Protected _shadingAdd callback function to be triggered when specified event is fired.
// Example syntax
object.addEventListener('click', (event) => {
console.log(event)
})
Some classes also report extra information about the interacted object with the second parameter:
// Most series share information about interacted data point
series.addEventListener('click', (event, info) => {
console.log(info)
})
Optional third parameter allows registering event handlers that will automatically remove themselves after first trigger:
// Example this listener will only fire once
object.addEventListener('click', (event) => {})
Each class has its own list of supported events.
Some events are from HTML standard (click, pointerdown, etc.),
while others are own events from LightningChart JS (dispose, resize, etc.)
To find what events are available, you can try following:
TypeScript enabled, just write addEventListener and see what possible event types the IDE suggests. These APIs are strongly typed, and even the callback event will be correctly typed.K type parameter extends.Callback function that is triggered when event is fired.
Optional options: LCJSAddEventListenerOptionsOptional extra configuration options.
Attach object to an legendBox entry
Series itself for fluent interface
Object which has to be attached
Flag that indicates whether the Attachable should be hidden or not, when its respective Entry is clicked.
By default, entries are assigned a smooth looking gradient based on the component color. If this flag is true, then this is skipped, and exact component solid fill is used instead.
Permanently destroy the component.
To fully allow Garbage-Collection to free the resources used by the component, make sure to remove any references to the component and its children in application code.
let chart = ...ChartXY()
let axisX = chart.getDefaultAxisX()
// Dispose Chart, and remove all references so that they can be garbage-collected.
chart.dispose()
chart = undefined
axisX = undefined
Object itself for fluent interface
Get whether series is taken into account with automatic scrolling and fitting of attached axes.
By default, this is true for all series.
true default, axes will take series into account in scrolling and fitting operations.
false, axes will ignore series boundaries.
Get cull mode for this Surface grid series.
Culling means skipping drawing of specific geometry parts, based on its orientation.
'disabled' -> full geometry is drawn.
'cull-back' -> the behind of geometry is not drawn.
'cull-front' -> the front of geometry is not drawn.
Surface series default cull mode is 'disabled' to show both sides of the surface.
Active cull mode.
Beta
Get override behavior for when this series is formatted to be displayed by a cursor.
Override callback or undefined
Introduced in v6.0.0, the state and definition of this API is not finalized. It may change in future versions without regard to backwards compatibility if there is significant cause from user feedback.
Get theme effect enabled on component or disabled.
A theme can specify an Effect to add extra visual oomph to chart applications, like Glow effects around data or other components.
Whether this effect is drawn above a particular component can be configured using the setEffect method.
// Example, disable theme effect from a particular component.
Component.setEffect(false)
For the most part, theme effects are enabled by default on most components.
Theme effect is configured with effect property.
Boolean that describes whether drawing the theme effect is enabled around the component or not.
Get surface intensity interpolation mode.
Get boolean flag that is true when a Pointer device is over the chart component.
In order for this method to work, the components pointer event tracking must be enabled (getPointerEvents)
Boolean
Invalidate range of surface HEIGHT values starting from first column and row. These values correspond to coordinates along the Y axis.
See the other overload of this method for invalidating a surface grid section which doesn't start from the first column and row.
// Example, 3x3 surface full invalidation.
const surfaceGridSeries = Chart3D.addSurfaceGridSeries({
dataOrder: 'columns',
columns: 3,
rows: 3
})
surfaceGridSeries.invalidateHeightMap([
// Column 1 height (Y) values.
[0, 0, 0],
// Column 2 height (Y) values.
[1, 1, 1],
// Column 3 height (Y) values.
[0, 2, 0],
])
Data interpretation basis is defined by dataOrder property from when the series was created. Can be either list of columns, or list of rows.
invalidateHeightMap can trigger warnings when used controversially.
In production applications, these can be controlled with warnings.
Object itself for fluent interface.
Matrix (array of arrays) of height values.
Invalidate a partial range of surface HEIGHT values. These values correspond to coordinates along the Y axis.
// Example, 100x10 surface invalidate partial section of surface.
const surfaceGridSeries = Chart3D.addSurfaceGridSeries({
dataOrder: 'columns',
columns: 100,
rows: 10
})
surfaceGridSeries.invalidateHeightMap({
// Index of first invalidated column.
iColumn: 50,
// Index of first invalidated row.
iRow: 2,
// Height (Y) values matrix. It's dimensions imply the amount of invalidated columns & rows.
values: [
// 1st invalidated column height (Y) values.
