summarySE: Automatically create summary standard error for plotting...

In IbrahimHE/wrangler: Data Wrangling (by Ibrahim Hassan)

Automatically create summary standard error for plotting error bar in ggplot2

Description

This function creates summary standard error for plotting error bar in ggplot2

Usage

summarySE(
  data = NULL,
  measurevar,
  groupvars = NULL,
  na.rm = TRUE,
  conf.interval = 0.95,
  drop = TRUE
)

Arguments

data	specify dataframe
measurevar	specify measure variables for mean, n, sd, se, ci
groupvars	specify grouping variables
na.rm	TRUE/FALSE whether to remove missing values or not
conf.interval	specify confidence interval
drop	TRUE/FALSE specify whether to drop or not

Value

returns a dataframe with n, mean, sd, ci, se

Examples

## Not run: 
dsummary <- summarySE(iris,
  measurevar = "Petal.Width",
  groupvars = c("Species", "Sepal.Length")
)
dsummary <- summarySE(iris,
  measurevar = "Sepal.Length",
  groupvars = c("Species", "Petal.Width"), F
)
ggplot(dsummary, aes(Sepal.Length, Petal.Width)) +
  geom_point() +
  geom_errorbar(aes(ymin = Petal.Width - se, ymax = Petal.Width + se), width = .03) +
  geom_smooth()

## End(Not run)

IbrahimHE/wrangler documentation built on March 27, 2022, 4:23 p.m.