Element Label

JXG.CoordsElement,JXG.GeometryElement
↳ JXG.Text
↳ Label

Labels are text objects tied to other elements like points, lines and curves. Labels are handled internally by JSXGraph, only. There is NO constructor "board.create('label', ...)".

Defined in: text.js.
Extends JXG.Text.

Element Summary
Constructor Attributes	Constructor Name and Description
	Label

Attributes Summary
Field Attributes	Field Name and Description
	autoPosition Automatic position of label text.
	autoPositionMaxDistance The auto position algorithm tries to put a label to a conflict-free position around it's anchor element.
	autoPositionMinDistance The auto position algorithm tries to put a label to a conflict-free position around it's anchor element.
	offset Label offset from label anchor.
	position Possible string values for the position of a label for label anchor points are: 'first' (lines only) 'last' (lines only) 'lft' 'rt' 'top' 'bot' 'ulft' 'urt' 'llft' 'lrt' This is relevant for non-points: line, circle, curve.

Methods borrowed from class JXG.Text:: _createFctUpdateText, _setText, bounds, checkForSizeUpdate, convertGeonext2CSS, convertGeonextAndSketchometry2CSS, convertSketchometry2CSS, crudeSizeEstimate, escapeTicks, expandShortMath, generateTerm, getAnchorX, getAnchorY, getNumberOfConflicts, getSize, hasPoint, notifyParents, poorMansTeX, replaceSub, replaceSup, setAutoPosition, setCoords, setText, setTextJessieCode, unescapeTicks, update, updateRenderer, updateSize, updateText, utf8_decode, valueTagToJessieCode
Methods borrowed from class JXG.GeometryElement:: _set, addChild, addDescendants, addParents, addParentsFromJCFunctions, addRotation, addTicks, addTransform, animate, clearTrace, cloneToBackground, countChildren, createGradient, createLabel, draggable, formatNumberLocale, fullUpdate, generatePolynomial, getAttribute, getAttributes, getLabelAnchor, getName, getParents, getProperty, getSnapSizes, getTextAnchor, getType, handleSnapToGrid, hide, hideElement, labelColor, noHighlight, normalize, prepareUpdate, remove, removeAllTicks, removeChild, removeDescendants, removeTicks, resolveShortcuts, setArrow, setAttribute, setDash, setDisplayRendNode, setLabel, setLabelText, setName, setParents, setPosition, setPositionDirectly, setProperty, show, showElement, snapToPoints, updateVisibility, useLocale
Methods borrowed from class JXG.CoordsElement:: _anim, addAnchor, addConstraint, Dist, findClosestSnapValue, free, handleAttractors, handleSnapToPoints, makeGlider, moveAlong, moveTo, popSlideObject, setGliderPosition, setPositionByTransform, updateConstraint, updateCoords, updateGlider, updateGliderFromParent, updateTransform, visit, X, XEval, Y, YEval, Z, ZEval

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

Label

Attribute Detail

{Boolean} autoPosition

Automatic position of label text. When called first, the positioning algorithm starts at the position defined by offset. The algorithm tries to find a position with the least number of overlappings with other elements, while retaining the distance to the anchor element.
Defined in: options.js.

	var p1 = board.create('point', [-2, 1], {id: 'A'});
	var p2 = board.create('point', [-0.85, 1], {
     name: 'B', id: 'B', label:{autoPosition: true, offset:[10, 10]}
 });
	var p3 = board.create('point', [-1, 1.2], {
     name: 'C', id: 'C', label:{autoPosition: true, offset:[10, 10]}
 });
 var c = board.create('circle', [p1, p2]);
	var l = board.create('line', [p1, p2]);

See:: Label#offset

Default Value:: false

{Number} autoPositionMaxDistance

The auto position algorithm tries to put a label to a conflict-free position around it's anchor element. For this, the algorithm tests 12 positions around the anchor element up to a distance from the anchor defined here (in pixel).
Defined in: options.js.

See:: Label#autoPosition; Label#autoPositionMinDistance

Default Value:: 28

{Number} autoPositionMinDistance

The auto position algorithm tries to put a label to a conflict-free position around it's anchor element. For this, the algorithm tests 12 positions around the anchor element starting at a distance from the anchor defined here (in pixel).
Defined in: options.js.