[1, 1, 1, 1, 1],
// 2nd invalidated column height (Y) values.
[2, 2, 2, 2, 2],
// 3rd invalidated column height (Y) values.
[1, 0, 0, 0, 1],
// 4th invalidated column height (Y) values.
[0, 1, 0, 1, 0],
// 5th invalidated column height (Y) values.
[0, 0, 1, 0, 0],
],
})
invalidateIntensityValues can trigger warnings when used controversially.
In production applications, these can be controlled with warnings.
Object itself for fluent interface.
Partial invalidation information, where values is an height (Y) value matrix, iColumn the first affected column and iRow the first affected row.
Invalidate range of surface INTENSITY values starting from first column and row, updating coloring if a Color look up table (LUT) has been attached to the series (see setFillStyle).
See the other overload of this method for invalidating a surface grid section which doesn't start from the first column and row.
// Example, 3x3 surface full invalidation.
const surfaceGridSeries = Chart3D.addSurfaceGridSeries({
dataOrder: 'columns',
columns: 3,
rows: 3
})
surfaceGridSeries.invalidateIntensityValues([
// Column 1 intensity values.
[0, 0, 0],
// Column 2 intensity values.
[1, 1, 1],
// Column 3 intensity values.
[0, 2, 0],
])
Data interpretation basis is defined by dataOrder property from when the series was created. Can be either list of columns, or list of rows.
invalidateIntensityValues can trigger warnings when used controversially.
In production applications, these can be controlled with warnings.
Object itself for fluent interface.
Matrix (array of arrays) of intensity values.
Invalidate a partial range of surface INTENSITY values, updating coloring if a Color look up table (LUT) has been attached to the series (see setFillStyle).
// Example, 100x10 surface invalidate partial section of surface.
const surfaceGridSeries = Chart3D.addSurfaceGridSeries({
dataOrder: 'columns',
columns: 100,
rows: 10
})
surfaceGridSeries.invalidateIntensityValues({
// Index of first invalidated column.
iColumn: 50,
// Index of first invalidated row.
iRow: 2,
// Intensity values matrix. It's dimensions imply the amount of invalidated columns & rows.
values: [
// 1st invalidated column intensity values.
[1, 1, 1, 1, 1],
// 2nd invalidated column intensity values.
[2, 2, 2, 2, 2],
// 3rd invalidated column intensity values.
[1, 0, 0, 0, 1],
// 4th invalidated column intensity values.
[0, 1, 0, 1, 0],
// 5th invalidated column intensity values.
[0, 0, 1, 0, 0],
],
})
invalidateIntensityValues can trigger warnings when used controversially.
In production applications, these can be controlled with warnings.
Object itself for fluent interface.
Partial invalidation information, where values is an intensity value matrix, iColumn the first affected column and iRow the first affected row.
Remove event listener added using addEventListener.
The expected argument should be the exact same callback function that was supplied using addEventListener:
// Basic example syntax
const listener = () => {}
obj.addEventListener('click', listener)
obj.removeEventListener('click', listener)
// Basic boilerplate of custom interaction when user drags on an object
obj.addEventListener('pointerdown', (eventDown) => {
let prevCoord = eventDown
const handlePointerMove: LCJSInteractionEventListener<'pointermove'> = (eventMove) => {
const delta = { x: eventMove.clientX - prevCoord.clientX, y: eventMove.clientY - prevCoord.clientY }
prevCoord = eventMove
console.log(delta, eventMove.clientX, eventMove.clientY)
}
const handlePointerUp: LCJSInteractionEventListener<'pointerup'> = (eventUp) => {
window.removeEventListener('pointermove', handlePointerMove)
window.removeEventListener('pointerup', handlePointerUp)
}
window.addEventListener('pointermove', handlePointerMove)
window.addEventListener('pointerup', handlePointerUp)
})
Listener that was added using addEventListener.
Set component highlight animations enabled or not. For most components this is enabled by default.
// Example usage, disable highlight animations.
component.setAnimationHighlight(false)
Object itself
Animation enabled?
Set whether series is taken into account with automatic scrolling and fitting of attached axes.
By default, this is true for all series.
By setting this to false, any series can be removed from axis scrolling/fitting.
// Example syntax, remove series from automatic scrolling / fitting.
LineSeries.setAutoScrollingEnabled(false)
Object itself for fluent interface.
true default, axes will take series into account in scrolling and fitting operations.
false, axes will ignore series boundaries.
Set Color Shading Style for series.
Shading style changes the visual style of the rendering. See ColorShadingStyles for available shading styles.
Use Simple color shading style:
series3D.setShadingStyle(new ColorShadingStyles.Simple())
Use Phong color shading style:
series3D.setShadingStyle(new ColorShadingStyles.Phong())
Configuring specular highlight for Phong shading style:
series3D.setShadingStyle(new ColorShadingStyles.Phong({
specularReflection: 0.5,
specularColor: ColorRGBA(255, 255, 255)
}))
Object itself for fluent interface.
Color shading style to use for this series.
Set culling of this Surface grid series.
Culling means skipping drawing of specific geometry parts, based on its orientation.
'disabled' -> full geometry is drawn.
'cull-back' -> the behind of geometry is not drawn.
'cull-front' -> the front of geometry is not drawn.
Surface series default cull mode is 'disabled' to show both sides of the surface.
Object itself for fluent interface.
CullMode3D or false | true to disable/enable culling respectively.
Configure whether cursors should pick on this particular series or not.
// Example, prevent chart auto cursor from snapping to a series.
LineSeries.setCursorEnabled(false)
Related API:
Beta
Set override behavior for when this series is formatted to be displayed by a cursor. This can be used to alter and expand on cursor formatting done for a specific series, either by the library's default cursor formatters or even the users own cursor formatters defined on chart level.
// Example syntax, add extra row to display a custom data property
series.setCursorFormattingOverride((hit, before) => {
if (!isHitSampleXY(hit)) return before
const customPropertyValue = data[hit.iSample].customProperty
return [...before, ['ASD', '', customPropertyValue.toFixed(3)]]
})
To use this with users own cursor formatters, you can use useCursorFormatterSeriesOverride:
// Example syntax, define custom cursor formatting with support for series overrides
chart.setCursorFormatting((_, __, hits) => {
return [
[hits[0].axisX.formatValue(hits[0].x)],
...hits.map((hit) => useCursorFormatterSeriesOverride(hit, [['Y:', '', hit.axisY.formatValue(hit.y)]])).flat(),
]
})
Object itself.
Introduced in v6.0.0, the state and definition of this API is not finalized. It may change in future versions without regard to backwards compatibility if there is significant cause from user feedback.
Override callback or undefined
Set 3D depth test enabled for this series.
By default this is enabled, meaning that any series that is rendered after this series and is behind this series will not be rendered.
Can be disabled to alter 3D rendering behavior.
// Example syntax, disable depth test.
pointSeries3D.setDepthTestEnabled(false)
Object itself for fluent interface.
Depth test enabled?
Set theme effect enabled on component or disabled.
A theme can specify an Effect to add extra visual oomph to chart applications, like Glow effects around data or other components.
Whether this effect is drawn above a particular component can be configured using the setEffect method.
// Example, disable theme effect from a particular component.
Component.setEffect(false)
For the most part, theme effects are enabled by default on most components.
Theme effect is configured with effect property.
Object itself.
Theme effect enabled
Set end coordinate of Heatmap on its X and Z axis.
Object itself.
Coordinate on axis where last heatmap sample will be positioned.
Set fill style of Surface Grid.
Supported fill styles:
Look-up dynamic per-CELL color based on a look up property and a color look up table (LUT).
SurfaceGridSeries3D supports several different look-up modes:
lookUpProperty: 'value':
Color each CELL based on its INTENSITY value. Cell intensity values can be specified with invalidateIntensityValues.
// Example, enable dynamic coloring based on cell intensity data.
surfaceGridSeries
.setFillStyle(new PalettedFill({
lookUpProperty: 'value',
lut: new LUT({
interpolate: true,
steps: [
{ value: 0, color: ColorRGBA(0, 0, 0) },
{ value: 100, color: ColorRGBA(255, 0, 0) }
]
})
}))
Note, Surface grid series doesn't currently support color (fallback color).
lookUpProperty: 'x' | 'y' | 'z':
Color each CELL based on one of its axis coordinates.
// Example, enable dynamic coloring based on cell Y coordinate.
surfaceGridSeries
.setFillStyle(new PalettedFill({
lookUpProperty: 'y',
lut: new LUT({
interpolate: true,
steps: [
{ value: 0, color: ColorRGBA(0, 0, 0) },
{ value: 100, color: ColorRGBA(255, 0, 0) }
]
})
}))
Intensity based dynamic coloring can further be configured with setIntensityInterpolation to enable or disable automatic interpolation of Intensity values. This is enabled by default.
