R/dayOfYear.R
In sirad: Functions for Calculating Daily Solar Radiation and Evapotranspiration

dayOfYear <-
  function(dat) {       
    i <- as.numeric(format(as.Date(dat,origin="1970-01-01"),'%j')) 
    i
  }

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sirad documentation built on May 2, 2019, 4:41 p.m.

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