Dear Aspose team!
We have stumbled upon an inconsistency in how thumbnail and pptx gets generated for a specific case.
What we do is the following:
We have a template with a X Y Scatter chart which is backed with an Excel workbook. In our application we modify the Excel data with new values and labels. When generating a thumbnail image from the presentation we get different labels in our chart when looking at the thumbnail compared to the generated PPTX (the thumbnail contains labels from our base template and the PPTX gets the correct labels set by our code). If we save the presentation first and then use the saved PPTX to generate a thumbnail it looks as expected.
We have attached a code example that highlights this behavior. The code generates 3 files:
- thumbnail_before_save.png (Shows the incorrect labels)
- result.pptx (Has the expected labels)
- thumbnail_after_save.png (Also has the expected labels)
AsposeTest.zip (38.0 KB)
Thanks in advance!