class

Ishi::Base

Inherits Reference / Object

Supported methods.

Instance methods

boxwidth(boxwidth : Float64)

Sets the default width of boxes in the boxes, boxerrorbars, candlesticks and histograms styles.

For information on setting the box width, see: Boxwidth.

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canvas_size(width : Float64, height : Float64)

Sets the size of the terminal canvas.

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canvas_size(width : Int32, height : Int32)

Sets the size of the terminal canvas.

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charts(rows : Int32, cols : Int32)

Changes the number of charts in the figure.

By default a figure has one chart. This call changes the number of charts in the figure. The original chart is preserved and becomes the chart in the first row, first column of the new layout.

Returns the charts.

figure = Ishi.new
charts = figure.charts(2, 2)
charts[0].plot([1, 2, 3, 4])
charts[1].plot([2, 3, 4, 1])
  ...
figure.show

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charts(rows : Int32, cols : Int32, &)

Changes the number of charts in the figure.

By default a figure has one chart. This call changes the number of charts in the figure. The original chart is preserved and becomes the chart in the first row, first column of the new layout.

Yields each chart as the default receiver of the supplied block. Block arguments are i (the i-th chart in the figure), row and col (the row and column of the chart).

figure = Ishi.new
figure.charts(2, 2) do |i|
  plot([1, 2, 3, 4].rotate(i))
    ...
end
figure.show

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imshow(data : Indexable(Indexable(D)), **options) forall D

Displays an image.

data is scalar image data.

Data is visualized using a colormap.

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margin(left : Float64 | Bool = false, right : Float64 | Bool = false, top : Float64 | Bool = false, bottom : Float64 | Bool = false)

Sets the margin.

For information on setting/unsetting the margin, see: Margin.

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margin(left : Int32 | Bool = false, right : Int32 | Bool = false, top : Int32 | Bool = false, bottom : Int32 | Bool = false)

Sets the margin.

For information on setting/unsetting the margin, see: Margin.

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palette(name : Symbol, colorbox : Bool = true)

Sets the palette.

name is :gray or one of the available color palettes: :hot, :inferno, :jet, :magma, :plasma or :viridis

Optionally, shows/hides the chart colorbox based on the value of colorbox.

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plot(xdata : Indexable(T), ydata : Indexable(U), zdata : Indexable(V), format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol = :points, **options) forall T, U, V

Plots x, y and z.

title is the title of the plot. style is the drawing style. Supported styles include :surface, :circles, :lines, :points and :dots.

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plot(ydata : Indexable(Y), format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol = :lines, **options) forall Y

Plots y using x ranging from 0 to N-1.

title is the title of the plot. style is the drawing style. Supported styles include :boxes, :lines, :points, :linespoints and :dots.

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plot(xdata : Indexable(M), ydata : Indexable(N), format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol = :points, **options) forall M, N

Plots x and y.

title is the title of the plot. style is the drawing style. Supported styles include :boxes, :lines, :points, :linespoints and :dots.

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plot(expression : String, format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol | Nil = nil, **options)

Plots a mathematical expression.

plot("sin(x) * cos(x)")
plot("3.5 * x + 1.5")

For information on gnuplot mathematical expressions, see: Expressions.

title is the title of the plot. style is the drawing style. Supported styles include :lines and :points.

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scatter(xdata : Indexable(M), ydata : Indexable(N), format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol = :dots, **options) forall M, N

Scatter plots x and y.

title is the title of the plot.

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scatter(xdata : Indexable(T), ydata : Indexable(U), zdata : Indexable(V), format : String | Nil = nil, *, title : String | Nil = nil, style : Symbol = :dots, **options) forall T, U, V

Scatter plots x, y and z.

title is the title of the plot.

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show

Shows the chart(s).

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show_border(show : Bool)

Shows/hides the chart border.

For information on setting/unsetting the border, see: Border.

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show_colorbox(show : Bool)

Shows/hides the chart colorbox.

For information on setting/unsetting the colorbox, see: Colorbox.

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show_key(show : Bool)

Shows/hides the chart key.

For information on setting/unsetting the key, see: Key.

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show_xtics(show : Bool)

Shows/hides the chart xtics.

For information on setting/unsetting the xtics, see: Xtics.

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show_ytics(show : Bool)

Shows/hides the chart ytics.

For information on setting/unsetting the ytics, see: Ytics.

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size

Returns the number of charts in the figure.

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view(xrot : Float64, zrot : Float64)

Sets the viewing angle for 3D charts.

For information on setting the viewing angle, see: View.

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view(xrot : Int32, zrot : Int32)

Sets the viewing angle for 3D charts.

For information on setting the viewing angle, see: View.

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xlabel(xlabel : String)

Sets the label of the x axis.

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xrange(xrange : Range(Float64, Float64) | Range(Int32, Int32))

Sets the range of the x axis.

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xtics(xtics : Hash(Float64, String))

Sets non-numeric labels on the x-axis.

This translates to set xtics ({"<label>"} <pos> {<level>} {,{"<label>"}...})

see: Xtics list

Example:

plot(x, y).xtics({1.0 => "Jan", 6.0 => "Jun", 12.0 => "Dec"})

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ylabel(ylabel : String)

Sets the label of the y axis.

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yrange(yrange : Range(Float64, Float64) | Range(Int32, Int32))

Sets the range of the y axis.

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zlabel(zlabel : String)

Sets the label of the z axis.

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zrange(zrange : Range(Float64, Float64) | Range(Int32, Int32))

Sets the range of the z axis.

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