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Hi there, My startup, Matygo, is running our second live Rails for Beginners course starting next week. This course is for people who are new to Rails, or have yet to dive in, and want to get a head start getting up to speed. Registration Link: http://bit.ly/matygo-rails-beginners-jan-2012 Our classes are fully online but are quite interactive. This is how it works: 1. Weekly live group video

giving a simple model, with a serialized Array attribute class Instructor < User .. serialize :languages, Array I am looking in defining scopes like this : >scope speaking_english, lambda { where("languages ... includes.... ?", :en) } which look for instructors in which the languages array include ":en" Is this kind of scope possible ? or not.... ( just using query ) thanks FYF ( For Your Feedback) -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send...

...this correctly, though I am not sure if a response will be posted somewhere or if I will get a direct response. I am trying to import a .txt table in my class on R and for some reason, the header gets altered and I can no longer read the data. No one in my class had this problem and the instructors were not sure how to fix it. Here is the text table: Kind Fatness Wt Ewe 4 10.3 Ewe 8 11.9 Ewe 11 15 Ewe 15 17.1 Ewe 15 18.7 Ram 5 12.4 Ram 4 14.3 Ram 10 16.6 Ram 8 18.8 Ram 14 21.9 Here is the code that I copied from the instructors handout (simple cut and...

..., TERM is a factor that gives the quarter and year a course was offered, GRADE is a 0-4.3 grade and INST is the instructor, again as a factor. Course offerings are determined by the TERM and INST. That is one inst. assigned grades to all the students they were responsible for that term. Multiple instructors may have taught the same term. For every course offering I would like to normalize the GRADE: Z<- (GRADE - mean)/SD where the mean and SD are over a single course offering. Thanks! RBL [[alternative HTML version deleted]]

I want to populate one table in a DB from another table so that the user does not need to enter the same information twice. I have a registration table that is populated when a user creates an account. Later I have a form that uses a different table, but contains most of the same info as the registration table. I would like that table to be prepopulated by the registration table before the user

Hello R users, I have a basic "computer programing" question. I am a student currently taking a course that uses Fortran as the main programming language, but the instructors are open to students using any language they are familiar with. I have used R previously, and am wondering if there is any benefit to my learning Fortran, or whether I should stick with R for this class. Any advice? Are there clear benefits to using Fortran, or things Fortran can do that R cann...

Hi all, My data genes [,1] [,2] [,3] [,4] [1,] 25 72 23 55 [2,] 34 53 41 33 [3,] 26 43 26 44 [4,] 36 64 64 22 [5,] 47 72 67 34 stu<-t.test(genes[,1:2],genes[,3:4]) > stu$p.value [1] 0.4198002 i get 1 pvalue for the entire col1:col2 Vs col3:col4. I am trying to get 5 p values for the 5 rows i have. I am trying to avoid a for loop coz my

I am pleased to announce the newest release of Locomotive! http://locomotive.sourceforge.net Mostly a bug fix release. If you are using Locomotive on 10.4 you should definitely upgrade. New in 0.2.4 ============ * Rename application entries in status window * Run/Restart/Stop buttons now immediately update * Bundle choosing is fixed for Mac OS X 10.4 * Missing gem dependencies in Rails 0.13.1

I'm trying to overlay a density plot on a previously plotted histogram. However, i need to use the same axis as of the 1st(histogram) plot to plot the second. My second plot is creating its own axis and causing my plot to extend the entire histogram instead of getting a subplot on a portion of the histogram. I tried 'fig' and 'new' parameters with no luck. Thanks in advance.

I've got 20 windows desktop machines in a lab on a samba network. Throughout the semester instructors usually find some software they want installed. Has anyone come up with a good way to push out files to all these machines? I've seen demos of software management in Windows 2003. Or any inexpensive commercial product for software management for networks that are not Windows AD? I think I'...

Hi. > a [1] 13 13 14 14 15 15 16 20 21 26 > summary(a) Min. 1st Qu. Median Mean 3rd Qu. Max. 13.0 14.0 15.0 16.7 19.0 26.0 > mean(a) [1] 16.7 > quantile(a) 0% 25% 50% 75% 100% 13 14 15 19 26 Clearly, this is not right. My Instructor and I have no idea why the program does that. I removed the program from the computer , installed it

I am possibly going to be sent for my RHCE training. Looking at https://www.redhat.com/courses/rh300_rhce_rapid_track_course_and_rhce_exam/details/ I am thinking the concepts do not look difficult at all, having a manual and instructor makes this look fairly easy actually. The only thing that looks important to take outside of this would be rh253 if I wasn't interested in taking the

Here's another help file question. Some context: University setting wherein R is installed for availability to students and course instructors across campus in various PC labs. Windows Vista environment. Goal: To maximize flexibility and functionality of installing add-on packages and associated help files among different users, while avoiding conflicts across different user libraries. (I could have my difficult-to-access sysad...

Hello all, I am very happy to announce that registration for my new course entitled "Ruby on Rails Development" at my college is now open. We are offering this course as part of our LAMP certificate which is designed for working professionals who want to upgrade their skills. I think that it is a sign of Rails'' growing maturity that I was able to propose this and work it

Hi, my vector V<- c(1,0.5,0.06,0.056,0.01,0.04,0.4,0.9,0.82,0.1) if( V > 0.5) { V <- 1 - V } I get a warning saying only the first element will be used in comparing (if V > 0.5). However, my results tell me vis-versa ,it actually compares every element of the vector V with 0.5 and that is waht i want it to do. Using a for loop is expensive and time consuming since my actual

To all moderators i guess, my question was probably not clear this is not a homework, i am trying to understand R by doing some exercise in my book. I will however participate a course in R in august and thought it could be good to have some knowledge before. I hoped for help from you since i have no instructor to ask, that would have been my first choice. thanks anyway Lotta

I am taking a behavioral stats graduate class and the instructor is using SPSS. I'm trying to follow along in R. Recently in class we started working with scales and survey data, computing Cronbach's Alpha, reversing values for reverse coded items, etc. Also, SPSS has some built in functionality for entering the meta-data for your survey, e.g. the possible values for items, the text of

Yeah, that was what I heard from our instructor when I was a graduate student: L stands for Long (integer). Regards, Yihui -- https://yihui.name On Fri, Jun 16, 2017 at 11:00 AM, Serguei Sokol <sokol at insa-toulouse.fr> wrote: > Le 16/06/2017 ? 17:54, Henrik Bengtsson a ?crit : >> >> I'm just curious (no complaints), what was the reason for choosing the >> letter

I am investigating changing our broadband bandwidth control scripts over to HFSC. What I would like to accomplish is this: { * DOWNLOAD * I need a download class for each user (we''ll call it Class 1) that offers a minimum of lets say 384Kbps and a maximum of 1.5Mbps. The rates between 384Kbps and 1.5Mbps should be shared among all users. Each user should always be able to get at

Hi, If I load 2 packages that have a function with the same name, how do I tell R to run one or the other? (Instead of having R automatically use the first- or last-loaded one, whichever it is. (Which is it, by the way.)) Cheers! Nick -- ==================================================== Nicholas J. Matzke Ph.D. Candidate, Graduate Student Researcher Huelsenbeck Lab Center for