io (version 0.3.2)

qread: Data input

Description

This function reads a file in a specified format.

Usage

qread(file, type = NULL, ...)

Arguments

file

file name (character or filenamer::filename), a readable text-mode connection (for some types), or path to existing directory

type

data or file type

...

other arguments passed to the underlying function

Value

a data object (type depends on the underlying function)

Details

If type is NULL, the file type is inferred from the file extension. Use io_supported to check support for a file or data type.

Examples

# NOT RUN {
data(cars)

# write data to an RDS file
qwrite(cars, "cars.rds")
# infer output type based on the class of the cars object
qwrite(cars, "cars.dfm", type=NA)

# read data back in
x1 <- qread("cars.rds")
# specify the type explicitly
x3 <- qread("cars.dfm", type="data.frame")

# read all files (with extension) in current directory
xs <- qread(".", pattern="cars")
# }
# NOT RUN {
# }