Re: [R] add diagonal line
On Wed, 2010-10-27 at 13:17 -0200, Marcelo Lima wrote: Hi, I would like to add a line on the diagonal of a covariance matrix, is there a quick way to do it besides abline? Thanks! What's wrong with abline()? It does exactly what you want. By the way, reproducible example such as requested by David would something like: cmat - matrix(rnorm(100), ncol = 10) diag(cmat) - 1 contour(1:10, 1:10, cmat) abline(11, -1, col = red, lwd = 2) box() I.e. some code with example data that shows us what you are trying to do. It is not always possible to grep the meaning from a textual description sufficiently well to be able to move from there to code. This is discussed in the posting guide. HTH G -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] add diagonal line to covariance matrix
On 22.10.2010 19:36, Marcelo Lima wrote: Hi, Created a covariance matrix and i would like to add a diagonal line to the plot, any suggestions? I do not really understand your question. If you actually want to access the main diagonal of a matrix or add a diagonal matrix to another matrix, see ?diag Uwe Ligges Thanks __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] add diagonal line to covariance matrix
Hi, Created a covariance matrix and i would like to add a diagonal line to the plot, any suggestions? Thanks -- Marcelo Andrade de Lima UNIFESP - Universidade Federal de São Paulo Departamento de Bioquímica Disciplina de Biologia Molecular Rua Três de Maio 100, 4 andar - Vila Clementino, 04044-020 Lab +55 11 55764438 R.1188 Cell +55 11 92725274 ml...@unifesp.br [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
