lemon_print: knitr extension: Always use 'kable' for data frames.

In lemon: Freshing Up your 'ggplot2' Plots

knitr extension: Always use 'kable' for data frames.

Description

Convenience function for working with R Notebooks that ensures data frames (and dplyr tables) are printed with kable while allowing RStudio to render the data frame dynamically for inline display.

Usage

lemon_print(x, options, ...)

## S3 method for class 'data.frame'
lemon_print(x, options, ...)

## S3 method for class 'table'
lemon_print(x, options, ...)

Arguments

x	an data frame or dplyr table object to be printed
options	Current chunk options are passed through this argument.
...	Ignored for now.

Details

These functions divert data frame and summary output to kable for nicely printing the output.

For options to kable, they can be given directly as chunk-options (see arguments to kable), or though as a list to a special chunk-option kable.opts.

For more examples, see vignette('lemon_print', package='lemon').

Knitr usage

To use for a single chunk, do

```{r render=lemon_print,caption='My data frame'}
data.frame
```

Note: We are not calling the function, but instead refering to it.

An alternate route for specifying kable arguments is as:

```{r render=lemon_print,kable.opts=list(align='l')}
data.frame
```

The option kable.opts takes precendence over arguments given directly as chunk-options.

To enable as default printing method for all chunks, include

  knit_print.data.frame <- lemon_print
  knit_print.table <- lemon_print
  knit_print.grouped_df <- lemon_print # enableds dplyr results
  knit_print.tibble <- lemon_print
  knit_print.tbl <- lemon_print

Note: We are not calling the function, but instead assigning the knit_print functions for some classes.

To disable, temporarily, specify chunk option:

```{r render=normal_print}`
data.frame
```

See Also

knit_print, kable

lemon documentation built on April 12, 2025, 9:15 a.m.