Dear all, I have a lot of problems on R-programming. for example my csv. file is .. Date wrfRH wrfsolar wrfwindspeed wrfrain wrftd wrfta 21/10/2010 92.97 22.11 53.27 0 1546.337861 61.00852664 22/10/2010 87.35 21.99 40.89 0 1300.408288 62.85352227 23/10/2010 88.38 21.71 28.04 0.01 1381.768284 54.80594493 24/10/2010 92.32 15.45 22.38 0.51 1113.90981 39.46573663 25/10/2010 93.42 21.59 35.5 0.52 868.4895334 28.42952321 26/10/2010 93.38 20.15 42.58 0.07 1404.722837 40.29300856 i calculate the ratio of wrfRH/wrfsolar for each day.
that is Date wrfRH wrfsolar wrfwindspeed wrfrain wrftd wrfta ratio 21/10/2010 92.97 22.11 53.27 0 1546.337861 61.00852664 XXXX 22/10/2010 87.35 21.99 40.89 0 1300.408288 62.85352227 YYYY 23/10/2010 88.38 21.71 28.04 0.01 1381.768284 54.80594493 ZZZZ 24/10/2010 92.32 15.45 22.38 0.51 1113.90981 39.46573663 AAAA 25/10/2010 93.42 21.59 35.5 0.52 868.4895334 28.42952321 BBBB 26/10/2010 93.38 20.15 42.58 0.07 1404.722837 40.29300856 CCCC how to add new column in the original file ? Anyone can help me?! -- View this message in context: http://r.789695.n4.nabble.com/Adding-a-column-into-the-file-tp4632093.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
