Re: [Rd] Google Summer of Code 2009
On 2/19/09, Dirk Eddelbuettel e...@debian.org wrote: [...] On 19 February 2009 at 09:33, Simon Urbanek wrote: | 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. I don't want to turn this into an all-out 'vi versus emacs' slugfest but: -- GTk it not the only choice, and I have been very happy with Qt (and Qwt for a simple yet nice plot widget) on both Linux and Windows; I don't have access to a Mac so I didn't test there. -- Qt supports OpenGL natively. The demos are very impressive (for OpenGL as well as the other widgets). -- Deepayan has been working on Qt-based code to enhance R, as that appears to be 'unannounced' I won't post the SVN repo but allow me to state that the code already ran all (or almost all) examples from the lattice book. Just to expand on that: yes, I have been working on a Qt-based infrastructure, and Michael Lawrence is also involved now, and has been working on refining and optimizing it for more general uses. The details are still in flux, but we hope to have something to show at DSC. Which is not to say that other alternatives wouldn't be good, of course. -Deepayan __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
On Fri, 20 Feb 2009, Friedrich Leisch wrote: On Thu, 19 Feb 2009 10:52:19 -0600, Dirk Eddelbuettel (DE) wrote: [ Cool how nobody cared about Fritz' request not to post ideas yet :) ] Well, I kind of expected that ;-) See also below. [ I broadly share Oleg's wouldn't it be nice to have better plot devices wish. But I don't think it is a three-month summer target, Yes, that's exactly what came to my mind first The principle applies to some extent to all wouldn't it be nice if R did... comments. If something would obviously be a widely appreciated addition to R (such as good interactive graphics), there is probably some good reason that it is hard. It's relatively unlikely that no-one had thought of it or had realized it would be worth having. For ideas like that we are likely to need some way to make the implementation easier (money, code, new approaches to the programming,...). -thomas Thomas Lumley Assoc. Professor, Biostatistics tlum...@u.washington.eduUniversity of Washington, Seattle __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
Oleg, On Feb 19, 2009, at 9:47 , Sklyar, Oleg (London) wrote: Simon, I would not like to take it offline as I disagree with your points and think it is fair to let other users know why. I didn't say offline, I said other thread, since this is not really about GSOC so I think this is getting OT ... To make it clear first, I am most interested in 2D, not 3D plots, and rgobbi is not a good enough solution, unfortunately. 1) I spent loads of time looking for good, if any at all, interactive graphics packages for R. There are hardly many, and apart from rgl there are no good ones as I see it. Maybe we are talking about entirely different things here - rgl is not interactive graphics at all - it is essentially a 3d renderer/viewer, not a data analytic tool [although it can be (ab)used as a very limited one for very specific tasks] - see literature on interactive graphics ... I do accept that this can be subjective, but I think many people will share my opinion. 2) With respect to iplots: http://cran.r-project.org/web/packages/iplots/index.html states: Version:1.1-3 Depends:R (≥ 1.5.0), methods, rJava (≥ 0.5-0) http://www.rosuda.org/iplots/ states: News: * 2007/08/07 Released iplots_1.1-1 on CRAN... There might be version 3 available somewhere, but it is not obvious where and the above one is Java based. I have tried the above version about 4 months ago -- it was slow, unstable and did not have any support for time axis at all. If I find it, I will give it a try and will be able to post corresponding comments. free-software-author's rant At the very least it is polite to report any such issues (with details) to the authors. Comments like X is bad, slow and crashes are completely useless since they are unsubstantiated claims that don't help in creating better software -- neither are they helpful as a starting point for creating new software. If you want to be of any use to the community you should be more specific as of what you are talking about, what are the data examples etc. and talk to the authors. /free-software-author's rant Given your comments I suspect you have very specific ideas of use, but we can only know when you tell us. In general, Java graphics are not slow, in fact they are often faster than conventional native implementations and are far more flexible. [[split off to Java for graphics thread if you wish]] As for iPlots, the development has shifted a while ago from the 'old' iPlots to the new ones which are in development stage (as I said they are announced for the useR! conference). My point was not about telling you to use a specific software, it was rather about making you aware of the