Yeray, thank you for the reply. Yes, the images are very different as the waterfall-desired.jpg is from Internet searching. The waterfall3d.jpg is created by me, using data that is not real and only has three series to show clearly the un-wanted shading under the series. The data that I want to disp...

As showing in the attachment waterfall3d.jpg created in c++ with TeeChart, the area under the series are painted. long id = ptChart->AddSeries(tchartNS::scWaterfall); tchartNS::ISeriesPtr ser = ptChart->Series(id); ser->Pen->Visible = false; ser->asWaterfall->UsePalette = false; ser->asWaterfall->Wa...