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We are having the first experiences with SCIchart. Could someone help with this problem we are experiencing?

[ encore ] ERROR Failed to compile with 1 errors14:42:33 [ encore ]
Module build failed: Module not found: [ encore ]
“./node_modules/scichart/_wasm/scichart2d.wasm” contains a reference
to the file “a”. This file can not be found, please check it for typos
or update it if the file got moved. [ encore ] ERROR in
./resources/js/Pages/Home.vue?vue&type=template&id=6a63e488&scoped=true&ts=true
(./node_modules/unplugin/dist/webpack/loaders/transform.js?unpluginName=unplugin-vue-components!./node_modules/vue-loader/dist/templateLoader.js??ruleSet[1].rules[3]!./node_modules/vue-loader/dist/index.js??ruleSet[0].use[0]!./resources/js/Pages/Home.vue?vue&type=template&id=6a63e488&scoped=true&ts=true)
10:27 Module parse failed: Unexpected token (10:27) File was processed
with these loaders: *
./node_modules/unplugin/dist/webpack/loaders/transform.js *
./node_modules/unplugin/dist/webpack/loaders/transform.js *
./node_modules/vue-loader/dist/templateLoader.js *
./node_modules/vue-loader/dist/index.js You may need an additional
loader to handle the result of these loaders. | }, null, -1 /* HOISTED
*/)) |

export function render(_ctx: any,_cache: any,$props: any,$setup: any,$data: any,$options: any) { | return (_openBlock(),
_createElementBlock(“div”, _hoisted_1, [ | _createElementVNode(“h1”, null, _toDisplayString(_ctx.msg), 1 /* TEXT */),

ERROR in ./node_modules/scichart/_wasm/scichart2d.wasm Module not
found: Error: Can’t resolve ‘a’ in
‘C:\Users\clo\fr\Projeto\chart\App\node_modules\scichart_wasm’

ERROR in ./node_modules/scichart/_wasm/scichart3d.wasm Module not
found: Error: Can’t resolve ‘a’ in
‘C:\Users\clo\fr\Projeto\chart\App\node_modules\scichart_wasm’

webpack compiled with 3 errors

Hello,

I found an issue with very high memory usage by the application. after some tests I found the problem and moved it to a separate example(https://codepen.io/PodaRocheK/pen/PoVmzvP?editors=0011). Please check this code and observe the memory usage on this page. With prolonged use (after 10 minutes), it is clear that more and more memory is used. After hours, the memory used may already be more than several gigabytes. Tell me what the problem is, maybe I’m doing something wrong. Maybe I’m somehow storing old data incorrectly or adding it incorrectly.

This example is not a working example, it has been sped up in order to quickly identify the problem. In our example, an unnecessary data update will occur once every few seconds and after a night of inactivity, the entire page will die. Please tell me what the problem is.

Thank you!

Good afternoon. My team and I are looking at your library to create a depth chart, like here, but have run into a few problems:
1. if we have, for example, a “buySeries” array larger than the “sellSeries” array, the graph is not drawn very nicely.
2. the labels are not drawn correctly when we have too small numbers, I tried to solve the problem with xAxis.textFormatting = ‘0.#####’ or ‘0.00###’, but that doesn’t work for some reason.
3. If we want to add labels while hovering over the chart with showLabel = true , then we get 4 labels, two on yAxis. is it possible to make the buySeries label appear only on the left, for example, and the sellSeries label only on the right? (second screenshot)

Hello everyone. A similar question has already been asked just below the forum, but there is no answer. I have dynamically added diagrams. However, I am interested in the possibility of adding buttons for closing and collapsing diagrams directly to the chart panel. I need the option to close any selected chart. How can this be implemented and written? Thank you.

Hello I am using the following unixtimestamp format for the x axis and it renders some random numbers instead of treating them as dates. What is the correct format? please see attached screenshot.

export const dateValues: number[] = [
    1546300800000,
    1546304400000,
    1546308000000,
    1546311600000,
    1546315200000,
    1546318800000,
    1546322400000,
    1546326000000,
    1546329600000,
    1546333200000,
    1546336800000,
    1546340400000,
    1546344000000,
    1546347600000,
    1546351200000,
    1546354800000,
    1546358400000,
    1546362000000,
    1546365600000,
    1546369200000,
    1546372800000,
    1546376400000, ]

