search for: fm1wheat2

...ing listed in the package description as a dependency). I checked the R-help archives thoroughly and also examined the library nlme scripts. The chapter 5 Wheat2 example from Pinheiro & Bates (2000) didn't work either: > library( nlme ) > library( lattice ) > data( Wheat2 ) > fm1Wheat2 <- gls( yield ~ variety - 1, Wheat2 ) > Variogram( fm1Wheat2, form = ~ latitude + longitude ) Error in as.data.frame.default(x[[i]], optional = TRUE) : can't coerce array into a data.frame Apologies; here is my system information: > R.version _ platfor...

  Hola,   Por favor, ¿podríais indicarme qué recursos (librerías o ideas) pueden resultar de utilidad para crear un gráfico del estilo del de la figura 3.8 del siguiente link?   http://www.tsc.uvigo.es/BIO/Bioing/ChrLDoc3.html#3.5   Actualmente estoy utilizando funciones muy básicas y la verdad es que no me encuentro muy satisfecha con el resultado.   Muchas gracias.   Eva [[alternative HTML

...ater). I had problems with the instruction Variogram using a gls class object (Section 5.4, pg 261-262). Even when I use the scripts included in the package, I get an error message and not the expected output. However, everything seems working fine with the plotting function: > Variogram( fm1Wheat2, form = ~ latitude + longitude ) Error in as.data.frame.default(x[[i]], optional = TRUE) : can't coerce array into a data.frame > plot( Variogram(fm1Wheat2, form = ~ latitude + longitude, + maxDist = 32), xlim = c(0,32) ) Could anybody help me with this? Regards, Cristin...