Parameters
A number representing the data ID of the added data set. This will generally match the input data ID, but is not guaranteed. If this number is negative, the data set was not created and likely the old data ID is invalid. Use the data ID for any further function calls to alter the data set.
Description
This function changes an existing data set in a chart. The data is converted to double-precision floating point for internal storage, but this function handles any type of input data.
For details on data sets, see CChartData::SetData.