swift - How to insert a symbol at previous index for CorePlot real-time plotting? -


as title, want insert symbol @ previous index real-time plotting image below.

i have computation in order location of peak value symbol index(e.g. index = 1) , real-time scatter index (e.g. idx = 5) not same.

how add symbol in previous index?

please me, thanks!!

enter image description here

use plot's -insertdataatindex:numberofrecords: method add data. starting index can between 0 (to add data before of existing data) , number of existing data points (to add data @ end). if add new points before existing ones, existing ones shifted on make room. keep in mind if reload plot data after inserting new points—the indices of old points change.


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