peek: peek at the results in a dplyr pipeline

In PKPDmisc: Pharmacokinetic and Pharmacodynamic Data Management Functions

Description

peek at the results in a dplyr pipeline

Usage

peek(df, n = 5, message = NULL)

Arguments

df	dataframe in pipeline
n	number of rows to show
message	give a message along with peeking at the data

Details

A wrapper around giving a head and tail command but only as a side effect so the original data frame is passed along to continue on for furthermanipulation in the pipeline

Examples

library(dplyr)
Theoph %>% select(Subject, Time, conc) %>% peek %>% group_by(Subject) %>% 
summarize(cmax = max(conc)) 

Theoph %>% select(Subject, Time, conc) %>% peek(message = "after select") %>% 
 group_by(Subject) %>% 
summarize(cmax = max(conc)) 

# nice for saving full objects but still seeing their output
cmax_theoph <- Theoph %>% select(Subject, Time, conc) %>% 
peek(message = "after select") %>% 
 group_by(Subject) %>% 
summarize(cmax = max(conc)) %>% peek 
cmax_theoph # still saves full output

PKPDmisc documentation built on April 14, 2020, 5:49 p.m.