Re: [R-sig-Geo] problem on krige in gstat package

2012-07-26 Thread Giuseppe Calamita
zhijie zhang wrote . #-My problems are as follows.--# #Method1-Error # perform ordinary kriging prediction-errors? v - variogram(g) Who is 'g'?? you forget to show us how you defined-created the g object. - Giusepep Calamita PhD italian National Council of Research -

Re: [R-sig-Geo] SpatialPoints, SpatialGrid and related terminology

2012-07-03 Thread Giuseppe Calamita
Ciao Gabriele, you can find a shorter yet very useful descriptions of how spatial classes work in one of the vignettes of the sp-package. To visualize that, simply write on R terminal vignette(intro_sp) this will open a pdf. You can also download it directly from

Re: [R-sig-Geo] ordinary kriging using 'krige.conv' function

2012-06-27 Thread Giuseppe Calamita
better. Cheers Giuseppe Calamita -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/ordinary-kriging-using-krige-conv-function-tp7580281p7580349.html Sent from the R-sig-geo mailing list archive at Nabble.com. ___ R-sig-Geo mailing

[R-sig-Geo] rsaga error

2012-04-06 Thread Giuseppe Calamita
remember some older version of R and SAGA had problems in communication, but I cannot remember which ones were the version working Any suggestion, please. Thank you and happy Easter Giuseppe Calamita -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/rsaga-error-tp7442753p7442753

Re: [R-sig-Geo] how to choose best parameters of variogram model in gstat

2012-03-24 Thread Giuseppe Calamita
(reshape.data[,i], pred.basis) Cheers Giuseppe Calamita -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/how-to-choose-best-parameters-of-variogram-model-in-gstat-tp7394459p7401439.html Sent from the R-sig-geo mailing list archive at Nabble.com

Re: [R-sig-Geo] IDW example

2011-10-17 Thread giuseppe calamita
Hi Erin, did you check the book from Roger Bivand -Edzer Pebesma and Gomez-Rubìo: Applied spatial data analysis with R? There is some short explanation of how the algorithm work and just one record of code. If you want I think I can send you some line of codes as examples. Giuseppe

[R-sig-Geo] more Geostat classes

2011-08-17 Thread giuseppe calamita
You can find more information here: http://spatial-analyst.net/wiki/index.php?title=Training_in_R is the wiki page of Tomislav! bye!  Giuseppe Calamita Da: r-sig-geo-requ...@r-project.org r-sig-geo-requ...@r-project.org A: r-sig-geo@r-project.org Inviato: Lunedì

[R-sig-Geo] regression kriging, newdata parameter

2011-02-23 Thread giuseppe calamita
Hi, I want to perform spatial interpolation of soil moisture (here named 'sm') using regression kriging (RK) following the example given by Tom Hengl http://spatial-analyst.net/wiki/index.php?title=Spatial_prediction_of_soil_moisture) and compare results with OK. The covariate is the soil