fact that what you describe already exists (ggobi definitely is IG in GTK) and/or is worked on (iPlots 3.0) with possibly better approach. I do fully support a GSOC proposal for interactive graphics software, it's just I think your formulation included some unnecessarily restricting details and personal opinions as well as misunderstandings as of what interactive graphics are. If we get that right, I think it's a great opportunity. [[only this is really for the GSOC thread]] 2) rggobi is not a solution for 2D graphics at all and this is what is missing in R. I would not mention rgobbi myself having had no look at it first. However, if somebody works on interactive 2D plots, there is no reason why this person should think of 3D as well to have all in one framework. I'll let ggobi authors respond to that, but ggobi is not about 3d at all - in fact 3d is just a very small part of ggobi. Again, I suspect it's not really interactive graphics that you have in mind and/or you are not familiar with it ... [[split off to ggobi thread]] 3) I have a prototype using gtkdatabox for very fast interactive plots in R using GTK, but it is limited by the capabilities of the gtkdatabox widget, not that of R or GTK as such. I don't know about your prototype, so I cannot really comment on that, but gtkdatabox is not IG, either. I do think there is a need for an interactive graphics package for R. I do completely agree with that, but interactive means it satisfies basic requirements on IG such as the availability of selection, highlighting, queries, interactive change of parameters etc. This is not about 2d/3d clouds at all - that we have for decades already. Also this is not about hacks to glue on interactivity to existing graphics systems with a chewing gum. We need a versatile (possible extensible) set of interactive statistical plots -- at least that's what our experience shows. Cheers, Simon -Original Message- From: Simon Urbanek [mailto:simon.urba...@r-project.org] Sent: 19 February 2009 14:34 To: Sklyar, Oleg (London) Cc: Friedrich Leisch; r-devel@r-project.org; manuel.eugs...@stat.uni-muenchen.de Subject: Re: [Rd] Google Summer of Code 2009
Re: [Rd] Google Summer of Code 2009
[ Cool how nobody cared about Fritz' request not to post ideas yet :) ] [ I broadly share Oleg's wouldn't it be nice to have better plot devices wish. But I don't think it is a three-month summer target, and it's not on the side of things Fritz / Manuel prefer as it is infrastructure rather than pure statistics ... Then again, maybe we should put that up to a wider discussion. I like 'infrastructure' as R is a platform to me. ] On 19 February 2009 at 09:33, Simon Urbanek wrote: | 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. I don't want to turn this into an all-out 'vi versus emacs' slugfest but: -- GTk it not the only choice, and I have been very happy with Qt (and Qwt for a simple yet nice plot widget) on both Linux and Windows; I don't have access to a Mac so I didn't test there. -- Qt supports OpenGL natively. The demos are very impressive (for OpenGL as well as the other widgets). -- Deepayan has been working on Qt-based code to enhance R, as that appears to be 'unannounced' I won't post the SVN repo but allow me to state that the code already ran all (or almost all) examples from the lattice book. Dirk -- Three out of two people have difficulties with fractions. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
On Thu, 19 Feb 2009 10:52:19 -0600, Dirk Eddelbuettel (DE) wrote: [ Cool how nobody cared about Fritz' request not to post ideas yet :) ] Well, I kind of expected that ;-) See also below. [ I broadly share Oleg's wouldn't it be nice to have better plot devices wish. But I don't think it is a three-month summer target, Yes, that's exactly what came to my mind first: As usual, please do read docs before you post ... in this case the format of SOC (I included the link in my original email, googling for summer of code will also take you there): a student is paid to code three months for us, the 3 months inlcude writing documentation. The student will not be an expert in R internals, and no magic wizard. The student should familiarize himself with the project before the actual coding period, but there is only so much you can do in limited time. I think you can expect a similar amount of code as in a master/diploma thesis (but NOT a dissertation). If you had waited for Manuels email you would also have learned about another VERY IMPORTANT POINT: The collection of ideas for summer of code is not like writing a list of wishes to Santa Claus (or the Christkind or whatever your local variation may be): we only need ideas which YOU ARE WILLING TO MENTOR, i.e., you write the specs for the project, communicate with students interested in the project, select the best applicant and supervise the student during the coding period. I am not sure everyone