| overview {dlookr} | R Documentation |
Describe overview of data
Description
Inquire basic information to understand the data in general.
Usage
overview(.data)
Arguments
.data |
a data.frame or a |
Details
overview() creates an overview class. The 'overview' class includes general information such as the size of the data, the degree of missing values, and the data types of variables.
Value
An object of overview class. The overview class contains data.frame and two attributes. data.frame has the following 3 variables.: data.frame is as follow.:
division : division of information.
size : indicators of related to data capacity
duplicated : indicators of related to duplicated value
missing : indicators of related to missing value
data_type : indicators of related to data type
metrics : name of metrics.
observations : number of observations (number of rows)
variables : number of variables (number of columns)
values : number of values (number of cells. rows * columns)
memory size : an estimate of the memory that is being used to store an R object.
duplicate observation: number of duplicate cases(observations).
complete observation : number of complete cases(observations). i.e., have no missing values.
missing observation : number of observations that has missing values.
missing variables : number of variables that has missing values.
missing values : number of values(cells) that has missing values.
numerics : number of variables that is data type is numeric.
integers : number of variables that is data type is integer.
factors : number of variables that is data type is factor.
characters : number of variables that is data type is character.
Dates : number of variables that is data type is Date.
POSIXcts : number of variables that is data type is POSIXct.
others : number of variables that is not above.
value : value of metrics.
Attributes of overview class is as follows.:
duplicated : the index of duplicated observations.
na_col : the data type of predictor to replace missing value.
info_class : data.frame. variable name and class name that describe the data type of variables.
data.frame has a two variables.
variable : variable names
class : data type
See Also
summary.overview, plot.overview.
Examples
ov <- overview(jobchange)
ov
summary(ov)
plot(ov)