auto_xy_Add creates a new dataset from the sum of the y-coordinates of 2D datasets.
hDataNew is the handle of the new dataset.
hData is the handle of a 2D dataset. The new dataset, hDataNew, will be added to the layer (diagram) where the dataset hData is located.
hData_Layer is a vector with two elements. The first element is a handle of a 2D dataset and the second element is a handle of a layer (diagram) to which the new dataset should be added.
hvData is a vector of handles of 2D Datasets.
The x-coordinates of all given datasets must be strictly increasing. They do not have to be identical.
The new dataset is calculated as following: