On Jul 12, 2011, at 8:42 AM, anglor wrote:
Hi,
I have a data frame of about 700 000 rows which look something like
this:
Date Temperature Category
2007102 16 A
2007102 17 B
2007102 18 C
but need it to be:
Date TemperatureA TemperatureB TemperatureC
2007102 16 17 18
> reshape(dat, idvar="Date", timevar="Category", direction="wide")
Date Temperature.A Temperature.B Temperature.C
1 2007102 16 17 18
Any suggestions?
/Angelica
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