on this thread is aware about this (if all of you were I apologize). If you propose an idea, you simultaneously agree to volunteer a considerable amount of your own time. But that time can really be worth the effort (otherwise we wouldn't be doing it). and it's not on the side of things Fritz / Manuel prefer as it is infrastructure rather than pure statistics ... Then again, maybe we should put that up to a wider discussion. I like 'infrastructure' as R is a platform to me. ] I have no preference for pure statistics: last year we had 75% infrastructure ideas and 25% statistics. I simply want to shift the percentages to a more even ratio, because we had many application on the statistical side and I don't want to waste talent. It is also our USP in the summer of code. Best, Fritz __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
On 20 February 2009 at 12:06, Friedrich Leisch wrote: | On Thu, 19 Feb 2009 10:52:19 -0600, | Dirk Eddelbuettel (DE) wrote: | |[ Cool how nobody cared about Fritz' request not to post ideas yet :) ] | | Well, I kind of expected that ;-) | | See also below. | |[ I broadly share Oleg's wouldn't it be nice to have better plot devices | wish. But I don't think it is a three-month summer target, | | Yes, that's exactly what came to my mind first: As usual, please do | read docs before you post ... in this case the format of SOC (I | included the link in my original email, googling for summer of code | will also take you there): a student is paid to code three months for | us, the 3 months inlcude writing documentation. The student will not | be an expert in R internals, and no magic wizard. The student should | familiarize himself with the project before the actual coding period, | but there is only so much you can do in limited time. I think you can | expect a similar amount of code as in a master/diploma thesis (but | NOT a dissertation). | | If you had waited for Manuels email you would also have learned about | another VERY IMPORTANT POINT: The collection of ideas for summer of | code is not like writing a list of wishes to Santa Claus (or the | Christkind or whatever your local variation may be): we only need | ideas which YOU ARE WILLING TO MENTOR, i.e., you write the specs for | the project, communicate with students interested in the project, | select the best applicant and supervise the student during the coding | period. I am not sure everyone on this thread is aware about this (if | all of you were I apologize). If you propose an idea, you | simultaneously agree to volunteer a considerable amount of your own | time. But that time can really be worth the effort (otherwise we | wouldn't be doing it). I am not sure if you're lecturing just to me or the audience at large; if it just me allow me to remind you that I mentored last year and helped to bring a project from proposal to inclusion onto CRAN and into user's hands. In fact, I mentored another one (on cran source to deb package automation) at Debian as well. So yes, I am in fact fully aware of most of these points. I would at this point also like to correct something you said in the earlier mail where you said that may get four to six slots. I am doubtful about that. O verall number of GSoC slots are _down_ as per Leslie. We have no priors on whether more or less organisations are admitted or not. If I were a betting man, I'd say three to four slots. So let's make them count. Dirk -- Three out of two people have difficulties with fractions. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
On Thu, 19 Feb 2009 20:25:35 -0600, Dirk Eddelbuettel (DE) wrote: On 20 February 2009 at 12:06, Friedrich Leisch wrote: | On Thu, 19 Feb 2009 10:52:19 -0600, | Dirk Eddelbuettel (DE) wrote: | |[ Cool how nobody cared about Fritz' request not to post ideas yet :) ] | | Well, I kind of expected that ;-) | | See also below. | |[ I broadly share Oleg's wouldn't it be nice to have better plot devices | wish. But I don't think it is a three-month summer target, | | Yes, that's exactly what came to my mind first: As usual, please do | read docs before you post ... in this case the format of SOC (I | included the link in my original email, googling for summer of code | will also take you there): a student is paid to code three months for | us, the 3 months inlcude writing documentation. The student will not | be an expert in R internals, and no magic wizard. The student should | familiarize himself with the project before the actual coding period, | but there is only so much you can do in limited time. I think you can | expect a similar amount of code as in a master/diploma thesis (but | NOT a dissertation). | | If you had waited for Manuels email you would also have learned about | another VERY IMPORTANT POINT: The collection of ideas for summer of | code is not like writing a list of wishes to Santa Claus (or the | Christkind or whatever your