Read a DataFrame from its on-disk representation.
This is usually not directly called by users, but is instead called by dispatch in readObject.
readDataFrame(path, metadata, ...)String containing a path to the directory, itself created with saveObject method for DataFrames.
Named list containing metadata for the object, see readObjectFile for details.
Further arguments, passed to altLoadObject for complex nested columns.
The DataFrame represented by path.
"saveObject,DataFrame-method", for the staging method.
library(S4Vectors)
df <- DataFrame(A=1:10, B=LETTERS[1:10])
tmp <- tempfile()
saveObject(df, tmp)
readObject(tmp)
#> DataFrame with 10 rows and 2 columns
#> A B
#> <integer> <character>
#> 1 1 A
#> 2 2 B
#> 3 3 C
#> 4 4 D
#> 5 5 E
#> 6 6 F
#> 7 7 G
#> 8 8 H
#> 9 9 I
#> 10 10 J