dlookr (version 0.5.0)

overview: Describe overview of data

Description

Inquire basic information to understand the data in general.

Usage

overview(.data)

Arguments

.data

a data.frame or a tbl_df.

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

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.

See Also

summary.overview, plot.overview.

Examples

# NOT RUN {
ov <- overview(jobchange)
ov

summary(ov)

# plot(ov)
# }
# NOT RUN {
# }