SciChart® the market leader in Fast WPF Charts, WPF 3D Charts, iOS Chart, Android Chart and JavaScript Chart Components

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0 answers
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Hello I have been having a difficult time getting the correct time displayed on my xAxis and labels.

Passing in an xValue to an OHLC data series of 60 and the setting cursorLabelFormat: ENumericFormat.Date_DDMMHHMM this should produce a label “01/01 00:01” With the year as 1970.

When the computers timezone is set to UTC + 0 this behaves as expected.

However when the computers timezone is set to anything negative (UTC – 7) the label is formatted as “31/12 00:01” with the year 1969. If scichart is trying to convert to local time I would expect a reading of “31/12 17:01” 1969.

And when the timezone is set to anything positive (UTC + 7) the label is formatted as it is UTC +0 “01/01 00:01” 1970 again I would expect the hour to corrispond to the UTC offset if scichart is trying to convert to local time.

Looking at the later case I would assume that no time conversion is taking place which is what I would prefer. But looking at the former case (UTC -X) there appears to be some manipulation happening somewhere, I just have not been able to find any documentation explaining this. Am I missing something to get this to work properly out of the box without a custom label provider?

Thank you,

0 votes
91 views

Hello,

I am attempting to get SciChart working in a Blazor Server app.

I have followed the examples here:
https://github.com/ABTSoftware/SciChart.JS.Examples/tree/master/Sandbox/demo-browser-global-module
https://github.com/ABTSoftware/SciChart.JS.Examples/blob/master/Tutorials/2D_Browser_CDN_Tutorials_JavaScript/Tutorial_2_Adding_Series_and_data/index.html
https://www.scichart.com/documentation/js/current/webframe.html#Deploying%20Wasm%20or%20WebAssembly%20and%20Data%20Files%20with%20your%20app.html
https://cdn.jsdelivr.net/npm/scichart@2.2.2393/README.md

I have the following line in my “_Layout.cshtml” file in the head section:

<script src="https://cdn.jsdelivr.net/npm/scichart@2.1.2290/_wasm/scichart.browser.js" crossorigin="anonymous"></script>

In my scichart js I have:

export async function initSciChart() {
    SciChart.SciChartSurface.setRuntimeLicenseKey("....");
    SciChart.SciChartSurface.useWasmFromCDN();
}

However when I call this over JSInterop i get the following error:

Error: Microsoft.JSInterop.JSException: SciChart.SciChartSurface.useWasmFromCDN is not a function
TypeError: SciChart.SciChartSurface.useWasmFromCDN is not a function
at Module.initSciChart (https://localhost:7195/Pages/Strategy/StrategyMain.razor.js:33:30)
at https://localhost:7195/_framework/blazor.server.js:1:3501
at new Promise ()
at kt.beginInvokeJSFromDotNet (https://localhost:7195/_framework/blazor.server.js:1:3475)
at https://localhost:7195/_framework/blazor.server.js:1:72001
at Array.forEach ()
at kt._invokeClientMethod (https://localhost:7195/_framework/blazor.server.js:1:71987)
at kt._processIncomingData (https://localhost:7195/_framework/blazor.server.js:1:70029)
at connection.onreceive (https://localhost:7195/_framework/blazor.server.js:1:64432)
at o.onmessage (https://localhost:7195/_framework/blazor.server.js:1:48766)
at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args)
at Microsoft.JSInterop.JSObjectReferenceExtensions.InvokeVoidAsync(IJSObjectReference jsObjectReference, String identifier, Object[] args)
at TradeLogicBS.Web.Pages.Strategy.StrategyMain.OnAfterRenderAsync(Boolean firstRender) in D:\Repos\TradeLogicBS\TradeLogicBS\TradeLogicBS.Web\Pages\Strategy\StrategyMain.razor:line 63
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

How do we set this up properly to access the scichart modules in a blazor server application?

Thank you,

  • Leland asked 2 weeks ago
  • last active 7 hours ago
0 votes
460 views
  1. Big Sur 11.6.
  2. Monterey 12.2.1
  3. Catalina 10.15.7 (late 2013 model)
    ![enter image description here][1]

sciChart version 1.4.1611

If you open the chart in the Firefox browser, then, strangely enough, everything works.

Is it related to the version of the library?

0 votes
841 views

Hello, I just started evaluating JS 2D chart library and am running into an error (below) and don’t know what I should do to continue forward:

Error:

wasm streaming compile failed: TypeError: Failed to execute ‘compile’ on ‘WebAssembly’: Incorrect response MIME type. Expected ‘application/wasm’.

falling back to ArrayBuffer instantiation

failed to asynchronously prepare wasm: CompileError: WebAssembly.instantiate(): expected magic word 00 61 73 6d, found 3c 21 44 4f @+0

CompileError: WebAssembly.instantiate(): expected magic word 00 61 73 6d, found 3c 21 44 4f @+0

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

Uncaught (in promise) 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


I am copying the scichart2d.data and scichart2d.wasm in my webpack config as follows (according to your tutorials):

config.plugins.push(
    new CopyPlugin({
        patterns: [
            // {
            //     from: 'src/index.html',
            //     to: '',
            // },
            {
                from: 'node_modules/scichart/_wasm/scichart2d.data',
                to: '',
            },
            {
                from: 'node_modules/scichart/_wasm/scichart2d.wasm',
                to: '',
            },
        ],
    })

I have since then done the following but to no avail:

  1. Restart my webpack-dev-server -> In chrome, “Empty cache and refresh”
  2. Delete my node_modules folder -> yarn install -> yarn start

Can someone please help me with this issue at an earliest convenience.

0 votes
2k views

I’ve been trying to implement the scichart js blazor wrapper in a serverside application. The chart starts to load, but gives the following error:
Failed to load resource: the server responded with a status of 404 () :5001/scichart2d.data:1

it looks like scichart2d.data is in the wrong place, but as far as I can tell it’s where it should be (in wwwroot).

is there something special I need to do in sever side? I can get it working fine in webAssembly Blazor

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