Here’s the code for creating the chart

  // Create a SciChartSurface
  const { sciChartSurface, wasmContext } = await SciChartSurface.create(
    "scichart-root"
  ); 

  sciChartSurface.xAxes.add(
        new CategoryAxis(wasmContext, {
          labelProvider: new SmartDateLabelProvider(),
          defaultXStep: 1546304400000 - 1546300800000,
          //growBy: new NumberRange(0.05, 0.05),
          drawMajorGridLines: true,
          drawMinorGridLines: true,
          axisAlignment: EAxisAlignment.Bottom,
          autoRange: EAutoRange.Once,
          drawMajorBands: false,
        })
      );

We managed to create a functioning chart, but sometimes when we first ran the chart it produced this error, followed by the chart being completely unable to display.

We attached the error message produced in DevTools, the expected outcome and the actual outcome when the error occurred.

Hi, I have an issue where I am trying to create multiple xAxes where one is normal and the rest are horizontally stacked. Then I calculate the stacked length of each stacked axes, but the issue comes when I change the width of the chart or inspect element, which would alter the width of the chart somehow, I got error saying the total width of the stacked axes is bigger than available size.

I have a codesanbox example of it:
https://codesandbox.io/s/scichart-stacked-xaxis-stacked-length-issue-3knt23?file=/src/App.tsx

I am using percentage for the stacked xAxes length and then I added them up to be 100% total, but somehow it is saying that it is more than available size.

So, my question is, how can I listen or get the width/size changes event of the chart/xAxis, so that I can calculate accordingly?

Hi all,

Today, I follow the Tutorial 01, but I can not set up the SciChart.js project,
I am sure that I do the same step like Tutorial,
some one can help me to realize the error messages?
Thanks a lot.

PS:error messages is attached file

Sincerely,

Alec

Hi,
the Tooltip from the rolloverModifier shows for the Open-Values the Label “Open”.

I would like to be able to change that. There might be serveral reasons for that. Maybe the shown data are not “openValues” or the word “open” needs to be translated into another language.

I managed to edit the title of a FastCandlestickRenderableSeries by setting a title and get it into the variable like this:

rolloverTitle = newtitle;
renderableSeries0.rolloverModifierProps.tooltipTitle = rolloverTitle;

unfortunately i did not find a way to set the name/label for the open-,low-,close-, or high-values of this Series.

Can someone give ma a hint how to do this?

Hello!

Tell me what I’m doing wrong?
Here’s the code

import { NumericAxis } from "scichart/Charting/Visuals/Axis/NumericAxis";
import { FastLineRenderableSeries } from "scichart/Charting/Visuals/RenderableSeries/FastLineRenderableSeries";
import { EllipsePointMarker } from "scichart/Charting/Visuals/PointMarkers/EllipsePointMarker";
import { RolloverModifier, TRolloverTooltipDataTemplate } from "scichart/Charting/ChartModifiers/RolloverModifier";
import { ZoomPanModifier } from "scichart/Charting/ChartModifiers/ZoomPanModifier";
import { ZoomExtentsModifier } from "scichart/Charting/ChartModifiers/ZoomExtentsModifier";
import { MouseWheelZoomModifier } from "scichart/Charting/ChartModifiers/MouseWheelZoomModifier";
import { SciChartSurface } from "scichart";
import { parseColorToUIntArgb } from "scichart/utils/parseColor";
import {  XyDataSeries } from "scichart/Charting/Model/XyDataSeries";
import { CategoryAxis } from "scichart/Charting/Visuals/Axis/CategoryAxis";
import { TextLabelProvider } from "scichart/Charting/Visuals/Axis/LabelProvider/TextLabelProvider";
import { Thickness } from "scichart/Core/Thickness";
import { ELabelAlignment } from "scichart/types/LabelAlignment";

