Data Types
Return the type of the expression EXPR, as a string.
Return the class of the expression EXPR, as a string or create a class
object from the structure S with name ID.
Return true if X is a value from the class CLASS.
Convert VAL to data type TYPE.
Convert from one datatype to another without changing the underlying
data.
Swaps the byte order on values, converting from little endian to big
endian and visa-versa.
Return a matrix or N-dimensional array whose elements are all equal to
the special constant used to designate missing values.
Return 1 for elements of X that are NA (missing) values and zero
otherwise.
Returns the number of dimensions of array A.
Return the number of columns of A.
Return the number of rows of A.
Returns the number of elements in the object A.
Return the `length' of the object A.
Return the number rows and columns of A.
Return 1 if A is an empty matrix (either the number of rows, or the
number of columns, or both are zero).
Return the size of VAL in bytes
Return true if the dimensions of all arguments agree.
Remove singleton dimensions from X and return the result.