focus: Focus in on selected parts of the profile.

In hadley/lineprof: An alternative display for line profiling information

Description

focus allows you to navigate a complicated call stack with a flexible navigation specification. auto_focus is called automatically to zoom into the file that occupies the majority of the current level - this is particularly useful for gctorture.

Usage

focus(x, f = NULL, filename = NULL, ref = NULL)

auto_focus(x)

Arguments

x	a line profile
f	a character vector providing a sequence of calls
filename	base name of the file
ref	a reference of the form "filename.r#lineno"

Examples

## Not run: 
# Line profiling the profile parsing code
(x <- lineprof(parse_prof(find_ex("read-delim.prof"))))

# Zoom into line 38
(x1 <- focus(x, ref = "parse.r#38"))

# Zoom into the lapply
(x2 <- focus(x1, f = c("lapply", "FUN")))
align(x2)

# Zoom into line 21
(x3 <- focus(x2, ref = "parse-ref.r#21"))

## End(Not run)

hadley/lineprof documentation built on May 17, 2019, 10:42 a.m.