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const divElementId = "scichart-root"
class MyMetadata {
    static create(title, previousValue, isSelected) {
      const md = new MyMetadata()
      md.title = title
      md.previousValue = previousValue ?? md.previousValue
      md.isSelected = isSelected ?? md.isSelected
      return md
    }
  isSelected = false
  palettedStrokeRed = parseColorToUIntArgb("red")
  palettedStrokeGreen = parseColorToUIntArgb("green")
  constructor() {}
}

const tooltipDataTemplateRS = seriesInfo => {
    const valuesWithLabels = []
    // Line Series
    const xySeriesInfo = seriesInfo
    if (seriesInfo.pointMetadata) {
      const testMd = seriesInfo.pointMetadata
      valuesWithLabels.push(
        testMd.title + " Previous: " + testMd.previousValue.toFixed(1)
      )
    }
    valuesWithLabels.push(
      "X: " + xySeriesInfo.formattedXValue + " Y: " + xySeriesInfo.formattedYValue
    )
    return valuesWithLabels
  }

const color = "#368BC1"
const drawExample = async () => {
  const { sciChartSurface, wasmContext } = await SciChartSurface.create(
    divElementId
  )
  const xAxis = new CategoryAxis(wasmContext);
  const labelProvider = new TextLabelProvider({
     // When passed as an array, labels will be used in order
     labels: dataData,
     maxLength: 188
 });
 xAxis.labelProvider = labelProvider;
 xAxis.labelStyle.alignment = ELabelAlignment.Center;
 xAxis.labelStyle.padding = new Thickness(2,1,2,1);
 xAxis.axisRenderer.hideOverlappingLabels = false;
 xAxis.axisRenderer.keepLabelsWithinAxis = false;    
  sciChartSurface.xAxes.add(xAxis)
  const yAxis = new NumericAxis(wasmContext)
  sciChartSurface.yAxes.add(yAxis)
  for (let seriesIndex = 0; seriesIndex < 5; seriesIndex++) {
    const firstSeriesData = createDataSeries(wasmContext, seriesIndex, {
      dataSeriesName: "Sinewave"+seriesIndex
    })
    const renderableSeries1 = new FastLineRenderableSeries(wasmContext, {
      stroke: color,
      strokeThickness: 3,
      dataSeries: firstSeriesData,
      pointMarker: new EllipsePointMarker(wasmContext, {
        width: 5,
        height: 5,
        strokeThickness: 2,
        fill: "white",
        stroke: color
      })
    })
    renderableSeries1.rolloverModifierProps.markerColor = color
    renderableSeries1.rolloverModifierProps.tooltipColor = color
    sciChartSurface.renderableSeries.add(renderableSeries1)
    renderableSeries1.rolloverModifierProps.tooltipDataTemplate = tooltipDataTemplateRS
  }
  sciChartSurface.chartModifiers.add(new RolloverModifier())
  sciChartSurface.chartModifiers.add(new ZoomPanModifier())
  sciChartSurface.chartModifiers.add(new ZoomExtentsModifier())
  sciChartSurface.chartModifiers.add(new MouseWheelZoomModifier())
  sciChartSurface.zoomExtents()
  return { sciChartSurface, wasmContext }
}
// Generate some data, including metadata
const createDataSeries = (wasmContext, index, options) => {
  const sigma = Math.pow(0.6, index)
  const dataSeries = new XyDataSeries(wasmContext, options)
  let prev = 0
  for (let i = 0; i < 188; i++) {
    const grow = 1 + i / 99
    const metadata =i > 0 ? MyMetadata.create("Metadata " + i.toString(), prev) : undefined
    const y = Math.sin((Math.PI * i) / 15) * grow * sigma
    // metadata is an optional parameter on all data manipulation methods on dataseries,
    // so it can also be added as an array eg dataSeries.appendRange(xValues, yValues, metadataArray);
    dataSeries.append(i+1, y, metadata)
    prev = y
  }
  return dataSeries
}
drawExample()

Hello,

I need to customize the text for some points on a XyScatterRenderableSeries graph. The problem is that the dataLabelProvider available for XyScatterRenderableSeries is BaseDataLabelProvider, but it doesn’t have a metaDataSelector method and I can’t do it with it. Interestingly, using LineSeriesDataLabelProvider I was able to add text for the points I needed using metadata, but another problem arose. In this case, if there is only one point on the graph, the text will not be drawn.

Here is a small example of how text is drawn for different numbers of points. https://codepen.io/PodaRocheK/pen/jOXYGMJ?editors=0011

Can you advise me on how to display text near points more correctly in the case when I use XyScatterRenderableSeries and often this text should disappear or appear near some points. Thanks a lot!

Hello,

I am experiencing an issue with the BoxAnnotation in SciChart where the precision of the box’s boundaries does not accurately match the data points it is supposed to represent. When dynamically creating a BoxAnnotation to highlight a range of values on a chart, the upper boundary (y2) is set to match the maximum value within the specified range. Despite the calculation seeming accurate, the rendered annotation’s top edge is visually lower than the top of the highest column it encompasses, creating a slight discrepancy. In my application, I am creating a lot of charts, and this issue occurs only on charts with a big data range.

