Struct vega_lite_3::XClass

pub struct XClass {
    pub aggregate: Option<Aggregate>,
    pub axis: RemovableValue<Axis>,
    pub bin: Option<FluffyBin>,
    pub field: Option<Field>,
    pub impute: Option<ImputeParams>,
    pub scale: RemovableValue<Scale>,
    pub sort: RemovableValue<Sort>,
    pub stack: Option<Stack>,
    pub time_unit: Option<TimeUnit>,
    pub title: RemovableValue<String>,
    pub def_type: Option<StandardType>,
    pub value: Option<XUnion>,
}

X coordinates of the marks, or width of horizontal "bar" and "area" without specified x2 or width.

The value of this channel can be a number or a string "width" for the width of the plot.

Definition object for a constant value of an encoding channel.

Fields

aggregate: Option<Aggregate>

Aggregation function for the field (e.g., mean, sum, median, min, max, count).

Default value: undefined (None)

See also: aggregate documentation.

axis: RemovableValue<Axis>

An object defining properties of axis's gridlines, ticks and labels. If null, the axis for the encoding channel will be removed.

Default value: If undefined, default axis properties are applied.

See also: axis documentation.

bin: Option<FluffyBin>

A flag for binning a quantitative field, an object defining binning parameters, or indicating that the data for x or y channel are binned before they are imported into Vega-Lite ("binned").

• If true, default binning parameters will be applied.

• If "binned", this indicates that the data for the x (or y) channel are already binned. You can map the bin-start field to x (or y) and the bin-end field to x2 (or y2). The scale and axis will be formatted similar to binning in Vega-lite. To adjust the axis ticks based on the bin step, you can also set the axis's tickMinStep property.

Default value: false

See also: bin documentation.

field: Option<Field>

Required. A string defining the name of the field from which to pull a data value or an object defining iterated values from the repeat operator.

See also: field documentation.

Notes:

1. Dots (.) and brackets ([ and ]) can be used to access nested objects (e.g., "field": "foo.bar" and "field": "foo['bar']"). If field names contain dots or brackets but are not nested, you can use \\ to escape dots and brackets (e.g., "a\\.b" and "a\\[0\\]"). See more details about escaping in the field documentation.
2. field is not required if aggregate is count.

impute: Option<ImputeParams>

An object defining the properties of the Impute Operation to be applied. The field value of the other positional channel is taken as key of the Impute Operation. The field of the color channel if specified is used as groupby of the Impute Operation.

See also: impute documentation.

scale: RemovableValue<Scale>

An object defining properties of the channel's scale, which is the function that transforms values in the data domain (numbers, dates, strings, etc) to visual values (pixels, colors, sizes) of the encoding channels.

If null, the scale will be disabled and the data value will be directly encoded.

Default value: If undefined, default scale properties are applied.

See also: scale documentation.

sort: RemovableValue<Sort>

Sort order for the encoded field.

For continuous fields (quantitative or temporal), sort can be either "ascending" or "descending".

For discrete fields, sort can be one of the following:

• "ascending" or "descending" -- for sorting by the values' natural order in Javascript.
• A sort-by-encoding definition for sorting by another encoding channel. (This type of sort definition is not available for row and column channels.)
• A sort field definition for sorting by another field.
• An array specifying the field values in preferred order. In this case, the sort order will obey the values in the array, followed by any unspecified values in their original order. For discrete time field, values in the sort array can be date-time definition objects. In addition, for time units "month" and "day", the values can be the month or day names (case insensitive) or their 3-letter initials (e.g., "Mon", "Tue").
• null indicating no sort.

Default value: "ascending"

Note: null is not supported for row and column.

See also: sort documentation.

stack: Option<Stack>

Type of stacking offset if the field should be stacked. stack is only applicable for x and y channels with continuous domains. For example, stack of y can be used to customize stacking for a vertical bar chart.

stack can be one of the following values:

• "zero" or true: stacking with baseline offset at zero value of the scale (for creating typical stacked bar and area chart).
• "normalize" - stacking with normalized domain (for creating normalized stacked bar and area charts.
  -"center" - stacking with center baseline (for streamgraph).
• null or false - No-stacking. This will produce layered bar and area chart.

Default value: zero for plots with all of the following conditions are true: (1) the mark is bar or area; (2) the stacked measure channel (x or y) has a linear scale; (3) At least one of non-position channels mapped to an unaggregated field that is different from x and y. Otherwise, null by default.

See also: stack documentation.

time_unit: Option<TimeUnit>

Time unit (e.g., year, yearmonth, month, hours) for a temporal field. or a temporal field that gets casted as ordinal.

Default value: undefined (None)

See also: timeUnit documentation.

title: RemovableValue<String>

A title for the field. If null, the title will be removed.

Default value: derived from the field's name and transformation function (aggregate, bin and timeUnit). If the field has an aggregate function, the function is displayed as part of the title (e.g., "Sum of Profit"). If the field is binned or has a time unit applied, the applied function is shown in parentheses (e.g., "Profit (binned)", "Transaction Date (year-month)"). Otherwise, the title is simply the field name.

Notes:

1. You can customize the default field title format by providing the fieldTitle property in the config or fieldTitle function via the compile function's options.

2. If both field definition's title and axis, header, or legend title are defined, axis/header/legend title will be used.

def_type: Option<StandardType>

The encoded field's type of measurement ("quantitative", "temporal", "ordinal", or "nominal"). It can also be a "geojson" type for encoding 'geoshape'.

Note:

• Data values for a temporal field can be either a date-time string (e.g., "2015-03-07 12:32:17", "17:01", "2015-03-16". "2015") or a timestamp number (e.g., 1552199579097).
• Data type describes the semantics of the data rather than the primitive data types (number, string, etc.). The same primitive data type can have different types of measurement. For example, numeric data can represent quantitative, ordinal, or nominal data.
• When using with bin, the type property can be either "quantitative" (for using a linear bin scale) or "ordinal" (for using an ordinal bin scale).
• When using with timeUnit, the type property can be either "temporal" (for using a temporal scale) or "ordinal" (for using an ordinal scale).
• When using with aggregate, the type property refers to the post-aggregation data type. For example, we can calculate count distinct of a categorical field "cat" using {"aggregate": "distinct", "field": "cat", "type": "quantitative"}. The "type" of the aggregate output is "quantitative".
• Secondary channels (e.g., x2, y2, xError, yError) do not have type as they have exactly the same type as their primary channels (e.g., x, y).

See also: type documentation.

value: Option<XUnion>

A constant value in visual domain (e.g., "red" / "#0099ff" for color, values between 0 to 1 for opacity).

Trait Implementations

impl Clone for XClass

fn clone(&self) -> XClass

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for XClass

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

Formats the value using the given formatter.

impl Default for XClass

fn default() -> XClass

Returns the "default value" for a type.

impl<'de> Deserialize<'de> for XClass

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Serialize for XClass

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.