search for: caiv

I am trying to use the function CAIV from the package CoCoAn I have a matrix with dimension 43x67 with positive values >=0 When I use CAIV, I get the error: "Error : column total=0" Does someone know why? Thanks Celine -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -...

Hi R-users, I am new to R environment.I want to carry out a correspondence analysis on a contigency table with 64 columns and 298 observation of Environmental data.In many cells of the contigency table the frequency is just the value '1'. I got the following error. > CAIV(Eplankton) Error in if (L[i, j] < 0) return("Table L must contain non-negative numbers") : missing value where logical needed In addition: Warning message: "<" not meaningful for factors in:Ops.factor(L[i,j],0) Any suggestion on what went wrong. Thanks in adva...

Hello, I am looking for a workaround of "species empty" plots in a correspondence analysis. I tried to do a community structure analysis with a ca via decorana(), ca() and CAIV(), but none of them allow 0 only-rows. I have species (abs./pres) in columns and sites in rows sp1 sp1 sp3 ... plot1 0 1 1 plot2 0 0 0 plot3 1 0 1 ..... but on some plots no species could be found, therefore only 0 appear. I know that this isn't interesting for a...

...n gratefully received :) Regarding myself, I try to get done as much I can writing my own R functions including the calls to some of the many R graphic functions. Actually, I normally do it at 2 levels. First, I try to write general (in the sense of my own work) functions. For example, a personal CAIV.plot function or personal functions for displaying results of discriminant analysis. Second, I use to write an specific function for each figure that I want to include in a paper or presentation. In that way it is (relatively) easy to include suggestions that come (usually several months later) fr...