search for: copepod

Displaying 2 results from an estimated 2 matches for "copepod".

2012 Feb 10
2
apply pairs function to multiple columns in a data frame
...h a complete novice! I am working with a large multivariate data set that has 10 explanatory environmental variables (e.g. temp, depth) and over 60 response variables (each is a separate species). My data frame is set up like the simplified version below: JulianDay Temperature Salinity Depth Copepod Barnacle Gastropod Bivalve 222 12.1 33 0.3 500 756 0 178 222 12.3 33.2 1.1 145 111 0 0 223 11.1...
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(),h...