Package com.oorian.echarts

Class EChartsHeatmapChart

java.lang.Object
com.oorian.html.Element<EChartsHeatmapChart>
com.oorian.html.VisualElement<EChartsHeatmapChart>
com.oorian.html.StyledElement<EChartsHeatmapChart>
com.oorian.html.StyledContainerElement<EChartsHeatmapChart>
com.oorian.html.elements.Div<EChartsHeatmapChart>
com.oorian.echarts.EChartsChart<EChartsHeatmapChart>
com.oorian.echarts.EChartsHeatmapChart
All Implemented Interfaces:
com.oorian.json.Jsonable
public class EChartsHeatmapChart extends EChartsChart<EChartsHeatmapChart>
A heatmap chart implementation for displaying data intensity as colored cells.

Heatmap charts are useful for visualizing:

  • Correlation matrices
  • Time-based activity patterns (e.g., GitHub contribution graphs)
  • Geographic data density
  • User behavior patterns

Features include:

  • Customizable color gradients
  • Visual map for value-to-color mapping
  • Cell labels
  • EChartsTooltip on hover

Example usage: 


 EChartsHeatmapChart heatmapChart = new EChartsHeatmapChart();
 heatmapChart.setSize(800, 500);

 // Configure axes
 EChartsAxis xAxis = new EChartsAxis();
 xAxis.setType("category");
 xAxis.addData("Mon", "Tue", "Wed", "Thu", "Fri");
 heatmapChart.addXAxis(xAxis);

 EChartsAxis yAxis = new EChartsAxis();
 yAxis.setType("category");
 yAxis.addData("Morning", "Afternoon", "Evening");
 heatmapChart.addYAxis(yAxis);

 // Create heatmap series with [x, y, value] data
 EChartsHeatmapSeries series = heatmapChart.createHeatmapSeries("Activity");
 series.addData(0, 0, 10);  // Monday Morning: 10
 series.addData(0, 1, 25);  // Monday Afternoon: 25
Author:
Oorian
See Also:

  • Field Summary

    Fields inherited from class com.oorian.echarts.EChartsChart

    grid, legend, series, title, toolbox, tooltip, xAxis, yAxis

  • Constructor Summary

    Constructors
    Constructor
    Description
    EChartsHeatmapChart()
    Constructs a new EChartsHeatmapChart.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addHeatmapSeries(EChartsHeatmapSeries heatmapSeries)
    Adds an existing heatmap series to this chart.
    EChartsHeatmapSeries
    createHeatmapSeries(String name)
    Creates and adds a new heatmap series to this chart.
    protected EChartsSeries
    getDefaultSeries()
    Returns the default series type for this chart.

    Methods inherited from class com.oorian.echarts.EChartsChart

    addSeries, addXAxis, addYAxis, create, getChartTitle, getGrid, getLegend, getSeries, getToolbox, getTooltip, getXAxis, getYAxis, initFromJson, setGrid, setLegend, setSeries, setTitle, setToolbox, setTooltip, setXAxis, setYAxis, toJsonString, toJsonValue

    Methods inherited from class com.oorian.html.StyledContainerElement

    addElement, addLineOfText, addLineOfText, addLineOfText, addParagraph, addParagraph, addSpacer, addText, addText, addText, addText, insertElement, removeAllElements, removeElement, removeElement, setElement, setText, setText, setText, setText

