Re: [R] time-series aggregation of information

Hi, May be this helps: dat<- read.table(text=" Date,Parameter,Weight 2012-01-31,90,200 2012-01-31,80,400 2012-01-31,70,500 2012-01-31,60,800 2012-02-29,120,220 2012-02-29,110,410 2012-02-29,75,520 2012-02-29,65,840 2012-03-31,115,210 2012-03-31,100,405 2012-03-31,70,500 2012-03-31,60,800 ",sep=",",

Re: [R] time-series aggregation of information

On May 17, 2013, at 11:48 AM, Chirag Maru wrote: > I have following data for which I need to calculate the weighted aggregate > value of the parameter at each time. > > Date,Parameter,Weight > 2012-01-31,90,200 > 2012-01-31,80,400 > 2012-01-31,70,500 > 2012-01-31,60,800 > 2012-02-29,120,220 > 2