Adaptive Builder for Formatted Strings.
rprintf
rprintf is an adaptive builder for formatted strings. Currently it provides a set of tools for building formatted strings under various replacement rules:
- C-style formatting with
sprintf - Number-based formatting
- Variable-based formatting
The primary goal of this package is to make it easier to produce formatted strings in all popular styles.
Installation
You can install from CRAN with
install.packages("rprintf")
or you can install the latest development version from GitHub with
devtools::install_github("rprintf","renkun-ken")
Examples
The following examples demonstrate how rprintf functions works. You should be familiar with how sprintf works first. See the documentation for more details.
C-style formatting
library(rprintf)
rprintf("Hello, %s", "world")
[1] "Hello, world"
rprintf("%s (%d years old)", "Ken", 24)
[1] "Ken (24 years old)"
rprintf("He is %d but has a height of %.1fcm", 18, 190)
[1] "He is 18 but has a height of 190.0cm"
Number-based formatting
rprintf("Hello, {1}", "world")
[1] "Hello, world"
rprintf("{1} ({2} years old)","Ken",24)
[1] "Ken (24 years old)"
rprintf("He is {1} but has a height of {2:.2f}cm",18,190)
[1] "He is 18 but has a height of 190.00cm"
rprintf("{1}, {2:.1f}, {3:+.2f}, {2}, {1:.0f}",1.56,2.34,3.78)
[1] "1.56, 2.3, +3.78, 2.34, 2"
rprintf("{2},{1}","x","y")
[1] "y,x"
Variable-based formatting
rprintf("Hello, $name", name="world")
[1] "Hello, world"
rprintf("$name ($age years old)",name="Ken",age=24)
[1] "Ken (24 years old)"
rprintf("He is $age but has a height of $height:.2fcm",age=18,height=190)
[1] "He is 18 but has a height of 190.00cm"
rprintf("$a, $b:.1f, $c:+.2f, $b, $a:.0f",a=1.56,b=2.34,c=3.78)
[1] "1.56, 2.3, +3.78, 2.34, 2"
For each type of formatting, a specialized function is also provided. rprintv only handles named variable-based formatting, and rprintn only handles number-based formatting.
License
This package is under MIT License.