Create a frequency histogram for codes

Usage

code_freq_hist(
  x,
  codes = ".*",
  sortByFreq = "decreasing",
  forceRootStripping = FALSE,
  trimSourceIdentifiers = 20,
  ggplot2Theme = ggplot2::theme(legend.position = "bottom"),
  silent = rock::opts$get("silent")
)

Arguments

x: A parsed source(s) object.
codes: A regular expression to select codes to include.
sortByFreq: Whether to sort by frequency decreasingly (decreasing, the default), increasingly (increasing), or alphabetically (NULL).
forceRootStripping: Force the stripping of roots, even if they are different.
trimSourceIdentifiers: If not NULL, the number of character to trim the source identifiers to.
ggplot2Theme: Can be used to specify theme elements for the plot.
silent: Whether to be chatty or silent.

Value

a ggplot2::ggplot().

Examples

### Get path to example source
examplePath <-
  system.file("extdata", package="rock");

### Get a path to one example file
exampleFile <-
  file.path(examplePath, "example-1.rock");

### Load example source
loadedExample <- rock::parse_source(exampleFile);

### Show code frequencies
rock::code_freq_hist(loadedExample);


### - - - - - - - - - - - - - - - - - - - - - - -
### Multiple sources
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### Load example source
loadedExamples <- rock::parse_sources(
  examplePath,
  regex = "example-[1234]"
);
#> Warning: For instance '1' of class 'caseId', attribute 'age' has different values: '60s' & '50s'. Taking the first element: '60s'.
#> Warning: For instance '2' of class 'caseId', attribute 'age' has different values: '20s' & '30s'. Taking the first element: '20s'.
#> Warning: For instance '1' of class 'caseId', attribute 'age' has different values: '60s' & '50s'. Taking the first element: '60s'.
#> Warning: For instance '2' of class 'caseId', attribute 'age' has different values: '20s' & '30s'. Taking the first element: '20s'.
#> Warning: For instance '1' of class 'caseId', attribute 'age' has different values: '60s' & '50s'. Taking the first element: '60s'.
#> Warning: For instance '2' of class 'caseId', attribute 'age' has different values: '20s' & '30s'. Taking the first element: '20s'.

### Show code frequencies
rock::code_freq_hist(loadedExamples);