search for: copepods

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2012 Feb 10
2
apply pairs function to multiple columns in a data frame
...od, and Bivalve are the column headers. I am using the pairs function in R to explore my data. My data frame is named Sunset. Using this code: Z=cbind(Sunset$Copepod,Sunset[,c(1:10)]) #the first 10 columns of my data frame are explanatory variables such as temp Pairs.Copepod=pairs(Z,main="Copepods vs. explanatory variables", panel=panel.smooth) I get a great pair plot of Copepods vs. all of the 10 explanatory environmental variables. I would like to do this for each of my 60+ species. I can't just make one big pair plot of all of my explanatory variables vs. all of my species bec...
2009 May 15
1
help on Nan error
...rom each of 2 natural 'treatments' (either disturbed "D" or undisturbed "U" by soldier crab burrowing activity. The abundances of each of *p *= 56 species were recorded from each core (variables 1 to 39 in the file are nematode worms and variables 40-56 in the file are copepods, as identified by the column headed "Taxon"). Note that the *rows *are the species and the *columns *are the scores (sample units) in the raw data file. When i want to do ANOSIM i get an NaN error message. What is wrong? R output is here under > tasmania.df=read.table(file.choose(),he...