Hi all, I am new to SAS and I find myself needing your help for the first time, so apologies in advance for any mistakes. I have a dataset containing the variables 'Price' and 'Time' for every transaction executed in a given period for a stock. I need to subset this dataset by only selecting the observations for which the cumulative price change is greater than a constant amount 'c'. So that: >the first observation of the new dataset is the same as the original >then, we select only observations for which the absolute difference between Price(i) and the previously selected Price(i)* is greater than or equal to a constant c, say 0.25. I am using SAS University Edition.
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