Released: May 7, 2025

Updates in v7.1.0

Features

• Nanosecond-precision timestamps: Enhanced Date-Time axis now supports nanoseconds, allowing users to zoom into micro and nanosecond levels for detailed analysis, beyond millisecond limits.
• HTML Text Rendering: HTML text rendering option enhances text sharpness and supports advanced formats like LaTeX and multi-line text, as an alternative to the default WebGL rendering.
• Introduced scaleTheme API: Allows for symmetrical scaling of all visual elements within a chart, including font sizes, paddings, tick lengths, and button sizes.
• Added new fitting modes for axes, including Top (Default), Center and Bottom.
• Added new utility function that simplifies retrieving the data extents associated with any specific axis. This provides a convenient way to programmatically determine the minimum and maximum values of the data currently linked to an axis.
• Added new chart examples: JavaScript Synced Cursors Chart and JavaScript Nanosecond Timestamp Chart.
• Added scaleThemeFontSize:
  • Convenience function to up or downscale font sizes as well as tick lengths, element paddings etc. to make font sizes sit in nicely.
• Added Axis.getSeriesDataRange:
  • Quality of life method to get data extents of all series attached to an Axis.
• Added new capabilities to AxisScrollStrategies:
  • For fitting, expansion and fittingStepped you can now specify whether it should affect axis start and/or end. By default affects both sides.
  • Added scrolling. This is the replacement to now deprecated progressive and regressive. It also has a new feature for real-time scrolling: a new scrolling mode for axes, specifically optimized for batched data updates (where data arrives infrequently e.g. every 1s).
• Introduced HTML text rendering option (beta):
  • Can be enabled for sharper text display where required with drawback of weaker performance.
  • For more information refer to HTML text rendering section in developer documentation.
• Added singleClick option to setUserInteractions restoreDefault and restorePrevious interactions:
  • Allows firing the interactions on single click (lmb/rmb/mmb).
• Added Axis.setScrollMargins method for controlling automatic spacing between axis edges and series.
• Added ZoomBandChart.setStopAxisOnInteraction.
• Added some missing APIs to ZoomBandChart: getLayout, chart, and some events to addEventListener.
• Added optional skipIntervalRestrictions parameter to Axis.setDefaultInterval:
  • Situationally useful as previously setting axis default interval always ignored any interval restrictions.
• Improved zoom capabilities of AxisTickStrategies.DateTime:
  • Now allows zooming up to individual nanoseconds.
  • Nanosecond timestamps must be loaded to charts as Float64 after shifting to start from 0 and converting to milliseconds.
• Improved radial gradient quality.
• Domain locked license keys now allow running charts inside same origin iframes.
• LightningChart JS now adds overflow: hidden to its container DIV style always.
• ChartXY default cursor formatter now displays axis titles (if any) instead of "X" or "Y".
• Deprecated AxisScrollStrategy, AxisScrollStrategies.progressive, AxisScrollStrategies.regressive, AxisScrollStrategies.fittingStart, and AxisScrollStrategies.fittingEnd:
  • AxisScrollStrategy to AxisScrollStrategyNew.
  • AxisScrollStrategies.progressive to AxisScrollStrategies.scrolling.
  • AxisScrollStrategies.regressive to AxisScrollStrategies.scrolling({ progressive: false }).
  • AxisScrollStrategies.fittingStart to AxisScrollStrategies.fitting({ end: false }).
  • AxisScrollStrategies.fittingEnd to AxisScrollStrategies.fitting({ start: false }).
• Deprecated Axis.setAutoRegionsEnabled in favour of Axis.setScrollMargins.

Fixes

• Fixed cursor performance degradation (CPU use is increased after cursor is shown with a lot of content, even if cursor is hidden afterwards).
• Fixed Axis.setTitleRotation sometimes not updating title display.
• Fixed PointLineAreaSeries render error when zoomed out and coordinates are larger than 10^16.
• Fixed ZoomBandChart not automatically adjusting if connected to an inverted axis.
• Fixed PyramidChart, PieChart, FunnelChart not being able to display negative values.
• Fixed some small effect rendering errors:
  • Glows becoming "dashed" in Chart3D bounding box borders sometimes.
  • Glows cutting off slightly before ChartXY series area edges.
  • ChartXY series background border drawn above glow effects.