Modifier Functions

aria!(ec)

Adds or modifies ARIA (Accessible Rich Internet Applications) settings for an EChart.

Methods

aria!(ec::EChart; show, description, general, series, data)

Arguments

• show::Bool = true : enable ARIA
• description::Union{String, Nothing} = nothing : custom description for screen readers
• general::Union{Dict, Nothing} = nothing : general ARIA configuration dict
• series::Union{Dict, Nothing} = nothing : per-series ARIA configuration dict
• data::Union{Dict, Nothing} = nothing : per-data ARIA configuration dict

Examples

b = bar(["A","B","C"], [1,2,3])
aria!(b)

jitter!(ec)

Adds random jitter to data points in an EChart to reduce overplotting. The jitter amount is a random percentage of the data range, following the range method from Chambers, Cleveland, Kleiner, and Tukey (1983).

Methods

jitter!(ec::EChart, series::Int; pctxrange, pctyrange)
jitter!(ec::EChart; pctxrange, pctyrange)

Arguments

• series::Int : index of the series to jitter (single-series method only)
• pctxrange::Real = 0.05 : maximum jitter as a fraction of the x data range
• pctyrange::Real = 0 : maximum jitter as a fraction of the y data range

Notes

When called without a series argument, jitter is applied to all series.

Examples

s = scatter([1,1,2,2,3], [1,1,2,2,3])
jitter!(s)

labels!(ec)

Shows or hides data labels on an EChart.

Methods

labels!(ec::EChart, series::Int; show, position)
labels!(ec::EChart; show, position)

Arguments

• series::Int : index of the series to modify (single-series method only)
• show::Bool = true : display labels
• position::String = "insideTop" : label position (e.g. "insideTop", "top", "inside", "bottom")

Notes

When called without a series argument, labels are applied to all series.

Examples

b = bar(["A","B","C"], [1,2,3])
labels!(b)

lineargradient(color1, color2)

Creates a linear gradient JSFunction for use with colorscheme! or other color arguments. The gradient transitions from color1 at offset 0 to color2 at offset 1.

Methods

lineargradient(color1::String, color2::String; x0, y0, x2, y2)

Arguments

• color1::String : starting color (CSS color string)
• color2::String : ending color (CSS color string)
• x0::Number = 0 : x coordinate of gradient start (0–1)
• y0::Number = 0 : y coordinate of gradient start (0–1)
• x2::Number = 0 : x coordinate of gradient end (0–1)
• y2::Number = 1 : y coordinate of gradient end (0–1)

Examples

b = bar(["A","B","C"], [1,2,3])
colorscheme!(b, lineargradient("#e96c5b", "#47a0d5"))

radialgradient(color1, color2)

Creates a radial gradient JSFunction for use with colorscheme! or other color arguments. The gradient transitions from color1 at offset 0 to color2 at offset 1.

Methods

radialgradient(color1::String, color2::String; x, y, r)

Arguments

• color1::String : starting color at center (CSS color string)
• color2::String : ending color at edge (CSS color string)
• x::Number = 0.5 : x coordinate of gradient center (0–1)
• y::Number = 0.5 : y coordinate of gradient center (0–1)
• r::Number = 0.5 : radius of gradient (0–1)

Examples

b = bar(["A","B","C"], [1,2,3])
colorscheme!(b, radialgradient("#e96c5b", "#47a0d5"))

slider!(ec)

Adds a data zoom slider to an EChart, allowing the user to pan and zoom along the data axis.

Methods

slider!(ec::EChart)

Examples

b = bar(["A","B","C","D","E"], [1,2,3,4,5])
slider!(b)

theme!(ec, theme)

Sets the theme for an EChart.

Methods

theme!(ec::EChart, theme::Theme)

Arguments

• theme::Theme : a Theme object specifying visual styling

Examples

b = bar(["A","B","C"], [1,2,3])
theme!(b, Theme(backgroundColor = "#1b1b1b"))

tooltip!(ec)

Adds or modifies the tooltip for an EChart.

Methods

tooltip!(ec::EChart; show, kwargs...)

Arguments

• show::Bool = true : display the tooltip
• kwargs : any additional field of the Tooltip struct (e.g. trigger, formatter)

Examples

b = bar(["A","B","C"], [1,2,3])
tooltip!(b, trigger = "axis")

yarea!(ec, startval, endval)

Adds a shaded region along the y-axis to highlight a range of y values on an EChart.

Methods

yarea!(ec::EChart, startval, endval; series, kwargs...)

Arguments

• startval : y-axis value where the shaded region starts
• endval : y-axis value where the shaded region ends
• series::Int = 1 : index of the series to attach the region to
• kwargs : additional ItemStyle fields for the shaded area (e.g. color, opacity)

Examples

b = bar(["A","B","C"], [1,2,3])
yarea!(b, 1.5, 2.5, color = "rgba(200,200,200,0.4)")

xaxis!(ec)

Modifies x-axis properties of an EChart.

Methods

xaxis!(ec::EChart; formatter, kwargs...)

Arguments

• formatter::Union{String, JSFunction, Nothing} = nothing : axis label format string or JS function
• kwargs : any field of the XAxis struct (e.g. name, type, boundaryGap)

Examples

b = bar(["A","B","C"], [1,2,3])
xaxis!(b, name = "Category")

yaxis!(ec)

Modifies y-axis properties of an EChart.

Methods

yaxis!(ec::EChart; formatter, kwargs...)

Arguments

• formatter::Union{String, JSFunction, Nothing} = nothing : axis label format string or JS function
• kwargs : any field of the YAxis struct (e.g. name, min, max, type)

Examples

b = bar(["A","B","C"], [1000, 2000, 3000])
yaxis!(b, name = "Revenue", formatter = "${value}")

ygridlines!(ec)

Configures the y-axis grid lines for an EChart.

Methods

ygridlines!(ec::EChart; show, interval, kwargs...)

Arguments

• show::Bool = true : display grid lines
• interval::Union{Int, String, JSFunction, Nothing} = "auto" : interval between grid lines
• kwargs : additional LineStyle fields (e.g. color, width, type)

Examples

b = bar(["A","B","C"], [1,2,3])
ygridlines!(b, show = false)