Hello
I am developping zooming on xyscatter plot. As you know, there are 5 different scatter plot types(I will call scatter plot group) (scatter - -4169, scatter with line - 74 , scatter with line and no data markers - 75 , scatter with smooth - 72 , scatter with smooth and no data markers - 73)
Zooming will work for all type of scatter plot but no other plot. If there is only one plot, it is not difficult to check that plot belong to scatter plot group (check each type) but when there are muliti plots with even one type of scatter plot group, I have got unexpected ChartType which is like -4111 which does not exist in Excel.

Could you help me how Excel determine the ChartType when there are multiple charts?
Is there any way to identify all plots belong to scatter plot group?
Even is there any easy way to identify one plot belongs to the scatter plot group?
Thanks for your help in advance