check input data type and format and coerce to the desired output type
This function was created to make the different kinds of data classes at
least seem more fungible. It allows the user to pass in a data
object without being concerned that the function requires a matrix,
data.frame, vector, xts, or timeSeries object. By using checkData,
the function "knows" what data format it has to work with.
checkData(
x,
method = c("xts", "zoo", "data.frame", "matrix", "vector"),
na.rm = TRUE,
quiet = TRUE,
...
)x |
a vector, matrix, data.frame, xts, timeSeries or zoo object to be checked and coerced |
method |
type of coerced data object to return, one of c("xts", "zoo", "data.frame", "matrix", "vector"), default "xts" |
na.rm |
TRUE/FALSE Remove NA's from the data? used only with 'vector' |
quiet |
TRUE/FALSE if false, it will throw warnings when errors are noticed, default TRUE |
... |
any other passthru parameters |
Peter Carl
data(edhec) x = checkData(edhec) class(x) head(x) tail(x) # Note that passing in a single column loses the row and column names x = checkData(edhec[,1]) class(x) head(x) # Include the "drop" attribute to keep row and column names x = checkData(edhec[,1,drop=FALSE]) class(x) head(x) x = checkData(edhec, method = "matrix") class(x) head(x) x = checkData(edhec[,1], method = "vector") class(x) head(x)
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