raster::stack() help
My guess is that there is another package hiding the raster function
-- no messages? You could explicitly use raster::stack()
Also, this avoids the call and might be more efficient:
library(raster)
a.list <- list()
for (yr in seq(2000,2008)){
....
a.layer = raster(something).
a.list <- c(a.list, a.layer)
}
a.stack = stack(a.list)
Robert
On Tue, Jul 30, 2013 at 7:14 PM, Andrew Vitale <vitale232 at gmail.com> wrote:
Works on my machine.
a.stack <- stack() a.stack
class : RasterStack nlayers : 0
stack()
class : RasterStack nlayers : 0
sessionInfo()
R version 3.0.1 (2013-05-16) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] grid stats graphics grDevices utils datasets methods base other attached packages: [1] ncdf_1.6.6 rasterVis_0.21 hexbin_1.26.2 latticeExtra_0.6-24 RColorBrewer_1.0-5 [6] lattice_0.20-15 rgdal_0.8-9 ncdf4_1.9 raster_2.1-49 sp_1.0-11 loaded via a namespace (and not attached): [1] tools_3.0.1 zoo_1.7-10
On Tue, Jul 30, 2013 at 10:14 AM, Dominik Schneider < Dominik.Schneider at colorado.edu> wrote:
Hi, I am trying to initialize an empty stack with
require(raster)
a.stack <- stack()
for (yr in seq(2000,2008)){
....
a.layer = raster(something).
a.stack <- addLayer(a.stack, a.layer)
}
Even if I just run a.stack <- stack() in the commandline:
stack()
Error in as.list(x) : argument "x" is missing, with no default
I know I've done this in the past and the help file for stack() says x can
be missing to create an empty stack. Could someone help me debug or suggest
a workaround?
Thanks
Dominik
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*Andrew P. Vitale*
Masters Student
Department of Geography
University of Nevada, Reno
(412) 915-3632
vitale232 at gmail.com
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