Martin Henry H. Stevens
2004-Sep-16 20:02 UTC
[R] geoR/variog4() not returning all directions
Mac OS 10.3.5, R 2.0.0 latest version of geoR I have an incomplete 5 x 20 spatial array of samples (60 out of 100 possible locations) for which I would like to calculate directional variograms using variog4(). Unfortunately, I can't get it to return all 4 directions. It returns variograms for 45, 90, and 135 degrees, omitting 0 degrees (pi/4, pi/2, 3pi/4, omitting 0). If I specify 0 degrees, it returns a variogram with (binned) distances of 1, 2, 3, and 4. Any ideas what I am doing wrong, or what other information I could provide to better elucidate my problem? Many thanks, as usual. Hank Stevens Dr. Martin Henry H. Stevens, Assistant Professor 338 Pearson Hall Botany Department Miami University Oxford, OH 45056 Office: (513) 529-4206 Lab: (513) 529-4262 FAX: (513) 529-4243 http://www.cas.muohio.edu/botany/bot/henry.html http://www.muohio.edu/ecology/ http://www.muohio.edu/botany/ "E Pluribus Unum"
Paulo Justiniano Ribeiro Jr
2004-Sep-16 20:44 UTC
[R] geoR/variog4() not returning all directions
Hi Martin The only pssible explanation I can find from your description is that the code may not be fiuding pairs in one of the directions. however...I never discard the possibility of a bug :) Could you please send me the data and the piec of relevant code such that i can rteproduce the error here? Thanks P.J, On Thu, 16 Sep 2004, Martin Henry H. Stevens wrote:> Mac OS 10.3.5, R 2.0.0 > latest version of geoR > > I have an incomplete 5 x 20 spatial array of samples (60 out of 100 > possible locations) for which I would like to calculate directional > variograms using variog4(). Unfortunately, I can't get it to return all > 4 directions. It returns variograms for 45, 90, and 135 degrees, > omitting 0 degrees (pi/4, pi/2, 3pi/4, omitting 0). If I specify 0 > degrees, it returns a variogram with (binned) distances of 1, 2, 3, and > 4. > > Any ideas what I am doing wrong, or what other information I could > provide to better elucidate my problem? > Many thanks, as usual. > Hank Stevens > > Dr. Martin Henry H. Stevens, Assistant Professor > 338 Pearson Hall > Botany Department > Miami University > Oxford, OH 45056 > > Office: (513) 529-4206 > Lab: (513) 529-4262 > FAX: (513) 529-4243 > http://www.cas.muohio.edu/botany/bot/henry.html > http://www.muohio.edu/ecology/ > http://www.muohio.edu/botany/ > "E Pluribus Unum" > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > >Paulo Justiniano Ribeiro Jr Departamento de Estat??stica Universidade Federal do Paran?? Caixa Postal 19.081 CEP 81.531-990 Curitiba, PR - Brasil Tel: (+55) 41 361 3573 Fax: (+55) 41 361 3141 e-mail: paulojus at est.ufpr.br http://www.est.ufpr.br/~paulojus /"\ \ / Campanha da fita ASCII - contra mail html X ASCII ribbon campaign - against html mail / \