    Methods inherited from class com.oorian.html.StyledElement

    addClass, addStyle, addStyle, addStyleAttribute, addTransition, animate, clearTransitions, getActiveStyle, getCssClass, getDisabledStyle, getFocusStyle, getFocusVisibleStyle, getHoverStyle, getHtml, getStyle, getStyleAttribute, hidden, hide, initialize, isDisplayed, isTransitionForwardActive, onHide, onRemovedFromPage, onShow, removeClass, setActiveStyle, setAlignContent, setAlignContent, setAlignItems, setAlignItems, setAlignSelf, setAlignSelf, setAnimation, setAnimationDelay, setAnimationDelay, setAnimationDelay, setAnimationDirection, setAnimationDirection, setAnimationDuration, setAnimationDuration, setAnimationDuration, setAnimationFillMode, setAnimationFillMode, setAnimationIterationCount, setAnimationIterationCount, setAnimationIterationCount, setAnimationName, setAnimationPlayState, setAnimationPlayState, setAnimationTimingFunction, setAnimationTimingFunction, setAnimationTimingFunction, setAnimationTimingFunction, setBackdropFilter, setBackdropFilter, setBackfaceVisibility, setBackfaceVisibility, setBackground, setBackground, setBackgroundAttachment, setBackgroundAttachment, setBackgroundBlendMode, setBackgroundBlendMode, setBackgroundClip, setBackgroundClip, setBackgroundColor, setBackgroundColor, setBackgroundColor, setBackgroundImage, setBackgroundImage, setBackgroundOrigin, setBackgroundOrigin, setBackgroundPosition, setBackgroundPosition, setBackgroundPosition, setBackgroundPosition, setBackgroundPosition, setBackgroundRepeat, setBackgroundRepeat, setBackgroundSize, setBackgroundSize, setBackgroundSize, setBackgroundSize, setBackgroundSize, setBlur, setBorder, setBorder, setBorder, setBorder, setBorder, setBorder, setBorder, setBorder, setBorder, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottom, setBorderBottomColor, setBorderBottomColor, setBorderBottomLeftRadius, setBorderBottomLeftRadius, setBorderBottomLeftRadius, setBorderBottomRightRadius, setBorderBottomRightRadius, setBorderBottomRightRadius, setBorderBottomStyle, setBorderBottomStyle, setBorderBottomWidth, setBorderBottomWidth, setBorderBottomWidth, setBorderBottomWidth, setBorderColor, setBorderColor, setBorderColor, setBorderColor, setBorderImage, setBorderImage, setBorderImageOutset, setBorderImageRepeat, setBorderImageSlice, setBorderImageSource, setBorderImageWidth, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeft, setBorderLeftColor, setBorderLeftColor, setBorderLeftStyle, setBorderLeftStyle, setBorderLeftWidth, setBorderLeftWidth, setBorderLeftWidth, setBorderLeftWidth, setBorderRadius, setBorderRadius, setBorderRadius, setBorderRadius, setBorderRadius, setBorderRadius, setBorderRight, setBorderRight, setBorderRight, setBorderRight, setBorderRight, setBorderRight, setBorderRight, setBorderRight, setBorderRightColor, setBorderRightColor, setBorderRightStyle, setBorderRightStyle, setBorderRightWidth, setBorderRightWidth, setBorderRightWidth, setBorderRightWidth, setBorderStyle, setBorderStyle, setBorderTop, setBorderTop, setBorderTop, setBorderTop, setBorderTop, setBorderTop, setBorderTop, setBorderTop, setBorderTopColor, setBorderTopColor, setBorderTopLeftRadius, setBorderTopLeftRadius, setBorderTopLeftRadius, setBorderTopRightRadius, setBorderTopRightRadius, setBorderTopRightRadius, setBorderTopStyle, setBorderTopStyle, setBorderTopWidth, setBorderTopWidth, setBorderTopWidth, setBorderTopWidth, setBorderWidth, setBorderWidth, setBorderWidth, setBorderWidth, setBorderWidth, setBorderWidth, setBorderWidth, setBottom, setBottom, setBottom, setBoxShadow, setBoxShadow, setBoxShadow, setBoxShadow, setBoxShadow, setBoxSizing, setBoxSizing, setBreakAfter, setBreakBefore, setBreakInside, setBrightness, setClass, setClear, setClear, setClip, setClipPath, setClipPath, setColGap, setColGap, setColor, setColor, setColumnCount, setColumnCount, setColumnFill, setColumnFill, setColumnGap, setColumnRule, setColumnRuleColor, setColumnRuleColor, setColumnRuleStyle, setColumnRuleStyle, setColumnRuleWidth, setColumnRuleWidth, setColumns, setColumns, setColumns, setColumnSpan, setColumnWidth, setColumnWidth, setColumnWidth, setContrast, setCounterIncrement, setCounterReset, setCursor, setCursor, setDirection, setDirection, setDisabledStyle, setDisplay, setDisplay, setFilter, setFilter, setFilterOpacity, setFlex, setFlexBasis, setFlexDirection, setFlexDirection, setFlexFlow, setFlexGrow, setFlexGrow, setFlexShrink, setFlexShrink, setFlexWrap, setFlexWrap, setFloat, setFloat, setFocusStyle, setFocusVisibleStyle, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFont, setFontFace, setFontFamily, setFontFamily, setFontFeatureSettings, setFontKerning, setFontLanguageOverride, setFontSize, setFontSize, setFontSize, setFontSizeAdjust, setFontStretch, setFontStretch, setFontStyle, setFontStyle, setFontSynthesis, setFontVariant, setFontVariant, setFontVariantAlternates, setFontVariantCaps, setFontVariantEastAsian, setFontVariantLigatures, setFontVariantNumeric, setFontVariantPosition, setFontWeight, setFontWeight, setGap, setGap, setGap, setGap, setGrayscale, setHangingPunctuation, setHangingPunctuation, setHeight, setHeight, setHeight, setHoverStyle, setHueRotate, setHyphens, setImageOrientation, setImageRendering, setImageResolution, setImeMode, setInvert, setJustifyContent, setJustifyContent, setKeyFrames, setLeft, setLeft, setLeft, setLetterSpacing, setLetterSpacing, setLetterSpacing, setLetterSpacing, setLineBreak, setLineHeight, setLineHeight, setLineHeight, setLineHeight, setMargin, setMargin, setMargin, setMargin, setMargin, setMarginBottom, setMarginBottom, setMarginBottom, setMarginLeft, setMarginLeft, setMarginLeft, setMarginRight, setMarginRight, setMarginRight, setMarginTop, setMarginTop, setMarginTop, setMark, setMarkAfter, setMarkBefore, setMarks, setMarqueeDirection, setMarqueePlayCount, setMarqueeSpeed, setMarqueeStyle, setMask, setMaskType, setMaxHeight, setMaxHeight, setMaxHeight, setMaxHeightToWindowHeight, setMaxWidth, setMaxWidth, setMaxWidth, setMaxWidthToWindowWidth, setMinHeight, setMinHeight, setMinHeight, setMinHeightToWindowHeight, setMinWidth, setMinWidth, setMinWidth, setMinWidthToWindowWidth, setNavDown, setNavIndex, setNavIndex, setNavLeft, setNavRight, setNavUp, setObjectFit, setObjectPosition, setOnClickNavigateBack, setOnClickNavigateBack, setOnClickNavigateBack, setOnClickNavigateForward, setOnClickNavigateForward, setOnClickNavigateForward, setOnClickNavigateTo, setOnDblClick, setOnDblClickChange, setOpacity, setOpacity, setOrder, setOrder, setOrphans, setOutline, setOutline, setOutline, setOutline, setOutlineColor, setOutlineColor, setOutlineOffset, setOutlineOffset, setOutlineOffset, setOutlineStyle, setOutlineStyle, setOutlineWidth, setOutlineWidth, setOutlineWidth, setOutlineWidth, setOverflow, setOverflow, setOverflow, setOverflowWrap, setOverflowX, setOverflowX, setOverflowY, setOverflowY, setPadding, setPadding, setPadding, setPadding, setPadding, setPadding, setPadding, setPadding, setPaddingBottom, setPaddingBottom, setPaddingBottom, setPaddingLeft, setPaddingLeft, setPaddingLeft, setPaddingRight, setPaddingRight, setPaddingRight, setPaddingTop, setPaddingTop, setPaddingTop, setPageBreakAfter, setPageBreakAfter, setPageBreakBefore, setPageBreakBefore, setPageBreakInside, setPageBreakInside, setPerspective, setPerspective, setPerspective, setPerspectiveOrigin, setPerspectiveOrigin, setPerspectiveOrigin, setPerspectiveOrigin, setPhonemes, setPosition, setPosition, setPosition, setPosition, setPosition, setQuotes, setResize, setResize, setResizeToWindowHeight, setResizeToWindowHeight, setResizeToWindowWidth, setRest, setRestAfter, setRestBefore, setRight, setRight, setRight, setRotate, setRotate, setRowGap, setRowGap, setSaturate, setScale, setScale, setSepia, setShow, setSize, setSize, setSize, setSkewX, setSkewY, setStyle, setStyle, setTabSize, setTabSize, setTabSize, setTabSize, setTextAlign, setTextAlign, setTextAlignLast, setTextAlignLast, setTextCombineUpright, setTextCombineWeight, setTextDecoration, setTextDecoration, setTextDecorationColor, setTextDecorationColor, setTextDecorationLine, setTextDecorationLine, setTextDecorationStyle, setTextDecorationStyle, setTextIndent, setTextIndent, setTextIndent, setTextIndent, setTextJustify, setTextJustify, setTextOrientation, setTextOverflow, setTextOverflow, setTextSelectDisabled, setTextShadow, setTextShadow, setTextShadow, setTextShadow, setTextShadow, setTextTransform, setTextTransform, setTextUnderlinePosition, setTop, setTop, setTop, setTransform, setTransform, setTransformOrigin, setTransformOrigin, setTransformOrigin, setTransformOrigin, setTransformOrigin, setTransformStyle, setTransformStyle, setTransition, setTransitionDelay, setTransitionDelay, setTransitionDelay, setTransitionDuration, setTransitionDuration, setTransitionDuration, setTransitionProperty, setTransitionTimingFunction, setTransitionTimingFunction, setTransitionTimingFunction, setTransitionTimingFunction, setTranslateX, setTranslateY, setTranslateZ, setUnicodeBidi, setUnicodeBidi, setVerticalAlign, setVerticalAlign, setVisibility, setVisibility, setVoiceBalance, setVoiceDuration, setVoicePitch, setVoicePitchRange, setVoiceRate, setVoiceStress, setVoiceVolume, setWhiteSpace, setWhiteSpace, setWidows, setWidth, setWidth, setWidth, setWordBreak, setWordBreak, setWordSpacing, setWordSpacing, setWordSpacing, setWordSpacing, setWordWrap, setWordWrap, setWritingMode, setZIndex, setZIndex, show, shown, stopAnimation, transitionForward, transitionForward, transitionReverse, transitionReverse, updateStyle, updateStyle, updateStyleIfChanged