local variation may be): we only need | ideas which YOU ARE WILLING TO MENTOR, i.e., you write the specs for | the project, communicate with students interested in the project, | select the best applicant and supervise the student during the coding | period. I am not sure everyone on this thread is aware about this (if | all of you were I apologize). If you propose an idea, you | simultaneously agree to volunteer a considerable amount of your own | time. But that time can really be worth the effort (otherwise we | wouldn't be doing it). I am not sure if you're lecturing just to me or the audience at large; Of course to the audfiance at large, I know that you know the rules of the game. That I answered your email, in the thread was more or less chance. Sorry if I gave a wrong impression (wouldn't have possibly thought that you could feel addressed personally). My sincere apologies!!! I would at this point also like to correct something you said in the earlier mail where you said that may get four to six slots. I am doubtful about that. O verall number of GSoC slots are _down_ as per Leslie. We have no priors on whether more or less organisations are admitted or not. If I were a betting man, I'd say three to four slots. OK, didn't know that number of slots is down (should probably read the docs better myself). I was assuming that the number of slots is approx the same, and hoping for more slots in the second year (because I know that all organizations get fewer in their first year). Best, Fritz __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
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. 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
Re: [Rd] Google Summer of Code 2009
Simon, I would not like to take it offline as I disagree with your points and think it is fair to let other users know why. To make it clear first, I am most interested in 2D, not 3D plots, and rgobbi is not a good enough solution, unfortunately. 1) I spent loads of time looking for good, if any at all, interactive graphics packages for R. There are hardly many, and apart from rgl there are no good ones as I see it. I do accept that this can be subjective, but I think many people will share my opinion. 2) With respect to iplots: http://cran.r-project.org/web/packages/iplots/index.html states: Version:1.1-3 Depends:R (≥ 1.5.0), methods, rJava (≥ 0.5-0) http://www.rosuda.org/iplots/ states: News: * 2007/08/07 Released iplots_1.1-1 on CRAN... There might be version 3 available somewhere, but it is not obvious where and the above one is Java based. I have tried the above version about 4 months ago -- it was slow, unstable and did not have any support for time axis at all. If I find it, I will give it a try and will be able to post corresponding comments. 2) rggobi is not a solution for 2D graphics at all and this is what is missing in R. I would not mention rgobbi myself having had no look at it first. However, if somebody works on interactive 2D plots, there is no reason why this person should think of 3D as well to have all in one framework. 3) I have a prototype using gtkdatabox for very fast interactive plots in R using GTK, but it is limited by the capabilities of the gtkdatabox widget, not that of R or GTK as such. I do think there is a need for an interactive graphics package for R. Dr Oleg Sklyar Research Technologist AHL / Man Investments Ltd +44 (0)20 7144 3107 oskl...@maninvestments.com -Original Message- From: Simon Urbanek [mailto:simon.urba...@r-project.org] Sent: 19 February 2009 14:34 To: Sklyar, Oleg (London) Cc: Friedrich Leisch; r-devel@r-project.org; manuel.eugs...@stat.uni-muenchen.de Subject: Re: [Rd] Google Summer of Code 2009 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
Re: [Rd] Google Summer of Code 2009
On Thu, Feb 19, 2009 at 3:47 PM, Sklyar, Oleg (London) oskl...@maninvestments.com wrote: I do think there is a need for an interactive graphics package for R. There are also the GTK-based playwith, and latticist; unsure though whether they fit your requirements. Liviu -- Do you know how to read? http://www.alienetworks.com/srtest.cfm Do you know how to write? http://garbl.home.comcast.net/~garbl/stylemanual/e.htm#e-mail __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Google Summer of Code 2009
Thanks for pointing out. playwith looks quite interesting
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Liviu Andronic [mailto:landronim...@gmail.com]
Sent: 19 February 2009 15:11
To: Sklyar, Oleg (London)
Cc: Simon Urbanek; Friedrich Leisch;
manuel.eugs...@stat.uni-muenchen.de; r-devel@r-project.org
Subject: Re: [Rd] Google Summer of Code 2009
On Thu, Feb 19, 2009 at 3:47 PM, Sklyar, Oleg (London)
oskl...@maninvestments.com wrote:
I do think there is a need for an interactive graphics
package for R.
There are also the GTK-based playwith, and latticist; unsure though
whether they fit your requirements.
