search for: postoff_1_1

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2011 Jan 20
4
How to reshape wide format data.frame to long format?
...to a 3 x 2501 data.frame where the "key" variable is kept, the values in columns 2-61 above is inserted into a "values" column and the name of the column is inserted in a third column ("variable" perhaps). Like key variable value POSTOFF_1_1 AMR.pa1.M 5 POSTOFF_1_1 AMR.pa2.M 3 .... I think I should be able to do this using the "reshape" function, but I cannot get it to work. I think I need some help to understand this... (If I could split the "variable" into three separate columns splitting by &...