Polynomial Trendline of order two fails

Aspose.Slides Product Family
1

When I generate a chart with a polynomial trendline, if the order of the trendline is set to 2, the exported pptx fails to open. If I increase the order of the trendline to 3, the exported pptx works as expected.


Based on code from here Trend Line|Aspose.Slides Documentation

I have this sample code running in a console application
//Creating empty presentation//Creating empty presentation

Presentation pres = new Presentation();


        <span style="color:#57a64a;">//Creating a clustered column chart</span>
        <span style="color:#b8d7a3;">IChart</span> chart <span style="color:#b4b4b4;">=</span> pres<span style="color:#b4b4b4;">.</span>Slides[<span style="color:#b5cea8;">0</span>]<span style="color:#b4b4b4;">.</span>Shapes<span style="color:#b4b4b4;">.</span>AddChart(<span style="color:#b8d7a3;">ChartType</span><span style="color:#b4b4b4;">.</span>ClusteredColumn, <span style="color:#b5cea8;">20</span>, <span style="color:#b5cea8;">20</span>, <span style="color:#b5cea8;">500</span>, <span style="color:#b5cea8;">400</span>);

        
        <span style="color:#57a64a;">//Adding Polynomial trend line for chart series 3</span>
        <span style="color:#b8d7a3;">ITrendline</span> trendlinePolynomial <span style="color:#b4b4b4;">=</span> chart<span style="color:#b4b4b4;">.</span>ChartData<span style="color:#b4b4b4;">.</span>Series[<span style="color:#b5cea8;">2</span>]<span style="color:#b4b4b4;">.</span>TrendLines<span style="color:#b4b4b4;">.</span>Add(<span style="color:#b8d7a3;">TrendlineType</span><span style="color:#b4b4b4;">.</span>Polynomial);
        trendlinePolynomial<span style="color:#b4b4b4;">.</span>TrendlineType <span style="color:#b4b4b4;">=</span> <span style="color:#b8d7a3;">TrendlineType</span><span style="color:#b4b4b4;">.</span>Polynomial;
        trendlinePolynomial<span style="color:#b4b4b4;">.</span>Forward <span style="color:#b4b4b4;">=</span> <span style="color:#b5cea8;">1</span>;
        trendlinePolynomial<span style="color:#b4b4b4;">.</span>Order <span style="color:#b4b4b4;">=</span> <span style="color:#b5cea8;">3</span>; <span style="color:#57a64a;">// <--- if this is set to 2, the exported chart fails to load.</span>
        trendlinePolynomial<span style="color:#b4b4b4;">.</span>DisplayRSquaredValue <span style="color:#b4b4b4;">=</span> <span style="color:#569cd6;">true</span>;
        trendlinePolynomial<span style="color:#b4b4b4;">.</span>DisplayEquation <span style="color:#b4b4b4;">=</span> <span style="color:#569cd6;">true</span>;


        <span style="color:#57a64a;">//Saving presentation</span>
        pres<span style="color:#b4b4b4;">.</span>Save(<span style="color:#d69d85;">"ChartTrendLines.pptx"</span>, <span style="color:#b8d7a3;">SaveFormat</span><span style="color:#b4b4b4;">.</span>Pptx);</pre></div><div><br></div><div>If the trendlinePolynomial.Order property is set to 2, the ChartTrendLines.pptx fails to open. </div><div>Is this the expected behaviour, or is it a bug?</div><div>If it is a bug, are there workarounds available, or an expected timeframe for a fix? (Though I'm not holding my breath on that last one.)</div><div><br></div><div>  N</div><div><br></div><div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><br></div></blockquote></div><div><br></div>
2

Hi,

Thank you for sharing the sample code.

I am able to reproduce your mentioned issue after an initial test. Your issue has been registered in our issue tracking system with issue id: SLIDESNET-35914. The development team will further investigate the issue and share their feedback once the issue gets scheduled at it’s due turn. We will notify you via this forum thread once the issue gets resolved.

Thanks & Regards,

3

The issues you have found earlier (filed as SLIDESNET-35914) have been fixed in this update.

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