Set to null to remove stroke.Ī string or array of strings indicating the name of custom styles to apply to the mark. This property has higher precedence than lor. For text, this represents the font size, in pixels.ĭefault value: - 30 for point, circle, square marks width/height’s step - 2 for bar marks with discrete dimensions - 5 for bar marks with continuous dimensions - 11 for text marks.ĭefault stroke color. For bar, this represents the band size of the bar, in pixels. Note that this value sets the area of the symbol the side lengths will increase with the square root of this value. For point/ circle/ square, this represents the pixel area of the marks. The secondary (inner) radius in pixels of arc marks.ĪnyOf(anyOf( SymbolShape, string), ExprRef)ĭefault size for marks. If this property is false, no points would be automatically added to line or area marks.įor arc mark, the primary (outer) radius in pixels.įor text marks, polar coordinate radial offset, in pixels, of the text from the origin determined by the x and y properties. If this value is an empty object ( ) or true, filled points with default properties will be used. In this case, invalid values will be interpreted as zeroes.Ī flag for overlaying line on top of area marks, or an object defining the properties of the overlayed lines. If set to 'filter' (default), all data items with null values will be skipped (for line, trail, and area marks) or filtered (for other marks). innerRadius is an alias for radius2.ĭefines how Vega-Lite should handle marks for invalid values ( null and NaN). Note: This property cannot be used in a style config. Whether the mark’s color should be used as fill color instead of stroke color.ĭefault value: false for all point, line, and rule marks as well as geoshape marks for graticule data sources otherwise, true. If unspecified, the default size is step-2, which provides 2 pixel offset between bars.ĭefault fill color. The default size of the bars with discrete dimensions. For horizontal bars, top-right and bottom-right corner radius.

The default size of the bars on continuous scales.įor vertical bars, top-left and top-right corner radius. The fill and stroke properties have higher precedence than color and will override color. Note: - This property cannot be used in a style config. Whether a mark be clipped to the enclosing group’s width and height. The ideal value for this is either 0 (preferred by statisticians) or 1 (Vega-Lite default, D3 example style). The 'line-top' and 'line-bottom' values operate similarly to 'top' and 'bottom', but are calculated relative to the lineHeight rather than fontSize alone.įor range marks, the vertical alignment of the marks.

One of 'alphabetic' (default), 'top', 'middle', 'bottom', 'line-top', 'line-bottom', or an expression reference that provides one of the valid values. Note: Expression reference is not supported for range marks.ĭefault value: 3/4 of step (width step for horizontal ticks and height step for vertical ticks).įor text marks, the vertical text baseline. The horizontal alignment of the text or ranged marks (area, bar, image, rect, rule). MarkDef to configure the look of the marks.įor example, the following uses mark_circle() with additionalĪrguments to represent points as red semi-transparent filled circles:Īs seen in the last two examples, additional arguments to mark_*() methods are passed along to anĪssociated MarkDef instance, which supports the following attributes: Of the Chart object, which take optional keyword arguments that are passed to In Altair, marks can be most conveniently specified by the mark_* methods In addition, Altair provides the following compound marks: Multi-panel Scatter Plot with Linked BrushingĪ vertical or horizontal line spanning the axis.Ī scatter plot with points represented by text. The mark property is what specifies how exactly those attributesĪltair provides a number of basic mark properties:Ī scatter plot with configurable point shapes. Used to map columns to visual attributes of the plot. We saw in Encodings that the encode() method is

Altair mark text