Displaying 4 results from an estimated 4 matches for "bryceveg".
2007 Jun 20
1
How to extract diagonals
Hello,
I am using Mac OS X on a power book and R 2.5.0
I try to extract a diagonal from a dissimilarity matrix made with
dsvdis, with this code:
diag(DiTestRR)
But I get this error message:
Fehler in array(0, c(n, p)) : 'dim' spezifiziert ein zu großes Array
english:
Error in array(0, c(n, p)) : 'dim' specifies a too big array.
Is there a limit to extract diagonals?
I
2010 Apr 02
2
Biplot for PCA using labdsv package
Hi everyone,
I am doing PCA with labdsv package. I was trying to create a biplot graphs
in order to observe arrows related to my variables. However when I run the
script for this graph, the console just keep saying:
*Error in nrow(y) : element 1 is empty;
the part of the args list of 'dim' being evaluated was:
(x)*
could please someone tell me what this means? what i am doing
2007 Nov 16
4
Permutation of a distance matrix
Hi there,
I would like to find a more efficient way of permuting the rows and columns of a symmetrical matrix that represents ecological or actual distances between objects in space. The permutation is of the type used in a Mantel test.
Specifically, the permutation has to accomplish something like this:
Original matrix addresses:
a11 a12 a13
a21 a22 a23
a31 a32 a33
Example
2011 Oct 03
4
distance coefficient for amatrix with ngative valus
Hi,
I need to run a PCoA (PCO) for a data set wich has both positive and negative values for variables. I could not find any distancecoefficient other than euclidean distace running for the data set. Are there any other coefficient works with negtive values.Also I cannot get summary out put (the eigen values) for PCO as for PCA.
Thanks.
Dilshan
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