similar to: plot and factors

Dear R-helpers, New to R, I'm in the middle of a project that I'm using to force me learn R. I'm running into some behavior that I don't understand, and I need some advice. In the last week I've gotten some great advice from the list on visualizing my data, and I was hoping people could help me get over another barrier I've encountered to my progress. Before I

Hello everyone, I am new to R, using version 2.0.1 on a Macintosh running OS X 10.3. I am learning how to export graphics to postscript format using the postscript() function, but R is only writing empty files. Yesterday, postscript() was working for me. Today, I don't know what's wrong. Can somebody suggest some things that might fix this problem? Thanks in advance for you help.

Dear R Users, I'm very very interested in learning how to use R to carry out a classification of data using discriminant function analysis. I've found the MASS package and the lda function, but the examples in the help system are a bit over my head. I'm not exactly sure how to interpret the output, for example, of if the inputs I've chosen are best suited to my needs. I

Dear R People: I'm not sure if I should be asking here or R-devel, but here goes: Will there be a new version of R coming out in the next few weeks, please? I'm setting up for the spring semester and want the students to have the latest version. Thanks very much, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of

It seems that using a join model that joins with two has_many''s will fail to generate proper SQL class StudentSemesterRecord < ActiveRecord::Base belongs_to :semester has_many :discipline_records, :through => :semester end class Semester < ActiveRecord::Base has_many :student_semester_records has_many :discipline_records end class DisciplineRecord <

Dear R People: I will be teaching an undergraduate Design of Experiments class in the Spring Semester. It will be very much an applied course. My question, please: has anyone used R for a course like this, please? I've tried Rcmdr for a regression course and just plain command line for a time series course. Should I use Rcmdr, or teach them to use the command line, OR is there something

I have an app with the following models: course belongs_to :semester semester has_many: courses belongs_to :education education has_many :semesters In my old app (rails 1.2.6) I was able to access variables via controller @courses = Course.find(:all) view file: <% for course in @courses %> <%= course.name %> <- this line works <%= course.semester.name %> <- this is now

I noticed that the 3.2.1 release cycle is about to start. Is there any chance that this fix will make it into the next version of R? This bug is fairly serious: getting the wrong variance estimate leads to the wrong log-likelihood and the wrong AIC, BIC etc, which can and does lead to suboptimal model selection. If it's not fixed, this issue will affect every student taking our time series

Hi, I am a graduate student in computer science.I have taken a programming languages course this semester and I am having great fun building interpreters.I am planning to build toy compilers in the winter.I would love to participate in GSOC 2016 contributing to LLVM.Could anyone let me know desirable skills should be developed to contribute to LLVM ? Also I would like to know the open projects

Hi all, I am having problems running a logon script from a Winxp pro client. It appears that the logon script is not being run at all. Win98 runs the script fine, but none of the Winxp pro clients are currently running it. I am running RedHat 7.1 with Samba version 2.2.7-security-rollup-fix. My smb.conf is as follows: [global] netbios name = LOKKI server string = Lokki PDC

On 21 May 2015, at 10:35 , Martin Maechler <maechler at lynne.stat.math.ethz.ch> wrote: >> >> I noticed that the 3.2.1 release cycle is about to start. Is there any >> chance that this fix will make it into the next version of R? >> >> This bug is fairly serious: getting the wrong variance estimate leads to >> the wrong log-likelihood and the wrong

I have a data frame that has columns Semester, Student ID (SID), Subject, Grade, Devel (Tor F). Students can have multiple records within a semester. Right now, the columns are not considered factors. I want to do an analysis that would show the number of students who received particular combinations of grades. I also need to distinguish between the two Development levels (they modify classes,

Hi, I've had a stable Samba-run LAN, with some active shares, for several months, with my PC and laptop also gaining access to the Internet through the Samba server. However, this morning, when I booted up my Samba server, I had no LAN--neither my PC nor my laptop could connect to any share. However, both still had access to the Internet. I confirmed that smb, named, winbindd, et al.,

Test =) soddsjbmshdwqwu -- Test, yep.

Dear colleagues, particularly academic ones, So I'm creating a Microsoft Word template for myself so that every time I teach a new course, I don't have to enter in the dates manually for each class session. I'd like to use an R script that can generate an irregular series of dates starting from one date (semester begin) to another (semester end) using an irregular interval in

Hi All, I'm taking an Experimental Design course this semester, and have spent many long hours trying to coax the professor's SAS examples into something that will work in R (I'd prefer that the things I learn not be tied to a license). It's been a long semester in that regard. One thing that has really frustrated me is that lme has an extremely counterintuitive way for

Dear R People: Are your undergraduate students receptive to learning R, as a rule? Most of the time, mine really like it. But this semester, they act as though they are being eaten by rats when learning R. They are not trying at all. Any similar experiences? If anyone has any good ideas, I would be THRILLED to hear them, as I am using R in Summer School. Thanks, Sincerely, Erin Hodgess

Hi all, It was brought to my attention that the front page lists 0.23.3 as the stable release, but that no such release exists. I could have sworn I released this a few weeks ago, but now I can find no evidence of that. I''m going to publish it from the latest commit in the 0.23.x branch as soon as possible (probably in about 12 hours), so if anyone wants to get that last-minute

Hi R People! I'm going to be putting together a completely online undergrad business stats course (a second semester course) and was going to use R and Rcmdr. My question: has anyone else used R for an online course, please? If so, did it go well, please? Thanks in advance, Sincerely, Erin -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University

Help ! I am a graduate student in statistics, nearing the end of my first semester, and recently discovered R, but cannot figure out how to install it on my Mac. I am currently running OS 10.1.1, and know next to nothing about Unix or anything related. I would like to install this program on my Powerbook, as it come highly recommended, so I can use it for a class next semester. Any help