Providing just one primary function, 'readit' uses a set of reasonable
heuristics to apply the appropriate reader function to the given file path.
As long as the data file has an extension, and the data is (or can be
coerced to be) rectangular, readit() can probably read it.
c(person("Ryan", "Price", email = "ryapric@gmail.com", role = c("aut", "cre")))

You can use the function Read.mnist() to read data and arrange them properly from MNIST dataset (the open handwriting digit database <http://yann.lecun.com/exdb/mnist/>). With this package, you can conveniently get all of necessary informations and then immediately start to check whether your machine learning algorithm works well. It can automatically recognize the type of dataset and returns the informations in corresponding structure.

Utilities for Importing and Manipulating Biomedical Data Files
Tools to read various file types into one list of data structures, usually, but not limited to, data frames.
Excel files are read sheet-wise, i.e., all or a selection of sheets can be read. Field delimiters and decimal
separators are determined automatically.

Fast Reader for 'Wavefront' OBJ 3D Scene Files
c(
person("Gregory", "Jefferis", email = "jefferis@gmail.com",
role = c("aut", "cph", "cre")),
person("Syoyo", "Fujita", role=c("aut", "cph"),
comment="tiny_obj_loader.* are copyright Syoyo Fujita")
)
Wraps 'tiny_obj_loader' C++ library for reading the 'Wavefront' OBJ
3D file format including both mesh objects and materials files. The
resultant R objects are either structured to match the 'tiny_obj_loader'
internal data representation or in a form directly compatible with the 'rgl'
package.
Gregory Jefferis [aut, cph, cre],
Syoyo Fujita [aut, cph] (tiny_obj_loader.* are copyright Syoyo Fujita)

c(
person("Gregory", "Jefferis", email = "jefferis@gmail.com",
role = c("aut", "cph", "cre"), comment = c(ORCID = "0000-0002-0587-9355")),
person("Syoyo", "Fujita", role=c("aut", "cph"),
comment="tiny_obj_loader.* are copyright Syoyo Fujita")
)
Gregory Jefferis [aut, cph, cre]
(<https://orcid.org/0000-0002-0587-9355>),
Syoyo Fujita [aut, cph] (tiny_obj_loader.* are copyright Syoyo Fujita)