db_bin: Bin formula

In dbplot: Simplifies Plotting Data Inside Databases

Description

Uses the rlang package to build the formula needed to create the bins of a numeric variable in an unevaluated fashion. This way, the formula can be then passed inside a dplyr verb.

Usage

db_bin(var, bins = 30, binwidth = NULL)

Arguments

var	Variable name or formula
bins	Number of bins. Defaults to 30.
binwidth	Single value that sets the side of the bins, it overrides bins

Examples

library(dplyr)

# Important: Always name the field and
# prefix the function with `!!`` (See Details)

# Uses the default 30 bins
mtcars %>%
  group_by(x = !!db_bin(mpg)) %>%
  tally()

# Uses binwidth which overrides bins
mtcars %>%
  group_by(x = !!db_bin(mpg, binwidth = 10)) %>%
  tally()

dbplot documentation built on Feb. 7, 2020, 9:06 a.m.