[Rd] using rasterImage within image

Michael Sumner mdsumner at gmail.com
Wed Feb 9 23:41:10 CET 2011

Regarding the SDI problem, I'll check that as soon as the next
snapshot build of 2.13.0 is available from CRAN (probably a few days
from now, unless I can manage to compile it myself).

Cheers, Mike.

On Thu, Feb 10, 2011 at 9:29 AM, Ben Bolker <bbolker at gmail.com> wrote:
> Hash: SHA1
> On 11-02-09 03:09 PM, Henrik Bengtsson wrote:
>> On Wed, Feb 9, 2011 at 11:53 AM, Simon Urbanek
>> <simon.urbanek at r-project.org> wrote:
>>> On Feb 9, 2011, at 2:36 PM, Henrik Bengtsson wrote:
>>>> On Wed, Feb 9, 2011 at 11:25 AM, Simon Urbanek
>>>> <simon.urbanek at r-project.org> wrote:
>>>>> Ben,
>>>>> I have committed something analogous to R-devel (your rotation
>>>>> code was not unlike mine, I replicated the color handling from
>>>>> R internals to be consistent, I fixed the drawing limits and
>>>>> added a check for x/y conformance). Note that useRaster can
>>>>> only be used when x, y form a regular grid. Although I tried a
>>>>> lot of corner cases (requiring quite a few fixes), I'm sure I
>>>>> did not test all of them, so volunteers please give it a go and
>>>>> compare it with non-raster output.
>>>>> The only thing I'm not quite happy about is the argument name:
>>>>> useRaster. Personally, I hate camel case in R (it has crept in
>>>>> more recently making it horribly inconsistent) so please feel
>>>>> free to suggest a better name ;).
>>>> It.is.spelled.camelCase.
>>> Fortunately not in English ;)
>>>> What about style=c("image", "raster")?  This allows for future
>>>> extensions too.
>>> Hmm.. it's not really a "style" - the output doesn't change
>>> (ideally) - it's more of a back-end specification .. also we
>>> already have oldstyle argument in image() adding to the confusion
>>> ...
>> flavor=c("image", "raster") renderer=c("image", "raster")
>> backend=c("image", "raster") ...
>  Thanks Simon! (Any reports on the SDI Windows raster rendering issue,
> or do we need a warning/workaround there?)
>  I like "backend", or possibly "method"
>  One minor consideration: if "raster" eventually becomes the default
> (as I hope it will), there would need to be some internal logic that
> drops back to "image" if the user specifies uneven spacing and doesn't
> explicitly specify the 'backend/method' parameter ...
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Michael Sumner
Institute for Marine and Antarctic Studies, University of Tasmania
Hobart, Australia
e-mail: mdsumner at gmail.com

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