Solid color for entire Surface Grid fill.
// Example, solid surface grid fill.
heatmapSeries.setFillStyle(new SolidFill({ color: ColorRGBA(255, 0, 0) }))
If only wireframe rendering is desired, using emptyFill is recommended for better performance.
Disables Surface Grid fill.
// Example, hide heatmap fill and show wireframe.
heatmapSeries
.setFillStyle(emptyFill)
.setWireframeStyle(new SolidFill({ color: ColorRGBA(255, 0, 0) }))
Related functionality:
Object itself.
FillStyle object or function which modifies current value. Supported FillStyle types: SolidFill, PalettedFill, emptyFill
Set state of component highlighting.
// Example usage
component.setHighlight(true)
component.setHighlight(0.5)
If highlight animations are enabled (which is true by default), the transition will be animated. As long as the component is highlighted, the active highlight intensity will be animated continuously between 0 and the configured value. Highlight animations can be disabled with setAnimationHighlight
Object itself
Boolean or number between 0 and 1, where 1 is fully highlighted.
Set highlight on mouse hover enabled or disabled.
Mouse interactions have to be enabled on the component for this to function as expected. See setPointerEvents for more information.
Object itself for fluent interface.
True if highlighting on mouse hover, false if no highlight on mouse hover
Beta
Set icon of the chart component. This is displayed in legends and by default cursor formatters.
const image = new Image()
image.src = 'image.png'
const icon = chart.engine.addCustomIcon(image)
ChartComponent.setIcon(icon)
Object itself.
Released as beta feature in v5.2.0 feature may still change according to user feedback and experiences.
Icon
Set surface intensity interpolation mode.
This only affects surface grid with INTENSITY based dynamic coloring, see setFillStyle for more information.
This feature is enabled by default ('bilinear').
'disabled' or undefined: Interpolation disabled; draw data exactly as it is.
'bilinear': Each PIXEL is colored based on an Bi-linearly interpolated intensity value based on the 4 closest real intensity values.
Object itself for fluent interface.
Surface intensity interpolation mode selection.
Sets the name of the Component updating attached LegendBox entries
Object itself
Name of the Component
Set whether element can be target of pointer events or not.
Disabling pointer events means that the objects below this component can be interacted through it.
Object itself for fluent interface
Specifies state of mouse interactions
Set start coordinate of Heatmap on its X and Z axis.
Object itself.
Coordinate on axis where 1st heatmap sample will be positioned.
Set Step between each consecutive heatmap value on the X and Z Axes.
Object itself.
Axis offset between heatmap samples.
Set element visibility.
Object itself.
true when element should be visible and false when element should be hidden.
Set wireframe style of Surface Grid.
Wireframe consists of thin lines drawn around the borders of each surface CELL. They are generally enabled to improve the perception of surface shape.
Wireframe style is defined as LineStyle.
// Example 1, enable wireframe.
heatmapSeries.setWireframeStyle(new SolidLine({
thickness: 1,
fillStyle: new SolidFill({ color: ColorRGBA(255, 0, 0) })
}))
// Example 2, disable wireframe.
heatmapSeries.setWireframeStyle(emptyLine)
At this time, only solid wireframe rendering is supported. In future, this could be extended to coloring wireframe based on some dynamic properties (X, Y, Z, Intensity) similarly as surface fill.
Related functionality:
Object itself.
LineStyle object or function which modifies current value.
Match legend entry style to reflect components own style.
By default, entries are assigned a smooth looking gradient based on the component color. If this flag is true, then this is skipped, and exact component solid fill is used instead.
Series for visualizing a 3D Surface Grid inside Chart3D.
The grid is defined by imagining a plane along X and Z axis, split to < COLUMNS > (cells along X axis) and < ROWS > (cells along Z axis)
The total amount of < CELLS > in a surface grid is calculated as
columns * rows. Each < CELL > can be associated with DATA from an user data set.This series is optimized for massive amounts of data - here are some reference specs to give an idea:
Creating Surface Grid Series:
SurfaceGridSeries3Dare created with addSurfaceGridSeries method.Some properties of
SurfaceGridSeries3Dcan only be configured when it is created. Some of these arguments are optional, while some are required. They are all wrapped in a single object parameter:To learn about these properties, refer to SurfaceGridSeries3DOptions.
Frequently used methods:
SurfaceGridSeries3Dis suitable for visualizing a surface with unchanging locations along X and Z axes.For visualizing continuous sampling in 3D surface, refer to SurfaceScrollingGridSeries3D.