The Chart Thumbnail and the Chart on the PowerPoint Presentation Do Not Match

Aspose.Slides Product Family
, ,
1

Hi!

I need to get an image from a slide, but I noticed that if the chart uses secondary axes, then the part of the chart that belongs to the secondary axis moves out - as if ignoring the specified minimum value of the axis.

Example:

var pres = new Presentation();
var pptChart = pres.Slides[0].Slide.Shapes.AddChart(ChartType.Line, 0, 0, 700, 300);

pptChart.ChartData.Series.Clear();
pptChart.ChartData.Categories.Clear();

var barSeries = pptChart.ChartData.Series.Add("Bar", ChartType.ClusteredColumn);
barSeries.DataPoints.DataSourceTypeForValues = DataSourceType.DoubleLiterals;
barSeries.DataPoints.AddDataPointForBarSeries(4250);
barSeries.DataPoints.AddDataPointForBarSeries(3300);
pptChart.ChartData.Categories.Add(1);
pptChart.ChartData.Categories.Add(2);

var series = pptChart.ChartData.Series.Add("Example 1", ChartType.ScatterWithStraightLines);
series.PlotOnSecondAxis = true;
series.DataPoints.DataSourceTypeForXValues = DataSourceType.DoubleLiterals;
series.DataPoints.DataSourceTypeForYValues = DataSourceType.DoubleLiterals;
series.DataPoints.AddDataPointForScatterSeries(0.5, 3500);
series.DataPoints.AddDataPointForScatterSeries(1.5, 3500);

pptChart.Axes.SecondaryHorizontalAxis.MinorGridLinesFormat.Line.FillFormat.FillType = FillType.NoFill;
pptChart.Axes.SecondaryHorizontalAxis.MajorGridLinesFormat.Line.FillFormat.FillType = FillType.NoFill;
pptChart.Axes.SecondaryVerticalAxis.MinorGridLinesFormat.Line.FillFormat.FillType = FillType.NoFill;
pptChart.Axes.SecondaryVerticalAxis.MajorGridLinesFormat.Line.FillFormat.FillType = FillType.NoFill;

pptChart.Axes.SecondaryHorizontalAxis.IsAutomaticMaxValue = false;
pptChart.Axes.SecondaryHorizontalAxis.IsAutomaticMinValue = false;
pptChart.Axes.SecondaryHorizontalAxis.MaxValue = pptChart.ChartData.Categories.Count;
pptChart.Axes.SecondaryHorizontalAxis.MinValue = 0;

pptChart.Axes.SecondaryHorizontalAxis.IsVisible = false;
pptChart.Axes.SecondaryVerticalAxis.IsVisible = false;

using var bitmap = pres.Slides[0].GetThumbnail(5f, 5f);
bitmap.Save("TEST_IMAGE.jpeg", ImageFormat.Jpeg);

Image result: TEST_IMAGE.jpeg (140.0 KB)
Presentation result: Test chart.7z (31.0 KB)
Compare: example.png (46.8 KB)

Thanks!

2

@ikyrieieva,
Thank you for reporting on the issue.

I reproduced the problem when converting the presentation slide to an image.

We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): SLIDESNET-43971

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.