search for: d13n

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2012 Sep 03
1
Scatter plot from tapply output, labels of data
...to plot the means of two variables (d13C and d15N), by 2 grouping factors (Species and Year) that i obtained by the function tapply. I would like to plot with different colours according to the Year and show the "Species" as data labels. My data looks like this: Species d13C d13N Year "Species1" 14,4 11.5 2009 "Species2" ... ... .... >Nmean<-tapply(d15N,list(Year,Species),mean) >Cmean<-tapply(d13C,list(Year,Species),mean) ##works fine, returns something like this Species1 Species2...