databases.
if TRUE the retrieved series are individually saved in the
environment specified by envir.
for getfame, the environment used by assign to save
the retrieved series if save is TRUE. For
putfame, if serlist is a character vector, the
environment in which to find the series that will be stored in the
database. The default environment for both functions is the frame
of the caller.
a ti object, or something that the ti function
can turn into a ti object. The time index for the first
observation in the returned series. The default is the series start
in the database.
a ti object, or something that the ti function
can turn into a ti object. The time index for the last
observation in the returned series. The default is the series end
in the database.
if TRUE (the default), also get the series description and
documentation attributes, accessible via functions of the
same names.
the objects to be written to the database. This can be a character
vector giving the names of the objects in the environment specified
by envir, a list containing the objects, or an object itself.
Objects that can be written to the database include scalars (single
numbers, strings, and ti dates), and tis series.
string specifying the access mode to open the database in. Should
be one of c("create", "overwrite", "read", "shared",
"update"). Warning: Opening an existing database in
"overwrite" mode wipes out the database. You almost never want to
do this.
if TRUE (the default), existing series in the database will
be updated. If FALSE, existing series in the database with
the same names will be replaced by the series in serlist.
Fame scalars (single strings, numbers or ti dates) always
overwrite their previous incarnations.
if TRUE and update == TRUE, the basis and
observed attributes of any existing series with the same name will
be checked for consistency with the updating series from
serlist. If the basis or observed attributes differ, the
update will not happen. This argument has no effect with respect to
non-series objects.
name of an object in a FAME database
string containing FAME wildcards
maximum number of matches to return
if TRUE (the default) return class,
type and freq components as strings, rather than
integer codes.
getfame returns a list of the retrieved objects. If save
is T, the list is returned invisibly. The names of the list
are the R names described in the details. Fame scalars are returned
as strings, ti dates, or numbers. Case series are returned as
vectors of the appropriate type, with the names attribute of each
vector set to the case numbers. If getDoc
is TRUE (the default), retrieved objects will also have
attributes named description and documentation.
putfame invisibly returns an empty string.
fameWhats returns NULL if it can't find fname in
db. Otherwise, it return a list with components
name of the object in the database
'series', 'scalar', or 'formula'
'undefined', 'numeric', 'namelist', 'boolean', 'string', 'precision', or 'date'
tifName for the date's frequency
'undefined', 'daily' or 'business'
'undefined', 'beginning', 'ending', 'averaged', 'summed', 'annualized', 'formula', 'high', or 'low'
number of observations in the series
a ti (TimeIndex) start date for the series
Fame names vs. R names:
The R names of series may differ from their Fame names. For
getfame, names(sernames) holds the R names of the
retrieved series. If sernames does not have a names
attributes, the R names will be the same as the Fame names.
Naming for putfame is more complicated, because the series
specified by serlist for putfame may be univariate or
multivariate. For a multivariate series, the column names of the matrix
become the Fame names. Not having a name for each column is thus an
error.
A univariate series may be a single-column matrix. If it is, and it
has a column name, that becomes the Fame name of the series.
Otherwise, the Fame name of a univariate series is the corresponding
element of names(serlist). If serlist is an actual list
of series, names(serlist) must be of the same length. For
character vector serlist a names attribute is optional. If
there isn't one, the Fame names will be the same as the R names.
Consistency checking when update == TRUE:
If there is already an existing series in the database with the same
name as one in serlist, the Fame class, type, and frequency
are checked for consistency between the updating series and the
existing series in the database. In addition, if
checkBasisAndObserved is TRUE, those attributes are also
checked. Inconsistencies for any of the checked attributes between
the updating existing series will abort the update. The default value
for checkBasisAndObserved is set to FALSE because this
inconsistency is very common in MRA code.
# NOT RUN {
mydb <- "pathToMyDatabase"
boink <- getfame("gdp.q", db = mydb) ## returns a list
gpd.q <- boink[[1]] ## or boink$gdp.q
getfame("gdp.q", db = mydb, save = TRUE) ## saves gdp.q in the current frame
## saves the series as "nominalIncome"
getfame(c(nominalIncome = "gdp.q"), db = mydb, save = TRUE)
seriesA <- tis(1:24, start = c(2002, 1), freq = 12)
seriesB <- tis(1:104, start = c(2002, 1), tif = "wmonday")
documentation(seriesB) <- paste("Line", 1:4, "of seriesB documentation")
## store them as "mser" and "wser"
putfame(c(mser = "seriesA", wser = "seriesB"), db = "myfame.db")
matrixSeries <- cbind(a = seriesA, b = seriesA + 3)
putfame(matrixSeries, db = "myfame.db") ## stores as "a" and "b" in Fame
## storing a scalar as "myscalar"
putfame(c(myscalar = 42), db = "myfame.db")
fameWildlist("myfame.db")
fameWhats("myfame.db", fname = "wser", getDoc = TRUE)
# }
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