Environment:

SciChart Version: 3.2.532
Browser: Chrome

Attaching code snippet on jsfiddle:
https://jsfiddle.net/c9dekx6v/2/

Regards,
Dmytro

The scichart y axis is displayed as undefined after updating the data in timed interval. The y axis initially shows the value,but after the data is appended to the source, the y axis is shown as undefined in the chart.

I have attached the final scichart image with yaxis as undefined.

Hi,
I’m trying to implement a market footprint with SciChart framework, I mean is possible create like a plugin for implement in the framework?
My idea was set body color of all the candles invisible and than for every candle set two volume series in horizontal like in the image.

Hi,

I am getting console error and page is crashing and reloading the page.

I am considering applying server-side licensing for my javerScript application.

In the document below, there is a phrase “Our server-side licensing component is written in C++.”
(https://support-dev.scichart.com/index.php?/Knowledgebase/Article/View/17256/42/)

However, there is only asp.net sample code on the provided github.
(https://github.com/ABTSoftware/SciChart.JS.Examples/tree/master/Sandbox/demo-dotnet-server-licensing)

I wonder if there is a sample code implemented in C++ for server-side licensing.

Can you provide c++ sample code?
Also, are there any examples to run on Ubuntu?

I have a real time updated chart and users can add annotation to the chart. The position of the annotation will be updated with the chart data. I would like to stop updating the annotation position while user dragging the annotation. So I added a flag (e.g. isDragging) to the annotation dragStarted and dragEnded events. The isDragging flag will be set to true in dragStarted and then set to false in dragEnded. I will check this flag before updating the annotation position.

Here’s the problem, the annotation dragStarted event will be triggered when users do panning in the chart. But the dragEnded will not be triggered in this case. It breaks my plan to stop updating the annotation position as the isDragging will be incorrect. Is it a bug that the annotation dragStarted event (but not the dragEnded event) triggered when panning?

Downloaded latest Licensing Wizard on my Mac M1 however I cannot run it to start my trial of SciChart.JS.

I’m looking at SciChart.JS for financial charting project in a .NET Blazor for analysis only.

As I’ve not been able to get SciChart installed or to try, is it possible to place annotations such as trend lines and boxes onto the chart by me clicking on the chart?

Also, how does indicators work? And can I add my own indicators? Will the algorithms for these indicators be written in JavaScript or can I do this in C# from Blazor?

I attach a screen shot of the problem running the Licensing Wizard.

Any suggestions would be helpful.

Thanks

I am getting the alert message on our application and now I got the same message on the https://demo.scichart.com/javascript-line-chart also. It’s not happening all the time. But it’s happening sometimes only on the application.

I’m looking on https://demo.scichart.com/javascript-multi-pane-stock-charts-sync-technique
I have a q react application. Can I add/remove subcharts(indicator panes) dynamically?

I have two charts in my app. Is there a way that I can make a rollover tooltip on a heatmap chart and the x visible range updates accordingly on another chart when the cursor moving around on the heatmap?

I had this function in Android version with the method InternalUpdate from CustomHeatmapTooltip which extended from UniformHeatmapTooltip. I wonder if there’s a listener for the tooltip.

Thanks.

I am using SciChartSurface.create() to create chart and it works well. However, I got the webGL memory issue randomly – WebGL memory issue. I am trying to apply a workaround to use SciChartSurface.createSinge() instead. The createSingle() function doesn’t work for me, the chart cannot be rendered.

const { sciChartSurface, wasmContext } = await SciChartSurface.createSinlge(`${chartId}-chart-root`, { theme: themeObj });

There is no error showing in the developer tool console. I have no idea what’s wrong.

Hi Scichart Team.

I am working on the MouseWheelZoomModifier (EActionType.Pan).
But my users are using a trackpad (apple magic trackpad).
Currently, they are using 2 fingers and move up or down (vertically) to pan the chart. But they are asked to pan the chart by using 2 fingers and move left or right (horizontally) instead.

Do we have any setting for MouseWheelZoomModifier that help me pan the chart by that way?

