On Feb 19, 2009, at 6:38 , Sklyar, Oleg (London) wrote:
Two ideas:
1) A library for interactive plots in R
R lacks functionality that would allow displaying of interactive
plots with two distinct functionalities: zooming and panning. This
functionality is extremely important for the analysis of large, high
frequency, data sets spanning over large ranges (in time as well).
The functionality should acknowledge Axis methods in callbacks on
rescale (so that it could be extended to user-specific classes for
axis generation) and should have a native C interface to R (i.e. no
Java, but such cross platform widgets like GTK or QT or anything
similar that does not require heavy-weight add-ons). GTK has been
used successfully from within R in many applications (RGtk, rgobby,
EBImage etc) on both *nix and Windows, and thus could be a
preferential option, it is also extremely easy to integrate into R.
The existing tools (e.g. iplots) are slow, unstable and lack support
for time/date plots (or actually any non-standard axes) and they are
all Java. We are looking into stanard xy-plots as well as image and
3D plots. Obviously one can think of further interactivity, but this
would be too much for the Summer of Code project. A good prototype
would already be a step forward.
If primitive 3d scatterplot interactivity is all you want, go with
rggobi. It's GTK and has all this already and much more. However,
ggobi also shows why GTK is not a good choice for general interactive
graphics toolkit - it [GTK] is slow and lacks reasonable graphics
support. OpenGL is IMHO a better way to go since IG don't really
leverage any of the widgets (you get them for free via R widgets
packages anyway) and OpenGL gives you excellent speed, alpha-support
and anti-aliasing etc.
As you can imagine I don't agree with most of your statements above
and I'm happy to discuss them in a separate thread. Just as an aside
iPlots 3.0 (announced for useR!/DSC) are no longer Java based and have
a native C interface.
Cheers,
S
2) Cross platform GUI debugger, preferably further Eclipse
integration (beyond StatET capabilities)
Tibco has recently released the S+ workbench for eclipse which has a
reasonable support for non-command line debugging. In the R
community, the StatET eclipse plugin mimics a lot of code
development functionality of S+ workbench, but has poor support for
in-line execution of R sessions in eclipse and does not have
debugging capabilities. Supporting this project further, or
developing a GUI debugger independent of eclipse, are both
acceptable options. The debugger should allow breakpoints, variable
views etc.
For both of the above, our interest is mostly on the Linux side, but
one should look into cross-platform solutions.
Regards,
Oleg
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-----Original Message-----
From: r-devel-boun...@r-project.org
[mailto:r-devel-boun...@r-project.org] On Behalf Of Friedrich Leisch
Sent: 18 February 2009 22:54
To: r-devel@r-project.org
Cc: manuel.eugs...@stat.uni-muenchen.de
Subject: [Rd] Google Summer of Code 2009
Hi,
in approximately one months time mentoring institutions can propose
projects for the Google Summer of Code 2009, see
http://code.google.com/soc/
Last year the R Foundation succesfully participated with 4 projects,
see http://www.r-project.org/SoC08/ for details. We want to
participate again this year. Our project proposals will be managed by
Manuel Eugster (email address in CC). Manuel is one of my PhD
students
and mentored the Roxygen project last year. This mail is mainly
intended to make you aware of the program, Manuel will send a
followup
email with more technical details in the next days.
In this phase we are looking for potential mentors who can offer
interesting projects to students. I don't think that we will get
much
more than 4-6 projects, so don't be disappointed if you propose
something and don't get selected.
There are two selection steps involved: (a) The R Foundation has to
compile an official "ideas list" of projects, for which students can
apply. Last year we had 8 of those. After that, we (b) get a certain
number of slots from Google (4 last year) and all prospective project
mentors can vote on which projects actually get funding.
Currently we are looking for good ideas for phase (a). I give no
guarantees that all ideas will get on our official ideas list, what
we
pick depends on the number of submissions and topics, respectively.
We
want to make sure to have a broad range of themes, it is unlikely,
that we will, e.g., pick 10 database projects. Also keep in mind that
students have only three months time. This is not a research exercise
for the students, you should have a rough idea what needs to be done.
Last year we had a majority of "infrastructure projects", and only
few
with focus on statistical algorithms. We got a lot of applications
for
the latter, so don't hesitate to formulate projects in that
direction. Important infrastructure may get precedence over
specialized algorithms, though, because the whole community can
benfit
from those. But that will be a decision in phase (b), and we are not
there yet.
Please don't send any ideas to me right now, wait for the above
mentioned email by Manuel on the technical details for idea
submission.
Best,
Fritz
--
--------------------------------------------------------------
---------
Prof. Dr. Friedrich Leisch
Institut für Statistik Tel: (+49 89)
2180 3165
Ludwig-Maximilians-Universität Fax: (+49 89)
2180 5308
Ludwigstraße 33
D-80539 München
http://www.statistik.lmu.de/~leisch
--------------------------------------------------------------
---------
Journal Computational Statistics --- http://www.springer.com/180
Münchner R Kurse --- http://www.statistik.lmu.de/R
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