    Methods inherited from class com.oorian.html.VisualElement

    clearOnClick, click, disable, enable, getAccessKey, getAutoCapitalize, getEnterKeyHint, getInputMode, getPopover, getRole, getTabIndex, getTitle, isAutoFocus, isContentEditable, isDisabled, isDraggable, isHidden, isInert, isSpellCheck, onDisabled, onEnabled, setAccessKey, setAriaAtomic, setAriaBusy, setAriaChecked, setAriaCheckedMixed, setAriaControls, setAriaCurrent, setAriaDescribedBy, setAriaDisabled, setAriaErrorMessage, setAriaExpanded, setAriaHasPopup, setAriaHasPopup, setAriaHidden, setAriaInvalid, setAriaLabel, setAriaLabelledBy, setAriaLevel, setAriaLive, setAriaModal, setAriaOwns, setAriaPressed, setAriaRequired, setAriaSelected, setAriaValueRange, setAriaValueText, setAutoCapitalize, setAutoFocus, setConsumeEvent, setContentEditable, setDisabled, setDraggable, setDropAllowed, setEnterKeyHint, setFocus, setHidden, setInert, setInputMode, setOnAnimationCancel, setOnAnimationEnd, setOnAnimationIteration, setOnAnimationStart, setOnAuxClick, setOnBeforeInput, setOnBeforeToggle, setOnBlur, setOnChange, setOnClick, setOnClickChange, setOnCompositionEnd, setOnCompositionStart, setOnCompositionUpdate, setOnContextMenu, setOnCopy, setOnCut, setOnDocumentResize, setOnFocus, setOnFocusIn, setOnFocusOut, setOnFormData, setOnGotPointerCapture, setOnInput, setOnInvalid, setOnKeyDown, setOnKeyPressed, setOnKeyUp, setOnLostPointerCapture, setOnMouseDown, setOnMouseEnter, setOnMouseLeave, setOnMouseMove, setOnMouseOut, setOnMouseOutChangeClass, setOnMouseOutChangeStyle, setOnMouseOutChangeStyle, setOnMouseOver, setOnMouseOverChangeClass, setOnMouseOverChangeStyle, setOnMouseOverChangeStyle, setOnMouseOverShow, setOnMouseUp, setOnPageLoad, setOnPaste, setOnPointerCancel, setOnPointerDown, setOnPointerEnter, setOnPointerLeave, setOnPointerMove, setOnPointerOut, setOnPointerOver, setOnPointerUp, setOnResize, setOnScroll, setOnScrollEnd, setOnSelect, setOnSelectionChange, setOnSelectStart, setOnToggle, setOnTouchCancel, setOnTouchEnd, setOnTouchMove, setOnTouchStart, setOnTransitionCancel, setOnTransitionEnd, setOnTransitionRun, setOnTransitionStart, setOnWheel, setOnWindowResize, setPopover, setRole, setRole, setSpellCheck, setTabIndex, setTitle, setTooltip

