search for: uppertriangl

Displaying 4 results from an estimated 4 matches for "uppertriangl".

Did you mean: uppertriangle
2007 Apr 23
1
how to convert the lower triangle of a matrix to a symmetricmatrix
Sorry if this answer was already given, or if I miss the point, but did you have a look to "lowerTriangle" and "upperTriangle" functions in the "gdata" package ? # example # A<-matrix(rnorm(9),3,3) # B<-B<-matrix(NA,dim(A)[1],dim(A)[2]) # lowerTriangle(B)<-lowerTriangle(A) # upperTriangle(B)<-lowerTriangle(A) # diag(B)<-diag(A) Hope this helps, sorry if it was already answered. Olivier...
2007 Oct 10
3
as.dist with diagonal unequal zero
.... I tried with as.dist w<-as.dist(w, diag = TRUE) > w 1 2 3 4 5 1 0 2 2 0 3 3 8 0 4 4 9 14 0 5 5 10 15 20 0 but found no way to keep the diagonal that is in the matrix. I also tried this but as I expected it makes no difference: w<-matrix(1:25, ncol=5, nrow=5) > upperTriangle(w)<-NA > w [,1] [,2] [,3] [,4] [,5] [1,] 1 NA NA NA NA [2,] 2 7 NA NA NA [3,] 3 8 13 NA NA [4,] 4 9 14 19 NA [5,] 5 10 15 20 25 > w<-as.dist(w, diag = TRUE) > w 1 2 3 4 5 1 0 2 2 0 3 3 8 0 4 4 9 14 0...
2005 Dec 13
0
Updated version of gdata, gtools, gplots and gmodels
...39;s suggestion) - Updated Greg and Jim's email adresses - ll.R: Suppressed warning message in attach() call. - frameApply.Rd, reorder.Rd: Remove explicit loading of gtools in examples, so that failure to import functions from gtools gets properly caught by running the examples. - upperTriangle.R, man/upperTriangle.Rd: Add functions for extracting and modifying the upper and lower trianglular components of matrices. - is.what.R: Replaced the "not.using" vector with a more robust try(get(test)) to find out whether a particular is.* function returns a logical of len...
2005 Dec 13
0
Updated version of gdata, gtools, gplots and gmodels
...39;s suggestion) - Updated Greg and Jim's email adresses - ll.R: Suppressed warning message in attach() call. - frameApply.Rd, reorder.Rd: Remove explicit loading of gtools in examples, so that failure to import functions from gtools gets properly caught by running the examples. - upperTriangle.R, man/upperTriangle.Rd: Add functions for extracting and modifying the upper and lower trianglular components of matrices. - is.what.R: Replaced the "not.using" vector with a more robust try(get(test)) to find out whether a particular is.* function returns a logical of len...