ezPrecis: Obtain a structure summary of a given data frame

In ez: Easy Analysis and Visualization of Factorial Experiments

Description

This function provides a structure summary of a given data frame.

Usage

ezPrecis(
    data
    , transpose = TRUE
)

Arguments

data	Data frame containing the data to be analyzed.
transpose	Logical. If TRUE (default), triggers tranposition of the resulting summary data frame (useful when there are many columns in the original data frame, leading the untransposed summary data frame to wrap).

Details

This function was inspired by the whatis() function from the YaleToolkit package.

Value

A data frame containing the descriptive information about each column in the specified data frame:

type	This row indicates the type of data R thinks is in each column. Recall that when R imports data to a data frame, each column is given a label that indicates what type of information is in that column (character, numeric, or a factor data).
missing	This row reports a count of the number of missing values in each column.
unique	This row reports a count of the number of unique values in each column.
min	This row reports the minimum value found in each column. If the column data is numeric this is straightforward. If the column data is factored, the first level is reported. If the column data is character, the alphabetically first string is reported.
max	This row reports the maximum value found in each column. If the column data is numeric this is straightforward. If the column data is factored, the last level is reported. If the column data is character, the alphabetically last string is reported.

Author(s)

Michael A. Lawrence [e-mail]
Visit the ez development site at http://github.com/mike-lawrence/ez
for the bug/issue tracker and the link to the mailing list.

See Also

ezDesign

Examples

#Read in the ANT2 data (see ?ANT2).
data(ANT2)
head(ANT2)

#Show a summary of the ANT2 data.
ezPrecis(ANT2)

Example output

  subnum     group block trial     cue     flank location direction       rt
1      1 Treatment     1     1    None   Neutral       up      left 398.6773
2      1 Treatment     1     2  Center   Neutral       up      left 389.1822
3      1 Treatment     1     3  Double   Neutral       up      left 333.2186
4      1 Treatment     1     4 Spatial   Neutral       up      left 419.7640
5      1 Treatment     1     5    None Congruent       up      left 446.4754
6      1 Treatment     1     6  Center Congruent       up      left 338.9766
  error
1     0
2     0
3     0
4     0
5     0
6     0
Data frame dimensions: 5760 rows, 10 columns
             type missing values      min         max
subnum    numeric       0     20        1          20
group      factor       0      2  Control   Treatment
block     numeric       0      6        1           6
trial      factor       0     48        1          48
cue        factor       0      4     None     Spatial
flank      factor       0      3  Neutral Incongruent
location   factor       0      2     down          up
direction  factor       0      2     left       right
rt        numeric     144   5617 179.5972    657.6986
error     numeric     144      3        0           1

ez documentation built on May 2, 2019, 3:46 a.m.