    Methods inherited from class com.oorian.html.Element

    addAttribute, addAttribute, addAttribute, addAttribute, addLineBreak, assignId, containsElement, containsElement, dispatchEvent, dispatchEvent, dispatchEvent, dispatchEvent, equals, excludeId, executeJs, executeJs, executeJs, getAccept, getAllElements, getAncestor, getAttribute, getAttributes, getComponent, getDir, getElement, getElementById, getElementCount, getElementCount, getElements, getElements, getElementsByComponentName, getElementsByTagName, getHtml, getId, getInnerHtml, getInnerHtml, getIs, getItemId, getItemProp, getItemRef, getItemType, getLang, getNextSibling, getPage, getParent, getPart, getPrevSibling, getSlot, getTagName, getTextContent, getUrl, hasAttribute, hasElements, isChildOf, isClosedTag, isCreated, isDescendantOf, isDescendantOf, isInitialized, isItemScope, isTranslate, onCallback, onCreated, onElementAdded, onElementRemoved, onHashChange, onHidden, onInitialized, onJsReturn, onPageLoaded, onPageUnloaded, onRefresh, onShown, onUpdated, onUserEvent, prewrite, recreate, refresh, refresh, registerAddition, registerListener, registerListener, registerListener, registerListener, registerListener, registerListener, registerListener, registerSubtraction, registerUpdate, removeAttribute, removeAttribute, removeFromParent, requestCallback, requestCallback, requestCallback, requestCallback, resetId, scrollTo, scrollToBottom, scrollToTop, self, sendCommand, sendUpdate, setAccept, setComponent, setDir, setDir, setId, setIs, setItemId, setItemProp, setItemRef, setItemScope, setItemType, setLang, setOnError, setOnLoad, setPage, setParent, setPart, setSlot, setTagName, setTranslate, toString, unregisterListener, update, updateAttributes

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    Methods inherited from interface com.oorian.json.Jsonable

    initFromJson, initFromJson

  • Constructor Details

    • EChartsHeatmapChart

      public EChartsHeatmapChart()
      Constructs a new EChartsHeatmapChart.

  • Method Details

    • addHeatmapSeries

      public void addHeatmapSeries(EChartsHeatmapSeries heatmapSeries)
      Adds an existing heatmap series to this chart.
      Parameters:
      heatmapSeries - the heatmap series to add

    • createHeatmapSeries

      public EChartsHeatmapSeries createHeatmapSeries(String name)
      Creates and adds a new heatmap series to this chart.
      Parameters:
      name - the name for the heatmap series
      Returns:
      the created EChartsHeatmapSeries instance

    • getDefaultSeries

      protected EChartsSeries getDefaultSeries()
      Description copied from class: EChartsChart
      Returns the default series type for this chart.

      This method is used during deserialization to create the appropriate series instances when loading chart data from JSON.

      Specified by:
      getDefaultSeries in class EChartsChart<EChartsHeatmapChart>
      Returns:
      a new instance of the appropriate EChartsSeries subclass