JavaScript must be enabled in order for you to use JSXGraph and JSXGraph reference. However, it seems JavaScript is either disabled or not supported by your browser.

Class Index | File Index

Elements
Classes

Element Boxplot

JXG.GeometryElement
   ↳ JXG.Curve
         ↳ Boxplot

Vertical or horizontal boxplot or also called box-and-whisker plot to present numerical data through their quartiles. The direction of the boxplot is controlled by the attribute "dir". Internally, a boxplot is realized with a single JSXGraph curve.

Given a data set, the input array Q for the boxplot can be computed e.g. with the method JXG.Math.Statistics.boxplot.

Defined in: curve.js.
Extends JXG.Curve.

Element Summary
Constructor Attributes Constructor Name and Description
 
Attributes Summary
Field Attributes Field Name and Description
 
dir
Direction of the boxplot: 'vertical' or 'horizontal'
 
Size and face of outliers.
 
Relative width of the maximum and minimum quantile
Methods borrowed from class JXG.Curve:
addTransform, allocatePoints, Ft, generateTerm, getLabelPosition, getTransformationSource, hasPoint, interpolationFunctionFromArray, maxX, minX, moveTo, notifyParents, update, updateCurve, updateDataArray, updateRenderer, updateTransform, X, Y, Z
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, eval, evalVisProp, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, toTopOfLayer, updateVisibility, useLocale
Events borrowed from class JXG.GeometryElement:
attribute, attribute:key, down, drag, keydrag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, pendown, pendrag, penup, touchdown, touchdrag, touchup, up
Element Detail
Boxplot
This element has no direct constructor. To create an instance of this element you have to call JXG.Board#create with type "boxplot".

Possible parent array combinations are:
{Array} quantiles

Array containing five quantiles (e.g. min, first quartile, median, third quartile, maximum) and an optional array with outlier values. The elements of this array can be of type number, function or string. The optional aub-array outlier is an array of numbers or a function returning an array of numbers.


{Number|Function} axis

Axis position of the boxplot


{Number|Function} width

Width of the rectangle part of the boxplot. The width of the first and 3th quartile is relative to this width and can be controlled by the attribute "smallWidth".


See:
JXG.Math.Statistics#boxplot
Examples:
var data = [57, 57, 57, 58, 63, 66, 66, 67, 67, 68, 69, 70, 70, 70, 70, 72, 73, 75, 75, 76, 76, 78, 79, 81];
var Q = JXG.Math.Statistics.boxplot(data);
var b = board.create('boxplot', [Q, 2, 4]);
var Q = [ -1, 2, 3, 3.5, 5 ];

var b = board.create('boxplot', [Q, 2, 4], {strokeWidth: 3});


				
				
// With outliers
var Q = [ -1, 2, 3, 3.5, 5, [-4, -6] ];
var b = board.create('boxplot', [Q, 3, 4], {dir: 'horizontal', width: 2, smallWidth: 0.25, color:'red'});


				
				
var data = [57, 57, 57, 58, 63, 66, 66, 67, 67, 68, 69, 70, 70, 70, 70, 72, 73, 75, 75, 76, 76, 78, 79, 81];
var Q = JXG.Math.Statistics.boxplot(data);
var b = board.create('boxplot', [Q, 0, 3]);


				
				
var mi = board.create('glider', [0, -1, board.defaultAxes.y]);
var ma = board.create('glider', [0, 5, board.defaultAxes.y]);
var Q = [function() { return mi.Y(); }, 2, 3, 3.5, function() { return ma.Y(); }];

var b = board.create('boxplot', [Q, 0, 2]);


				
                
Attribute Detail
{String} dir
Direction of the boxplot: 'vertical' or 'horizontal'
Defined in: options.js.
Default Value:
'vertical'

{Object} outlier
Size and face of outliers. Size is the point size in pixel. Possible values for face are 'o' (default), '[]', '<>', '<<>>', '+', 'x', '-', '|'. See JXG.Grid for these names ('o' here is 'regpol' of the grid).
Defined in: options.js.
Default Value:
{
  size: 3,
  face: 'o'
 }

{Number} smallWidth
Relative width of the maximum and minimum quantile
Defined in: options.js.
Default Value:
0.5

Attributes borrowed from other Elements
Attributes borrowed from class JXG.Curve:
lineCap
Attributes borrowed from class JXG.GeometryElement:
aria, cssClass, dash, dashScale, draft, dragToTopOfLayer, element3D, fillColor, fillOpacity, fixed, frozen, gradient, gradientAngle, gradientCX, gradientCY, gradientEndOffset, gradientFR, gradientFX, gradientFY, gradientR, gradientSecondColor, gradientSecondOpacity, gradientStartOffset, highlight, highlightCssClass, highlightFillColor, highlightFillOpacity, highlightStrokeColor, highlightStrokeOpacity, highlightStrokeWidth, ignoreForLabelAutoposition, isLabel, layer, needsRegularUpdate, nonnegativeOnly, precision, priv, rotatable, scalable, shadow, snapToGrid, strokeColor, strokeOpacity, strokeWidth, tabindex, trace, traceAttributes, transitionDuration, transitionProperties, visible, withLabel

Fields borrowed from other Elements
Fields borrowed from class JXG.Curve:
dataX, dataY, numberPoints, qdt, ticks
Fields borrowed from class JXG.GeometryElement:
_org_type, _pos, ancestors, baseElement, board, childElements, descendants, dump, elementClass, elType, hasLabel, highlighted, id, inherits, isDraggable, isReal, lastDragTime, methodMap, mouseover, name, needsUpdate, notExistingParents, numTraces, parents, quadraticform, rendNode, stdform, subs, symbolic, traces, transformations, type, visProp, visPropCalc

Methods borrowed from other Elements
Methods borrowed from class JXG.Curve:
addTransform, allocatePoints, Ft, generateTerm, getLabelPosition, getTransformationSource, hasPoint, interpolationFunctionFromArray, maxX, minX, moveTo, notifyParents, update, updateCurve, updateDataArray, updateRenderer, updateTransform, X, Y, Z
Methods borrowed from class JXG.GeometryElement:
_set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, animate, bounds, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, eval, evalVisProp, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, toTopOfLayer, updateVisibility, useLocale

Events borrowed from other Elements
Events borrowed from class JXG.GeometryElement:
attribute, attribute:key, down, drag, keydrag, mousedown, mousedrag, mousemove, mouseout, mouseover, mouseup, move, out, over, pendown, pendrag, penup, touchdown, touchdrag, touchup, up
Documentation generated by JsDoc Toolkit 2.4.0 on Wed Mar 04 2026 17:33:53 GMT+0100 (Mitteleuropäische Normalzeit)