[R] 2D filter in R?

[Bert Gunter]

The Bioconductor list/repository will have lots of image processing stuff.

-- Bert

On Wed, Jan 11, 2012 at 3:21 PM, Michael <comtech.usa at gmail.com> wrote:
> Okay thanks guys!
>
> I was actually looking for image processing libraries in R.
>
> Specifically, I am looking for something like "filter2d" for
> images(pixels)...
>
> (speed is not a concern for me, since my images are really small, 200x200,
> etc.)
>
> And in fact, these are not images, these are 2d matrix numbers(i.e. numbers
> in a matrix format), I just wanted to smooth them.
>
> Any more pointers?
>
> Thanks a lot!
>
> On Wed, Jan 11, 2012 at 5:18 PM, Bert Gunter <gunter.berton at gene.com> wrote:
>>
>> ?loess   ## in base R
>> does 2d filtering , though it's not a Gaussian one
>>
>> -- Bert
>>
>> On Wed, Jan 11, 2012 at 3:00 PM, Rolf Turner <rolf.turner at xtra.co.nz>
>> wrote:
>> > On 12/01/12 09:17, Michael wrote:
>> >>
>> >> Hi all,
>> >>
>> >> I am looking for a command for doing 2D filtering (rectangular or
>> >> Gaussian) in R...
>> >>
>> >> I have looked at ksmooth, filter and convolve but they seem to be 1D...
>> >>
>> >> Any thoughts?
>> >>
>> >> Thanks a lot!
>> >
>> >
>> > I'm not sure what you really need/want to do, but you might have a look
>> > at "smooth.ppp" (and possibly "density.ppp") from the "spatstat"
>> > package.
>> >
>> >    cheers,
>> >
>> >        Rolf Turner
>> >
>> > ______________________________________________
>> > R-help at r-project.org mailing list
>> > https://stat.ethz.ch/mailman/listinfo/r-help
>> > PLEASE do read the posting guide
>> > http://www.R-project.org/posting-guide.html
>> > and provide commented, minimal, self-contained, reproducible code.
>>
>>
>>
>> --
>>
>> Bert Gunter
>> Genentech Nonclinical Biostatistics
>>
>> Internal Contact Info:
>> Phone: 467-7374
>> Website:
>>
>> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>
>



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm