Gridlines not showing in 2D Heatmap

Hi Sebastian,

I’ve tried to reproduce this issue on our side, but couldn’t. The only thing I’ve found out is that having AxisBands switched on may cause black background where vertical bands and horizontal bands intersect.

However, turning off AxisBands and setting a white background to GridLinesPanel helped to resolve this issue. Please refer to the attached screenshot.

        <s:SciChartSurface>

        <s:SciChartSurface.GridLinesPanelStyle>
            <Style TargetType="s:GridLinesPanel">
                <Setter Property="Background" Value="White"/>
            </Style>
        </s:SciChartSurface.GridLinesPanelStyle>

        <s:SciChartSurface.XAxis>
            <s:NumericAxis ... DrawMajorBands="False" />
        </s:SciChartSurface.XAxis>

        <s:SciChartSurface.YAxis>
            <s:NumericAxis ... DrawMajorBands="False" />
        </s:SciChartSurface.YAxis>

        <s:SciChartSurface.RenderableSeries>
            <s:FastHeatMapRenderableSeries ... Opacity="0.8">
            </s:FastHeatMapRenderableSeries>
        </s:SciChartSurface.RenderableSeries>
    </s:SciChartSurface>

You can try this out in the “HeatMap with Text” example.

Please let us know if applying these changes works for you as well. If not, may I ask you to send us a small sample which reproduces the issue for investigation?

Best regards,
Yuriy

Yuriy,

Thanks for the reply. I tried what you suggested but I keep getting the black background. I’m pretty sure I’m doing something wrong.

I attach a small working sample.

I am using v4.0.5.8246

Thanks again,
Sebastian

I still haven’t been able to solve this issue.

Please I’m pending on an answer based on the sample I provided.

Do I need to go through a support ticket for this?

Thank you.
Sebastian

Hello,

I have tried again the changes Yuriy suggested, using the sample “Heatmap with Text”. In order to get NaN, I added a line of code to the data filling that if index y == x just add double.NaN to the position.

I am not getting the same result as Yuriy’s image (I attach an image showing this).

I see either three reasons to why this is the case:

1) Yuriy changed something else that wasn’t notified in the answer (something other than turning off bands and setting GridLinePanel background to white).

2) You are using a different DLL version than the latest stable release that has corrected this behavior.

Please advise.

Thank you very much.

Regards,
Sebastian

Yuriy,

I was just about to post a new answer.

I believe the issue is in version v4.0.5. During the weekend I tested the Nightly Build and got the results you showed on the image in the SciChart sample.

Unfortunately, I’m not able to download from NuGet within my company, reason why I didn’t tried the latest DLLs sooner.

I’m pending on testing the latest DLLs on my actual project but I feel confident that the issue will be solved. Once I find how to get those without using Nuget or having to download them from myget.com I’ll test them ASAP and close this thread.

Thanks again,
Best regards,
Sebastian