Struct vega_lite_4::WindowFieldDefBuilder

pub struct WindowFieldDefBuilder { /* fields omitted */ }

Builder for WindowFieldDef.

Methods

impl WindowFieldDefBuilder

pub fn window_field_def_as<VALUE: Into<String>>(
    &mut self,
    value: VALUE
) -> &mut Self

The output name for the window operation.

pub fn field<VALUE: Into<String>>(&mut self, value: VALUE) -> &mut Self

The data field for which to compute the aggregate or window function. This can be omitted for window functions that do not operate over a field such as "count", "rank", "dense_rank".

pub fn op<VALUE: Into<Op>>(&mut self, value: VALUE) -> &mut Self

The window or aggregation operation to apply within a window (e.g., "rank", "lead", "sum", "average" or "count"). See the list of all supported operations here.

pub fn param<VALUE: Into<f64>>(&mut self, value: VALUE) -> &mut Self

Parameter values for the window functions. Parameter values can be omitted for operations that do not accept a parameter.

See the list of all supported operations and their parameters here.

pub fn build(&self) -> Result<WindowFieldDef, String>

Builds a new WindowFieldDef.

Errors

If a required field has not been initialized.

Trait Implementations

impl Clone for WindowFieldDefBuilder

fn clone(&self) -> WindowFieldDefBuilder

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for WindowFieldDefBuilder

fn default() -> WindowFieldDefBuilder

Returns the "default value" for a type.