I have a React application showing a real time updated chart which works well when receives data from event-based WebSocket. Now I need to modify the app with a new data source. I have an aysnc function to get a batch of data in an interval.

kinesisReadInterval.current = setInterval(async () => {
        const recordsResponse = await kinesisRef.current.getRecords({ ShardIterator: shardIterator }).promise();
        recordsResponse.Records.forEach(record => {
            try {
                const dataObj = JSON.parse(record.Data.toString('utf-8'));
                spectrumAnalyzerRef.current.metaDataHandler(dataObj);
            } catch (jsonError) {
                spectrumAnalyzerRef.current.binaryDataHandler(record.Data.buffer);
            }
        });

        shardIterator = recordsResponse.NextShardIterator;

        if (!shardIterator || !kinesisConected.current) {
                clearInterval(intervalId); // Stop interval if conditions are not met
        }
    }, 1000);

The recordsResponse.Records contains a batch of records and I want to update the chart based on these records one by one. From my logs, I can see that the binaryDataHandler() which will call appendRange() ran successfully for each record. However, the chart only redraws for the last record of the recordsResponse.Records. I have tried to store the recordsResponse.Records in a state variable and loop to update the chart later, but still got the same result. I am not sure whether it’s chart related issue or React rendering issue. Do you have any idea?

Hi,

I am facing another issue with dataLabels in latest version of Scichart. I saw another question with similar is already posted and the fix is released.

Can you check this code.

I tried to reproduce the issue with the vue js example code, codesandbox. But the issues is behaving differently in example code, codesandbox, and my existing project.

codesandbox: https://codesandbox.io/s/scichart-error-6xc6jw?file=/src/index.ts
codesandbox:- Text in the bottom area are displayed and top area no labes are displayed.

I am attaching the vue js file also. Please check the file also, On the example no labels are displayed.

I am attaching the video of my project also, Here the labels are invisible sometimes, sometimes the labels are showing not properly. Video Link: https://drive.google.com/file/d/1vZ0lO5xdmN9VfFGXMaoTPfTgqRytrEAl/view?usp=sharing

Hello.

The graph is automatically stretched in width. How to do the same in height?

Video

The project is developed on SciChart JS.

The x axis is date time numeric and y axis is numeric.

There is a option for the user to select the x axis interval. The interval values are 5 Min, 10 Min, 15 Min, 30 Min, 1 Hour, 6 Hour, 12 Hour, Days, Weeks, Months & Years.

When the user the selects a interval in the select option, the x axis should be updated with the selected interval.

For Example, If the user selects the 5 Min in the select option, then the x axis interval should be 5 Min.

For 5 Min X Axis Interval

16-Jan-2023 07:00
16-Jan-2023 07:05
16-Jan-2023 07:10
16-Jan-2023 07:15
16-Jan-2023 07:20
16-Jan-2023 07:25
16-Jan-2023 07:30

For 1 Hour X Axis Interval

16-Jan-2023 07:00
16-Jan-2023 08:00
16-Jan-2023 09:00
16-Jan-2023 10:00
16-Jan-2023 11:00
16-Jan-2023 12:00
16-Jan-2023 13:00
16-Jan-2023 14:00

So let me know how to change the interval in the x axis (date time numeric) based on the selection.

I have attached the zip file which contains the HTML file.

Hi,

In my application I am using two charts for represent different values. I am using LegendModifier on the first chart. Is it possible when i uncheck the series on first chart and the same color series on second chart also need to hide from the second chart. Any event callback function available in LegendModifier ?

A client responded that the line diagram drawn by scient.js on the mobile phone could not be seen.
We follow the user’s log and find that there is such content

2022/09/21 07:02:27.981 exception thrown: RuntimeError: function signature mismatch,RuntimeError: function signature mismatch
            at <anonymous>:wasm-function[2101]:0x5fc72
            at <anonymous>:wasm-function[1355]:0x2a029
            at <anonymous>:wasm-function[2409]:0x7ef3a
            at Ch (<anonymous>:wasm-function[4028]:0x12f27f)
            at r._main (<anonymous>:16:687711)
            at Object.Ma [as callMain] (<anonymous>:16:688823)
            at <anonymous>:16:565075

2022/09/21 07:02:27.981 Could not load SciChart WebAssembly module.
            Check your build process and ensure that your scichart2d.wasm, scichart2d.data and scichart2d.js files are from the same version

.
We try to reproduce many different devices. At present, it seems that only the device will happen. The following is the information of the device