Hi Gaurang,
I have observed the requirements shared by you and like to share that you can add the specific chart series or categories using Aspose.Slides. Please try using the following sample code on your end to serve the purpose.
PresentationEx pres= new PresentationEx(“D:\Aspose Data\Presentation1NoTemplate.pptx”) ;
SlideEx slide= pres.getSlides().get_Item(1);
ChartEx chart=(ChartEx) slide.getShapes().get_Item(0);
ChartSeriesExCollection seriesExCol = chart.getChartData().getSeries();
Iterator<?> itr = seriesExCol.iterator();
//Removes the first series
seriesExCol.remove(chart.getChartData().getSeries().get_Item(0));
//Remove the series at index 1 (2nd series)
seriesExCol.removeAt(1);
//Remove the firsy categpry
chart.getChartData().getCategories().remove(chart.getChartData().getCategories().get_Item(0));
//Remove the categpry at index 1 (2nd category)
chart.getChartData().getCategories().removeAt(1);
Also, you can add new chart series and categories. Please visit
this documentation link for your kind reference in this regard. Please share, if I may help you further in this regard.
Many Thanks,