class altair.Chart(data=Undefined, encoding=Undefined, mark=Undefined, width=Undefined, height=Undefined, **kwargs)

Create a basic Altair/Vega-Lite chart.

Although it is possible to set all Chart properties as constructor attributes, it is more idiomatic to use methods such as mark_point(), encode(), transform_filter(), properties(), etc. See Altair’s documentation for details and examples:


An object describing the data source

A string describing the mark type (one of “bar”, “circle”, “square”, “tick”,

“line”, * “area”, “point”, “rule”, “geoshape”, and “text”) or a MarkDef object.


A key-value mapping between encoding channels and definition of fields.

autosizeanyOf(AutosizeType, AutoSizeParams)

Sets how the visualization size should be determined. If a string, should be one of “pad”, “fit” or “none”. Object values can additionally specify parameters for content sizing and automatic resizing. “fit” is only supported for single and layered views that don’t use rangeStep. __Default value__: pad


CSS color property to use as the background of visualization.

Default value: none (transparent)


Vega-Lite configuration object. This property can only be defined at the top-level of a specification.


Description of this mark for commenting purpose.


The height of a visualization.


Name of the visualization for later reference.


The default visualization padding, in pixels, from the edge of the visualization canvas to the data rectangle. If a number, specifies padding for all sides. If an object, the value should have the format {“left”: 5, “top”: 5, “right”: 5, “bottom”: 5} to specify padding for each side of the visualization. __Default value__: 5


An object defining properties of geographic projection. Works with “geoshape” marks and “point” or “line” marks that have a channel (one or more of “X”, “X2”, “Y”, “Y2”) with type “latitude”, or “longitude”.


A key-value mapping between selection names and definitions.

titleanyOf(string, TitleParams)

Title for the plot.


An array of data transformations such as filter and new field calculation.


The width of a visualization.

__init__(data=Undefined, encoding=Undefined, mark=Undefined, width=Undefined, height=Undefined, **kwargs)


__init__([data, encoding, mark, width, height])


Add one or more selections to the chart.

configure([arc, area, aria, autosize, axis, ...])

Config schema wrapper

configure_arc([align, angle, aria, ...])

RectConfig schema wrapper

configure_area([align, angle, aria, ...])

AreaConfig schema wrapper

configure_axis([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisBand([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisBottom([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisDiscrete([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisLeft([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisPoint([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisQuantitative([aria, ...])

AxisConfig schema wrapper

configure_axisRight([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisTemporal([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisTop([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisX([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisXBand([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisXDiscrete([aria, ...])

AxisConfig schema wrapper

configure_axisXPoint([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisXQuantitative([aria, ...])

AxisConfig schema wrapper

configure_axisXTemporal([aria, ...])

AxisConfig schema wrapper

configure_axisY([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisYBand([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisYDiscrete([aria, ...])

AxisConfig schema wrapper

configure_axisYPoint([aria, bandPosition, ...])

AxisConfig schema wrapper

configure_axisYQuantitative([aria, ...])

AxisConfig schema wrapper

configure_axisYTemporal([aria, ...])

AxisConfig schema wrapper

configure_bar([align, angle, aria, ...])

BarConfig schema wrapper

configure_boxplot([box, extent, median, ...])

BoxPlotConfig schema wrapper

configure_circle([align, angle, aria, ...])

MarkConfig schema wrapper

configure_concat([columns, spacing])

CompositionConfig schema wrapper

configure_errorband([band, borders, extent, ...])

ErrorBandConfig schema wrapper

configure_errorbar([extent, rule, size, ...])

ErrorBarConfig schema wrapper

configure_facet([columns, spacing])

CompositionConfig schema wrapper

configure_geoshape([align, angle, aria, ...])

MarkConfig schema wrapper

configure_header([format, formatType, ...])

HeaderConfig schema wrapper

configure_headerColumn([format, formatType, ...])

HeaderConfig schema wrapper

configure_headerFacet([format, formatType, ...])

HeaderConfig schema wrapper

configure_headerRow([format, formatType, ...])

HeaderConfig schema wrapper

configure_image([align, angle, aria, ...])

RectConfig schema wrapper

configure_legend([aria, clipHeight, ...])

LegendConfig schema wrapper

configure_line([align, angle, aria, ...])

LineConfig schema wrapper

configure_mark([align, angle, aria, ...])

MarkConfig schema wrapper

configure_point([align, angle, aria, ...])

MarkConfig schema wrapper

configure_projection([center, clipAngle, ...])

ProjectionConfig schema wrapper

configure_range([category, diverging, ...])

RangeConfig schema wrapper

configure_rect([align, angle, aria, ...])

