If there is no loss in the data row, Winloss sparkline is not printing.
Thank you for contacting support.
Please provide the sample spreadsheet to replicate this issue, so we could move forward to fix it for you.
Looking forward to your kind response.
Source spreadsheet attached
Thank you for providing the sample spreadsheet.
We are able to observe the problem of missing Win/Loss Sparklines for cells H4 and H8 when rendered to PDF format using latest version of Aspose.Cells for .NET 7.7.2. A ticket (CELLSNET-42383) has been logged in our bug tracking system to investigate the matter in detail. We will keep you posted with updates in this regard.
book.Save(myDir + "output.pdf", SaveFormat.Pdf);