Deleting duplicate observations from a dataset
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Sebastiano delre
2016 年 5 月 30 日
回答済み: Sebastiano delre
2016 年 5 月 31 日
I have a large dataset and I want to delete duplicate observations. I do not want to use the function unique because it compares all values of the variables and it is slow. I just want to use the variable PostID of the observations and delete duplicates. I attach a fraction of the dataset. Thank you for your help.
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