RectConfig schema wrapper

configure_rule([align, angle, aria, ...])

MarkConfig schema wrapper

configure_scale([bandPaddingInner, ...])

ScaleConfig schema wrapper

configure_selection([interval, multi, single])

SelectionConfig schema wrapper

configure_square([align, angle, aria, ...])

MarkConfig schema wrapper

configure_text([align, angle, aria, ...])

MarkConfig schema wrapper

configure_tick([align, angle, aria, ...])

TickConfig schema wrapper

configure_title([align, anchor, angle, ...])

TitleConfig schema wrapper

configure_trail([align, angle, aria, ...])

LineConfig schema wrapper

configure_view([clip, continuousHeight, ...])

ViewConfig schema wrapper

copy([deep, ignore])

Return a copy of the object

display([renderer, theme, actions])

Display chart in Jupyter notebook or JupyterLab

encode([angle, color, column, description, ...])

FacetedEncoding schema wrapper

facet([facet, row, column, data, columns])

Create a facet chart from the current chart.

from_dict(dct[, validate])

Construct class from a dictionary representation

from_json(json_string[, validate])

Instantiate the object from a valid JSON string

interactive([name, bind_x, bind_y])

Make chart axes scales interactive

mark_arc([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'arc'

mark_area([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'area'

mark_bar([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'bar'

mark_boxplot([box, clip, color, extent, ...])

Set the chart's mark to 'boxplot'

mark_circle([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'circle'

mark_errorband([band, borders, clip, color, ...])

Set the chart's mark to 'errorband'

mark_errorbar([clip, color, extent, ...])

Set the chart's mark to 'errorbar'

mark_geoshape([align, angle, aria, ...])

Set the chart's mark to 'geoshape'

mark_image([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'image'

mark_line([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'line'

mark_point([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'point'

mark_rect([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'rect'

mark_rule([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'rule'

mark_square([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'square'

mark_text([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'text'

mark_tick([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'tick'

mark_trail([align, angle, aria, ariaRole, ...])

Set the chart's mark to 'trail'

project([type, center, clipAngle, ...])

Add a geographic projection to the chart.


Set top-level properties of the Chart.

repeat([repeat, row, column, layer, columns])

Return a RepeatChart built from the chart

resolve_axis([x, y])

AxisResolveMap schema wrapper

resolve_legend([angle, color, fill, ...])

LegendResolveMap schema wrapper


Resolve references in the context of this object's schema or root schema.

resolve_scale([angle, color, fill, ...])

ScaleResolveMap schema wrapper

save(fp[, format, ...])

Save a chart to file in a variety of formats

serve([ip, port, n_retries, files, ...])

Open a browser window and display a rendering of the chart

show([embed_opt, open_browser])

Show the chart in an external browser window.

to_dict(*args, **kwargs)

Convert the chart to a dictionary suitable for JSON export.

to_html([base_url, output_div, ...])

to_json([validate, ignore, context, indent, ...])

Emit the JSON representation for this object as a string.

transform_aggregate([aggregate, groupby])

Add an AggregateTransform to the schema.

transform_bin([as_, field, bin])

Add a BinTransform to the schema.

transform_calculate([as_, calculate])

Add a CalculateTransform to the schema.

transform_density(density[, as_, bandwidth, ...])

Add a DensityTransform to the spec.

transform_filter(filter, **kwargs)

Add a FilterTransform to the schema.

transform_flatten(flatten[, as_])

Add a FlattenTransform to the schema.

transform_fold(fold[, as_])

Add a FoldTransform to the spec.

transform_impute(impute, key[, frame, ...])

Add an ImputeTransform to the schema.

transform_joinaggregate([joinaggregate, groupby])

Add a JoinAggregateTransform to the schema.

transform_loess(on, loess[, as_, bandwidth, ...])

Add a LoessTransform to the spec.

transform_lookup([lookup, from_, as_, default])

Add a DataLookupTransform or SelectionLookupTransform to the chart

transform_pivot(pivot, value[, groupby, ...])

Add a pivot transform to the chart.

transform_quantile(quantile[, as_, groupby, ...])

Add a quantile transform to the chart

transform_regression(on, regression[, as_, ...])

Add a RegressionTransform to the chart.


Add a SampleTransform to the schema.

transform_stack(as_, stack, groupby[, ...])

Add a StackTransform to the schema.

transform_timeunit([as_, field, timeUnit])

Add a TimeUnitTransform to the schema.

transform_window([window, frame, groupby, ...])

Add a WindowTransform to the schema

validate(instance[, schema])

Validate the instance against the class schema in the context of the rootschema.

validate_property(name, value[, schema])

Validate a property against property schema in the context of the rootschema