search for: bocu

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2010 Mar 16
1
nested looping functions and dataframes
...;-i; c$Location<-j return(c) } Where, x is a dataframe that looks like the following: > head(x,n=20) Year Location Species 66 1998 PIPE_7 ACMI2 67 1998 PIPE_7 AMAR2 68 1998 PIPE_7 AMCA6 69 1998 PIPE_7 ANCY 70 1998 PIPE_7 ASVE 71 1998 PIPE_7 BOCU 72 1998 PIPE_7 CIFL 73 1998 PIPE_7 DAPU5 74 1998 PIPE_7 DICHANTHEL 75 1998 PIPE_7 GABO2 76 1998 PIPE_7 HEHE5 77 1998 PIPE_7 LIAS 78 1998 PIPE_7 LIPY 79 1998 PIPE_7 PAVI2 80 1998 PIPE_7 PHPI 81 1998 PIPE_7 PHVI5 82 1998 PIPE_7...
2010 Mar 10
2
function to create multiple matrices
Hi All, If given a dataframe (long form) with Year, Species, and Location, How would I write a function that would create a unique matrix of Species & Location for each Year? What I've tried doing is the following: data #dataframe dataT<-table(data$Species,data$Location,data$Year) #creates tables of Species vs Location for each Year But I'm encountering issues individually