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I have a data set of sales data by day. Unfortunately the names of the columns represent the dates. In order to work with the data, I need to transform the data set so each day represents an observation.The data set looks something like this:store _010_05_01 _010_05_02 _010_05_03 ….1 8 5 62 6 9 33 7 9 8….As you can see, I
| This post was kindly contributed by Data Steps - go there to comment and to read the full post. |