Thanks, Jacob.
For the community: I've successfully installed ImageMagick on Mac OS 10.6.4
(i.e. the sample commands to verify functionality check OK:
http://www.imagemagick.org/script/binary-releases.php?ImageMagick=cmdb7qc5snnquootuef90ki645#macosx).
I receive an error running Jacob's example code:
Error in cmd.fun(sprintf("%s --version", convert), intern = TRUE) :
error in running command
sh: convert: command not found
I don't believe this is an 'animate' issue, but is a thorny path problem that
apparently plagues ImageMagick installs via MacPorts. I tried some things based
on the message boards at ImageMagick without success. This isn't the place for
ImageMagick troubleshooting, but a heads up for Mac users trying to implement
Jacob's example...
Thanks,
Kevin
On Nov 15, 2010, at 9:35 PM, steven mosher wrote:
> Thanks Jacob,
>
> I was unable to get ImageMagick working ( which saveMovie() relies upon.. as
> I recall ) so I had to live with the html animation.
>
>
>
> On Mon, Nov 15, 2010 at 12:58 PM, Jacob van Etten <jacobvanet...@yahoo.com>
> wrote:
> A function is not really necessary. It´s actually quite simple.
>
> library(raster)
> library(animation)
> setwd("c:/empty")
>
> logo <- raster(system.file("external/rlogo.grd", package="raster"),
> values=TRUE)
>
> saveMovie(
> for(i in 1:250)
> {
> logo1 <- logo
> logo1[logo1<i] <- 0
> #here you could also extract a RasterLayer from a RasterStack
> plot(logo1, main=i)
> },
> loop=1,
> interval= 0.1,
> outdir = getwd(),
> moviename="logo")
>
> Cheers,
>
> Jacob.
>
> --- On Sat, 13/11/10, Kevin Ummel <kevinum...@gmail.com> wrote:
>
> From: Kevin Ummel <kevinum...@gmail.com>
> Subject: [R-sig-Geo] Anyone attempted to "animate" multi-layered rasters?
> To: R-sig-Geo@stat.math.ethz.ch
> Date: Saturday, 13 November, 2010, 12:58
>
> Hello,
>
> I came across the 'animate' package, and I'm wondering if anyone has
> successfully adapted it to create animations of multi-layered spatial data.
>
> This seems like a logical advance of R's spatial data visualization,
> especially given the prominence of NetCDF and HDR file types, but I don't
> want to replicate if someone else already has a function in working order...
>
> Cheers,
> Kevin
>
> Kevin Ummel
> Senior Visiting Associate, Center for Global Development
> MESPOM Candidate, University of Manchester
>
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