Themes

Many parameters controlling the appearance of plots can be overridden by passing a Theme object to the plot function.

The constructor for Theme takes zero or more named arguments each of which overrides the default theme's value.

Parameters

• default_color: When the color aesthetic is not bound, geometry uses this color for drawing. (Color)

• default_point_size: Size of points in the point and boxplot geometry. (Measure)

• line_width: Width of lines in the line geometry. (Measure)

• panel_fill: Background color used in the main plot panel. ( Color or Nothing)

• panel_opacity: Opacity of the plot background panel. (Float in [0.0, 1.0])

• panel_stroke: Border color of the main plot panel. (Color or Nothing)

• background_color: Background color for the entire plot. If nothing, no background. (Color or Nothing)

• plot_padding: How much padding should be put around the plot as a whole (Measure)

• grid_color: Color of grid lines. (Color or Nothing)

• grid_color_focused: In the D3 backend, mousing over the plot makes the grid lines emphasised by transitioning to this color. (Color or Nothing)

• grid_line_width: Width of grid lines. (Measure)

• minor_label_font: Font used for minor labels such as guide entries and labels. (String)

• minor_label_font_size: Font size used for minor labels. (Measure)

• minor_label_color: Color used for minor labels. (Color)

• major_label_font: Font used for major labels such as guide titles and axis labels. (String)

• major_label_font_size: Font size used for major labels. (Measure)

• major_label_color: Color used for major labels. (Color)

• key_position: Where key should be placed relative to the plot panel. One of :left, :right, :top, :bottom, or :none. Setting to :none disables the key. (Symbol)

• key_title_font: Font used for titles of keys. (String)

• key_title_font_size: Font size used for key titles. (Measure)

• key_title_color: Color used for key titles. (Color)

• key_label_font: Font used for key entry labels. (String)

• key_label_font_size: Font size used for key entry labels. (Measure)

• key_label_color: Color used for key entry labels. (Color)

• key_max_columns: Maximum number of columns for key entry labels. (Int)

• bar_spacing: Spacing between bars in Geom.bar. (Measure)

• boxplot_spacing: Spacing between boxplots in Geom.boxplot. (Measure)

• errorbar_cap_length: Length of caps on error bars. (Measure)

• highlight_width: Width of lines drawn around plot geometry like points, and boxplot rectangles. (Measure)

• highlight_color: Color used to outline plot geometry. This is a function that alters (e.g. darkens) the fill color of the geometry. (Function)

• lowlight_color: Color used to draw background geometry, such as Geom.ribbon. This is a function that alters the fill color of the geometry. (Function)

• lowlight_opacity: Opacity of background geometry such as Geom.ribbon. (Float64)

• middle_color: Color altering function used to draw the midline in boxplots. (Function)

• middle_width: Width of the middle line in boxplots. (Measure)

• guide_title_position: One of :left, :center, :right indicating the placement of the title of color key guides. (Symbol)

• colorkey_swatch_shape: The shape used in color swatches in the color key guide. Either :circle or :square (Symbol)

• bar_highlight: Color used to stroke bars in bar plots. If a function is given, it's used to transform the fill color of the bars to obtain a stroke color. (Function, Color, or Nothing)

Examples

plot(x=rand(10), y=rand(10),
     Theme(panel_fill=colorant"black", default_color=colorant"orange"))

Setting the font to Computer Modern to create a LaTeX-like look, and choosing a font size:

plot(x=rand(10), y=rand(10),
     Theme(major_label_font="CMU Serif",minor_label_font="CMU Serif",major_label_font_size=16pt,minor_label_font_size=14pt))