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package dataframe
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CSV Reading and Writing
val read :
?columns:(Base.string * Array_intf.packed) Base.list ->
Base.string ->
[ `unfiltered ] Df.t Base.Or_error.tread ?columns filename loads a dataframe from a CSV file. If columns is specified, only the named columns are used in the returned dataframe. If some columns are missing from the CSV file an error is returned.
val read_exn :
?columns:(Base.string * Array_intf.packed) Base.list ->
Base.string ->
[ `unfiltered ] Df.tSimilar to read_exn but raises exception on errors.
val write : _ Df.t -> Base.string -> Base.unit Base.Or_error.twrite df filename writes dataframe df in CSV format.
val write_exn : _ Df.t -> Base.string -> Base.unitSimilar to write_exn but raises exception on errors.
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