Liviu
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Re: [Rd] Google Summer of Code 2009
Well, for the first idea, isn't it easy enough to fulfill zooming or
panning using getGraphicsEvent() in the grDevices package? For example
(using keys +/-/Left/Right/Up/Down/* to zoom and pan):
##
# a demo for zooming and panning in R graphics
# by Yihui Xie xieyi...@gmail.com Feb 20, 2009
##
# a large number of points
plot(x - rnorm(5000), y - rnorm(5000), xlab = x, ylab = y)
xylim - c(range(x), range(y))
zoom - function(d, speed = 0.05) {
rx - speed * (xylim[2] - xylim[1])
ry - speed * (xylim[4] - xylim[3])
# global assignment '-' here!
xylim - xylim + d * c(rx, -rx, ry, -ry)
plot(x, y, xlim = xylim[1:2], ylim = xylim[3:4])
NULL
}
# Key `+`: zoom in; `-`: zoom out
# Left, Right, Up, Down: self-explaining
# `*`: reset
# Press other keys to quit
keybd - function(key) {
switch(key, `+` = zoom(1), `-` = zoom(-1), Left = zoom(c(-1,
1, 0, 0)), Right = zoom(c(1, -1, 0, 0)), Up = zoom(c(0,
0, 1, -1)), Down = zoom(c(0, 0, -1, 1)), `*` = plot(x,
y), Quit the program)
}
getGraphicsEvent(onKeybd = keybd)
##
Regards,
Yihui
--
Yihui Xie xieyi...@gmail.com
Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
Mobile: +86-15810805877
Homepage: http://www.yihui.name
School of Statistics, Room 1037, Mingde Main Building,
Renmin University of China, Beijing, 100872, China
On Thu, Feb 19, 2009 at 7:38 PM, Sklyar, Oleg (London)
oskl...@maninvestments.com 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.
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
Re: [Rd] Google Summer of Code 2009
Dear Yihui,
I am sure there are many possibilities available, but I am not looking for a
hack and rather for a versatile high-quality solution. It solution should be
fast, reliable and developed to a high standard. Moreover, on my X11 RHEL5
x86_64 I get the following:
getGraphicsEvent(onKeybd = keybd)
Error in getGraphicsEvent(onKeybd = keybd) :
graphics device does not support graphics events
Furthermore, one could think of a library displaying multiple plots, for
multivariate data, allowing simultaneous zoom into all of the plots.
Dr Oleg Sklyar
Research Technologist
AHL / Man Investments Ltd
+44 (0)20 7144 3107
oskl...@maninvestments.com
-Original Message-
From: Yihui Xie [mailto:xieyi...@gmail.com]
Sent: 19 February 2009 16:20
To: Sklyar, Oleg (London)
Cc: Liviu Andronic; Friedrich Leisch; Simon Urbanek;
manuel.eugs...@stat.uni-muenchen.de; r-devel@r-project.org
Subject: Re: [Rd] Google Summer of Code 2009
Well, for the first idea, isn't it easy enough to fulfill zooming or
panning using getGraphicsEvent() in the grDevices package? For example
(using keys +/-/Left/Right/Up/Down/* to zoom and pan):
##
# a demo for zooming and panning in R graphics
# by Yihui Xie xieyi...@gmail.com Feb 20, 2009
##
# a large number of points
plot(x - rnorm(5000), y - rnorm(5000), xlab = x, ylab = y)
xylim - c(range(x), range(y))
zoom - function(d, speed = 0.05) {
rx - speed * (xylim[2] - xylim[1])
ry - speed * (xylim[4] - xylim[3])
# global assignment '-' here!
xylim - xylim + d * c(rx, -rx, ry, -ry)
plot(x, y, xlim = xylim[1:2], ylim = xylim[3:4])
NULL
}
# Key `+`: zoom in; `-`: zoom out
# Left, Right, Up, Down: self-explaining
# `*`: reset
# Press other keys to quit
keybd - function(key) {
switch(key, `+` = zoom(1), `-` = zoom(-1), Left = zoom(c(-1,
1, 0, 0)), Right = zoom(c(1, -1, 0, 0)), Up = zoom(c(0,
0, 1, -1)), Down = zoom(c(0, 0, -1, 1)), `*` = plot(x,
y), Quit the program)
}
getGraphicsEvent(onKeybd = keybd)
##
Regards,
Yihui
--
Yihui Xie xieyi...@gmail.com
Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
Mobile: +86-15810805877
Homepage: http://www.yihui.name
School of Statistics, Room 1037, Mingde Main Building,
Renmin University of China, Beijing, 100872, China
On Thu, Feb 19, 2009 at 7:38 PM, Sklyar, Oleg (London)
oskl...@maninvestments.com 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.
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
[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 __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
