[Rd] using rasterImage within image

Sat Feb 12 07:22:59 CET 2011

Hello, that appears to have fixed it. Thank you very much.

I can now repeat the reported workflow and the image appears on the
fifth (and subsequent) calls.

Cheers, Mike.

 sessionInfo()
R version 2.13.0 Under development (unstable) (2011-02-11 r54330)
Platform: x86_64-pc-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252
[3] LC_MONETARY=English_Australia.1252 LC_NUMERIC=C
[5] LC_TIME=English_Australia.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

On Fri, Feb 11, 2011 at 12:41 PM, Paul Murrell <p.murrell at auckland.ac.nz> wrote:
> Hi
>
> Just committed another fix that solves this problem for me at least.  If you
> want to test for yourself, the magic revision number that you are looking
> for is r54330.
>
> Thanks again for your help.
>
> Paul
>
> On 10/02/2011 7:54 p.m., Michael Sumner wrote:
>>
>> Hello, I'm afraid the SDI graphics issue is still a problem in 2.13.0
>> 2011-02-09 r54308.
>>
>> To reproduce, in a fresh R session (Windows in SDI mode):
>>
>> ## create a dummy dataset
>> m<- matrix(c(0.2, 0.4, 0.6, 0.8), 2, 2)
>>
>> ## simple helper function to open the windows() device and plot the matrix
>> draw.f<- function(x) {
>>    plot(0, xlim = c(0, 1), ylim = c(0, 1))
>>    rasterImage(x, 0, 0, 1, 1, interpolate = FALSE)
>> }
>>
>> draw.f(m)
>>
>> ## repeat the following 2 lines five times:
>>
>> dev.off()
>> draw.f(m)
>>
>> On the fifth attempt, only the background plot appears - but the
>> raster is visible on resize of the windows() device.
>>
>> Cheers, Mike.
>>
>> sessionInfo()
>> R version 2.13.0 Under development (unstable) (2011-02-09 r54308)
>> Platform: x86_64-pc-mingw32/x64 (64-bit)
>>
>> locale:
>> [1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252
>> [3] LC_MONETARY=English_Australia.1252 LC_NUMERIC=C
>> [5] LC_TIME=English_Australia.1252
>>
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>
>>
>>
>> On Thu, Feb 10, 2011 at 5:31 PM, baptiste auguie
>> <baptiste.auguie at googlemail.com>  wrote:
>>>
>>> Dear all,
>>>
>>> Back when grid.raster() was introduced, it was suggested that perhaps
>>> grid.rect() could use grid.raster() in case of even spacing. The
>>> response at the time was that it would be best to keep the two
>>> functions separate at a lower level, that is grid.rect() and
>>> grid.raster(), but perhaps a new function grid.image() could be
>>> proposed at a higher level with the two possible backends. If this is
>>> done in grid graphics, perhaps the same convention could be used for
>>> base graphics: image() would be high level with the backend option,
>>> and a new function ("tiles()", perhaps?) would implement the current
>>> behavior of image().
>>>
>>> In any case, it would be nice to have a unified scheme to switch
>>> between "tiles" and raster; currently lattice (panl.levelplot.raster)
>>> and a few other packages all do it separately.
>>>
>>> Best wishes,
>>>
>>> baptiste
>>>
>>>
>>>
>>> On 9 February 2011 23:29, Ben Bolker<bbolker at gmail.com>  wrote:
>>>>
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> 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 ...
>>>> -----BEGIN PGP SIGNATURE-----
>>>> Version: GnuPG v1.4.10 (GNU/Linux)
>>>> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>>>>
>>>> iEYEARECAAYFAk1TFVcACgkQc5UpGjwzenOa6ACfVnJq67cG0czATeyti7AxgUbw
>>>> ZWwAniA7JuYCv4clq8e6jwWQuMvw/r+m
>>>> =/da6
>>>> -----END PGP SIGNATURE-----
>>>>
>>>> ______________________________________________
>>>> R-devel at r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>>
>>>
>>> ______________________________________________
>>> R-devel at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>
>>
>>
>
> --
> Dr Paul Murrell
> Department of Statistics
> The University of Auckland
> Private Bag 92019
> Auckland
> New Zealand
> 64 9 3737599 x85392
> paul at stat.auckland.ac.nz
> http://www.stat.auckland.ac.nz/~paul/
>

-- 
Michael Sumner
Institute for Marine and Antarctic Studies, University of Tasmania
Hobart, Australia
e-mail: mdsumner at gmail.com