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Questions tagged [lightningchart]

Use this tag for questions regarding LightningChart JS or LightningChart .NET. Also add either javascript or c# tag to differentiate which library the question is related to.

LightningChart JS

LightningChart JS is a WebGL based, cross-platform charting library that has been developed for delivering an outstanding performance of your charts which ensures high refresh rates and smooth animations of your application. It features accessible API documentation, extensive functionality and an innovative dashboard control. Optimal for engineering, medicine, industrial process control and trading.

Example:

import { lightningChart } from '@arction/lcjs'
const chart = lightningChart().ChartXY()

Resources:

LightingChart .NET

LightningChart .NET is the fastest 2D & 3D data visualization SDK for WPF and Windows Forms. It has been actively developed since 2009. The charting library contains over 100 interactive charts with rich functionality that is suitable for creation of applications within the most demanding industries: science and research, engineering, economics and finance, trading, medicine, energy, space and defense

Resources

272 questions
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JS Line Chart - Null values \ Missing Data Points

I saw that in the .NET version of LightningChart that there is a way to add breaks in line charts. Is this possible in the JS version as well? I saw someone ask a similar question a couple years ago, but hoping that this has been implemented since…
Force
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LightningChartJS - Is it possible to enable cursor with ChartXY & AxisScrollStrategy (progressive)

I'm using LightningChartJS v. 3.0.1 and have a chart with scroll strategy. Live example: https://www.arction.com/lightningchart-js-interactive-examples/examples/lcjs-example-0803-scrollingHeatmap.html Is it possible to enable the cursor on user…
Maor Assayag
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Lightning Chart legend.autoDispose doesn't work

I'm working with a Lightning Chart JS example for Blazor server app. I've tried many Lightning Chart interactive examples, but I can't run "legend.setAutoDispose" or "legend.SetAutoDisposeMode". Not much help from the documentation. For example,…
AllanTe
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Is there a way to disable Candlestick aggregation in lightningchart js

I am trying to make an application for stocks with lightningchart js. I tried to put 30 days of 1-minute data into the chart but it is aggregating candles. This is my code const { lightningChart, emptyFill, OHLCFigures } = lcjs; const chart =…
Viktor Sudakov
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get custom value from point series data

I am adding data to scatter series like below , how do we receive the custom parameter value I add here series.add({ x: 0, y: 22, color: ColorRGBA(255, 0, 0), size: 10, rotation: 45, value: "custom message", …
Gracie williams
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In LightningChartJS, is there a way to do a drag zoom where the zoom for X and Y is always equal?

My problem is when I drag rectangle zoom for example (gyazo gif), the X axis is wider than the Y. In effect, the X axis is zoomed in more details than the Y and the visual of the graph looks different from the original…
Patrick John Pacana
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In lightning chart js how to disable marker in Y-axis

I am using this function this.chart.addChartMarkerXY, marker is showing for both x and y axis. i want to disable for y-axis need help. enter image description here
Manish Kumar Rai
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Drag the chart of Lightningchart programatically

I want to drag the charts around using Key board keys like up arrow to pan the chart up , down arrow to pan the chart down etc. const lcjs = lightningChart({ overrideInteractionMouseButtons: { chartXYPanMouseButton: 0, …
Gracie williams
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setDataCleaningThreshold for Area Range Series

I saw in version 3.00 there is something called setDataCleaningThreshold , Can you tell its benefits , I think it's for faster loading of progressive charts. const dcThreshold = xVal -…
Gracie williams
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1 answer

Reset Axis CustomTicks in LightningChartJS

I'm attempting to reset custom calculated Ticks on an xAxis Element of a LightningChartJS ChartXY Object after a scaleChange event has been fired. However, compared to the .net library, the JS API only seems to allow for adding new…
Jens Habegger
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Change cursor Line color - LightningChart

I am creating cursor like below var purple = new SolidFill({ color: ColorHEX('#ab00f5') }); // Create a builder for SeriesMarker to allow for full modification of its structure. var SeriesMarkerBuilder = MarkerBuilders.XY …
Gracie williams
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1 answer

Padding In right Side while Scrolling in Lightningchart

Below is the Chart I have created , I want to adding padding on right side while the dynamic chart is scrolling horizontally. This is my code that updates data to chart setInterval(function(){updateChart()}, 100); var updateChart = function () { …
Gracie williams
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2 answers

How can I move cursor over chart at any place and not just on the series data points?

I have 2 point line series each having default cursor on them. The default cursor runs along the series data (points). What I want is a cursor that I can move anywhere in the chart not just on the series data.
Soniya Shah
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Is there an example of a live candlestick chart being updated?

I'd like to have a candlestick chart that plots trade data from a websocket feed. The incoming trade data has price, volume, and date-Time. I've looked over all the documentation and demos, but I can't find any information on how to update an…
Mike
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LightningChart crashes when I draw a spectrogram using HeatmapGridSeries

While looking for a way to draw spectrograms in a web browser, I came across LightningChart. I'd like to draw something similar to the one above using the community version of LightningChart. Referring to LightningChart's API documentation and…
Youngchae Kim
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