Get a glimpse of your data
The tibble S3 generic function tibble::glimpse() is implemented for
prt objects as well. Inspired by the output of str() when applied to
data.frames, this function is intended to display the structure of the
data in terms of columns, irrespective of how the data is organized in terms
of R objects. Similarly to trunc_dt(), the function providing the bulk
of functionality, glimpse_dt(), is exported such that implementing a
class specific tibble::glimpse() function for other classes that
representing tabular data is straightforward.
## S3 method for class 'prt' glimpse(x, width = NULL, ...) glimpse_dt(x, width = NULL) str_sum(x) ## S3 method for class 'prt' str(object, ...) str_dt(x, ...)
x |
An object to glimpse at. |
width |
Width of output: defaults to the setting of the option
|
... |
Unused, for extensibility. |
object |
any R object about which you want to have some information. |
Alongside a prt-specific tibble::glimpse() method, a str() method is
provided as well for prt objects. However, breaking with base R
expectations, it is not the structure of the object in terms of R objects
that is shown, but in the same spirit as tibble::glimpse() it is the
structure of the data that is printed. How this data is represents with
respect to R objects is abstracted away as to show output as would be
expected if the data were represented by a data.frame.
In similar spirit as trunc_dt() and glimpse_dt(), a str_dt() function
is exported which provides the core functionality driving the prt
implementation of str(). This function requires availability of a
head() function for any object that is passed and output can be
customized by implementing an optional str_sum() function.
cars <- as_prt(mtcars) tibble::glimpse(cars) tibble::glimpse(cars, width = 30) str(cars) str(cars, vec.len = 1) str(unclass(cars)) str_sum(cars)
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