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In this chapter, we will discuss Bokeh – Styling Visual Attributes. The default appearance of a Bokeh plot can be customized by setting various properties to the desired value. These properties are mainly of three types −

Properties in Bokeh Styling Visual Attributes

Line properties

The following table lists various properties related to line glyph.

1	line_color	color is used to stroke lines with
2	line_width	This is used in units of pixels as line stroke width
3	line_alpha	Between 0 (transparent) and 1 (opaque) this acts as a floating point
4	line_join	how to join together the path segments. Defined values are: ‘miter’ (miter_join), ’round’ (round_join), ‘bevel’ (bevel_join)
5	line_cap	how to terminate the path segments. Defined values are: ‘butt’ (butt_cap), ’round’ (round_cap), ‘square’ (square_cap)
6	line_dash	BThis is used for a line style. Defined values are: ‘solid’, ‘dashed’, ‘dotted’, ‘dotdash’, ‘dashdot’
7	line_dash_offset	The distance into the line_dash in pixels that the pattern should start from

Fill properties

Various fill properties are listed below −

1	fill_color	This is used to fill paths with
2	fill_alpha	Between 0 (transparent) and 1 (opaque), this acts as a floating-point

Text properties

There are many text related properties as listed in the following table −

1	text_font	font name, e.g., ‘times’, ‘helvetica’
2	text_font_size	font size in px, em, or pt, e.g., ’12pt’, ‘1.5em’
3	text_font_style	font style to use ‘normal’ ‘italic’ ‘bold’
4	text_color	This is used to render text with
5	text_alpha	Between 0 (transparent) and 1 (opaque), this is a floating point
6	text_align	horizontal anchor point for text – ‘left’, ‘right’, ‘center’
7	text_baseline	vertical anchor point for text ‘top’, ‘middle’, ‘bottom’, ‘alphabetic’, ‘hanging’

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