using rasterImage within image

Ben,

did you actually look at the result of your function with useRaster=TRUE ? ;) [Hint: don't use an image that is symmetric]

Apart from that nice bug there are more issues as well, try
image(matrix(1:4,2),col=1:3)
The underlying issue is that as.raster() is not quite what you would hope. 
Unfortunately I'm not aware of an easy fix (that doesn't involve going

In general, I think it's a nice option, but I don't think you'll get away with only a few lines...

Cheers,
Simon



On Feb 8, 2011, at 8:49 PM, Ben Bolker wrote:

 Has anyone yet tried incorporating rasterImage into the base image()
function?  It seems to make a *huge* difference, with
a very small number of added/changed lines of code.  (Of course I have
barely tested it at all.)
 Is there any reason this *shouldn't* go into the next release?

source("image.R")
z <- matrix(runif(1e6),nrow=1000)
image(z)
image(z,useRaster=TRUE)

 (Patch against SVN 54284 attached; people can contact me if it doesn't
go through and they want it.)

 Ben Bolker

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