On 01.02.2011 16:10, steve_fried...@nps.gov wrote:
Hello,
I'm doing the following:
library(ncdf)
library(fields)
library(animation)
saline<- open.ncdf("salinity_1990.nc")
salt = get.var.ncdf(nc=saline, varid="Salinity")
# create an animation of the complete temporal domain in the ncdf file.
saveHTML({
for (i in 1:364) {
image.plot(salt[, , i])
}
}, img.name = "salinity.img", imgdir = "salinity_dir", htmlfile =
"salinity.html", zmax = c(0, 80),
autobrowse = FALSE, title = "TIME SALINITY PREDICTIONS",
description = c("This should plot 1 years daily salinity
predictions in Florida Bay")
)
Almost all of the data sets I work with are multi-temporal spatial forms.
Being able to view the time sequence is very important to us, The animation
procedure is very good. I appreciate its development.
Here are my questions.
1) I would like to find a procedure to set the maximum value of the legend
of an image.plot. Each time step has a different maximum value, but for
the animation to be valuable, I need to standardize these to a maximum such
that the scale is equal in each time step.
Specify the breaks manually using the argument "breaks" that can be
passed to "..." in image.plot().
2) Secondly, when setting imgdir it only goes to a temp directory. If I
define a directory, the new directory path is added to the default temp
directory path. Is there a way to fix this so that the output directory is
truly defined in the saveHTML statements?
I don't see a way, so just ask the maintainer of the animation package
to allow for absolute paths or so.
Uwe Ligges
I'm working on a windows XP machine using R 2.12.1.
Thanks
Steve
Steve Friedman Ph. D.
Ecologist / Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034
steve_fried...@nps.gov
Office (305) 224 - 4282
Fax (305) 224 - 4147
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and provide commented, minimal, self-contained, reproducible code.
