Struct FrequencyFn 

pub struct FrequencyFn;

Returns a vertical frequency distribution for numeric data across bin cutoffs.

FREQUENCY counts values into <= first bin, intermediate right-closed bins, and an overflow bucket above the final bin.

Remarks

• Returns an array with bins + 1 rows.
• Bins are sorted before counting.
• If bins_array has no numeric values, result is a single count of all data points.
• Non-numeric values in input ranges are ignored by statistical-collection rules.

Examples

title: "Frequency buckets with two bins"
formula: "=FREQUENCY({1,2,3,4,5},{2,4})"
expected:
  - [2]
  - [2]
  - [1]

title: "Frequency with repeated values"
formula: "=FREQUENCY({1,1,2,2,3},{1,2})"
expected:
  - [2]
  - [2]
  - [1]

Trait Implementations

impl Debug for FrequencyFn

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Function for FrequencyFn

[formualizer-docgen:schema:start] Name: FREQUENCY Type: FrequencyFn Min args: 2 Max args: 1 Variadic: false Signature: FREQUENCY(arg1: number@range) Arg schema: arg1{kinds=number,required=true,shape=range,by_ref=false,coercion=NumberLenientText,max=None,repeating=None,default=false} Caps: PURE, NUMERIC_ONLY [formualizer-docgen:schema:end]

fn caps(&self) -> FnCaps

Capability flags for this function

fn name(&self) -> &'static str

fn min_args(&self) -> usize

fn variadic(&self) -> bool

fn arg_schema(&self) -> &'static [ArgSchema]

fn eval<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], _ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

The unified evaluation path.

fn namespace(&self) -> &'static str

fn volatile(&self) -> bool

fn aliases(&self) -> &'static [&'static str]

Optional list of additional alias names (case-insensitive) that should resolve to this function. Default: empty slice. Implementors can override to expose legacy names. Returned slice must have ’static lifetime (typically a static array reference).

fn function_salt(&self) -> u64

fn eval_reference<'a, 'b, 'c>( &self, _args: &'c [ArgumentHandle<'a, 'b>], _ctx: &dyn FunctionContext<'b>, ) -> Option<Result<ReferenceType, ExcelError>>

Optional reference result path. Only called by the interpreter/engine when the callsite expects a reference (e.g., range combinators, by-ref argument positions, or spill sources).

fn dispatch<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

Dispatch to the unified evaluation path with automatic argument validation.