similar to: Summer student internship placement at University of York / YCCSA / SEI (paid)

Dear All, The Decision and Policy Analysis (DAPA) program of the International Center for Tropical Agriculture (CIAT), a not-for-profit agriculture, biodiversity and ecosystems research center, supported by the Consultative Group of International Agricultural Research (CGIAR), with headquarters in Cali, Colombia is looking for a visiting researcher to work on various modeling projects, primarily

It's not too early for statistically-adept students to think about underpaid, but life-altering, internships for the summer of 2012. In fact, after November 1st it may be too late to apply here at Barron's. This will be the second summer we've offered paid internships, which means that applicants can now poll the hapless folks who interned this past summer. Contact me, Bill Alpert, and

I am using nls to fit a non linear function to some data. The non linear function is: y= 1- exp(-(k0+k1*p1+ .... + kn*pn)) I have chosen algorithm "port", with lower boundary is 0 for all of the ki parameters, and I have tried many start values for the parameters ki (including generating them at random). If I fit the non linear function to the same data using an external

SCHOOL OF COMPUTING University of Teesside Fully funded University Ph.D. studentship (3 years) Ref: QinOCT11 Applications are invited for a Ph.D. student to work on program analysis and software verification or a closely related topic under the supervision of Dr. Shengchao Qin in the School of Computing in Teesside University. Dr. Qin currently has a number of postdoc and Ph.D students in his

*Paid internship "web application development with R"* The main skills for this proposed paid internship are: R, Shiny, and components used by Shiny (plotly, javascript). Other skills (Debian, Docker, CKAN...) are useful. This internship offer is part of a partnership between the Grenoble Alpes Cybersecurity Institute and the CYBIS project. The *Cybersecurity Institute* aims to

Dear friends, what is this error message in gam???? I cannot understand what it means .... is it a bug? gam_bray_scot24_pc_0505<gam(bray~s(PC1,PC2,PC3,PC4,PC5, PC1.1,PC2.1,PC3.1,PC4.1,PC5.1),data=dist_scot24_vector_with_climate) Error in if (length(data) != vl) { : missing value where TRUE/FALSE needed Calls: gam ... smooth.construct -> smooth.construct.tp.smooth.spec -> array In

I'm trying to diagnose a bizarre problem in which the help files invoked from R are partially defective. help(), for instance, is missing the Description, Arguments and See Also sections; as are help files for other commands (see below). I've built 2.8.1, 2.10.1 and HEAD with the same results; do I need to set an environment or configuration variable? help

We're seeking interns for the summer of 2014 here at Barron's the Dow Jones newsweekly that's searched out good investments and financial frauds since 1921, when our founder exposed Charles Ponzi. We're at the center of the financial world in New York and can pay a bit of a stipend to cover the city's high living costs. Here's the blurb: Do some good. Intern at

Dear list, I have a strange requirement .... I have a vector, for example v<- c(0,0,0,0,1,2,4,6,8,8,8,8). I have a value,for example x<- 4.8. I would like to understand in which sub interval of v is x. In this case, v would be in the sub interval [4,6] that is in the subinterval starting from element j=7 to the element j+1=8. Can we do that with an R command? Regards -- Corrado Topi

Dear friends, I am testing glm as at page 514/515 of THE R BOOK by M.Crawley, that is on proportion data. I use glm(y~x1+,family=binomial) y is a proportion in (0,1), and x is a real number. I get the error: In eval(expr, envir, enclos) : non-integer #successes in a binomial glm! But that is exactly what was suggested in the book, where there is no mention of a similar warning. Where am I

Dear R-friends, How do you test the goodness of prediction of a model, when you predict on a set of data DIFFERENT from the training set? I explain myself: you train your model M (e.g. glm,gam,regression tree, brt) on a set of data A with a response variable Y. You then predict the value of that same response variable Y on a different set of data B (e.g. predict.glm, predict.gam and so on).

Dear friends, Do you know how to calculate the CONCAVE hull of a set of points (2- dimensional or n-dimensional)? is that possible in R? (With a "smoothing" parameter of course). Best, -- Corrado Topi Global Climate Change & Biodiversity Indicators Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk

Dear friends, I have to use a very large matrix. Something of the sort of matrix(80000,80000,n) .... where n is something numeric of the sort 0.xxxxxx I have not found a way of doing it. I keep getting the error Error in matrix(nrow = 80000, ncol = 80000, 0.2) : too many elements specified Any suggestions? I have searched the mailing list, but to no avail. Best, -- Corrado Topi Global

Dear R-list, Realising the importance of updating the R base, I tried to compile the source file of R2.2.1 in my machine, but failed. According to "R for Mac OS X FAQ", i've got the basic dependencies which are gcc 3.3 and g77 3.4. ./configure is fine Here are the errors I got from make: >make ... gcc -I../../src/extra/zlib -I../../src/extra/bzip2 -I../../src/extra/pcre

Dear R-list, I'm struggling installing RGtk2 on my Mac. Has anybody succeeded in doing so? I've got Gtk2.8 (finally) and I have R2.0.1 I'm using ibook G4 and Mac 10.3.9 and here is the error I got from installing > R CMD INSTALL ~/Desktop/install/RGtk2_2.8.0-0.tar.gz * Installing *source* package 'RGtk2' ... checking for pkg-config... /sw/bin/pkg-config checking

Dear R list, I just obtained a negative AIC for two models (-221.7E+4 and -230.2E+4). Is that normal? Regards -- Corrado Topi Global Climate Change & Biodiversity Indicators Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk

Hi, I've been planning to develop a support for tunneling between "local_tcp => server_AF_UNIX". This way, every user of server machine, can have: 1. personal address space (if socket is located on personal directory). Currently one must check assigned local port every time starting a server (e.g. vncserver), and redirect a local port to "random" remote port. 2. Added

More Scholarships are posted at http://cambodiajobs.blogspot.com ** *National University of Ireland* *Institute of Microelectronics and Wireless Systems* - Masters/PhD Scholarship in Software Defined Radio Systems - Masters/PhD studentship in the area of Spectrum Sensing for Cognitive Radio - Masters/PhD studentship in the area of Spectrum Sensing for Cognitive Radio and -

Hi List, Does any one know what package I need to use in order to fetch/get a large sized dataframe from SQL? I have already used sqldf package which is good for fetching large sized csv files. Thanks Alireza [[alternative HTML version deleted]]

Hi all, Working with S4 object, I definine two class foo1 and foo2. I define '[' (resp. '[<-') for the two classes. Then I define a third class foo3 that inherit from both foo1 and foo2. Is there a way to make '[' (resp. '[<-') for foo3 inherit from '[' (resp. '[<-') for foo1 and foo2? Thanks Christophe