General format for regular and irregular data. One long matrix with curve-ID in first column, curve evaluations in
second and time points in third column.
"Format2":
Format for regular data only. Matrix of dimension nr_time x nr_curves.
"Format3":
Format for regular and irregular datasets. List of three
matrices, all with same dimension.
One evaluation matrix Yin where curves are stored
in rows. One matrix of time points Tin. One incidence matrix isobs with entry 1, if curve has evaluation at this time point.
Usage
## S4 method for signature 'list,character'
formatFuncy(data, format="Format1", regTime=NULL)
## S4 method for signature 'matrix,character'
formatFuncy(data, format="Format1", regTime=NULL)
Arguments
data
Data in format "Format1", "Format2" or "Format3".
format
Format to transform data to. One of "Format1" or "Format3". "Format2" is possible only if dataset in data is regular.
regTime
Optional vector of time points if original data is in "Format2".
Details
Data, especially for irregular time points is often stored in different
ways. To switch back and forth between data formats, formatFuncy can
be used. For regular datasets in format "Format2", an optional
vector of evaluation time points can be given as
regTime.
Value
Numeric matrix if format="Format1" or
format="Format2". If format="Format3", a
list of the three matrices Yin, Tin, isobs and
two vectors N and t_all. N stores the number of
time points for each curve and t_all is a vector of unique
time points (see Arguments).
Author(s)
Christina Yassouridis
Examples
##Generate regular dataset
set.seed(2005)
ds <- sampleFuncy(obsNr=100, k=6, timeNr=20, reg=TRUE)
Data(ds)
##Format dataset to Format1
newdat <-formatFuncy(data=Data(ds), format="Format1")
newdat
##Back to matrix out of Format1
formatFuncy(newdat, format="Format2")
##To Format3
formatFuncy(newdat, format="Format3")
##Generate irregular dataset
set.seed(2005)
ds <- sampleFuncy(obsNr=100, k=5, timeNrMin=5, timeNrMax=10, reg=FALSE)
res <- formatFuncy(Data(ds), format="Format3", reg=FALSE)
res
##Back to Format1
formatFuncy(data=res, format="Format1", reg=FALSE)