search for: orme

Hi, Does anyone know of an R ORM (Object Relational Mapper)? I'm thinking of something similar to sqlalchemy (http://www.sqlalchemy.org/). Alternatively or additionally, can people offer suggestions about managing relational databases from R. I'm currently using postgresql, but would like a flexible solution that works across different databases, hence the enquiry about ORMs. Please

Hi, I was just wondering what levels of success people have had with other ORMs. Why did you use another ORM?.. and what benefits did it provide over ActiveRecord and others? Did it integrate well with rails? Thanks, Chris -- Posted via http://www.ruby-forum.com/.

The rms ("Regression Modeling Strategies") package has undergone a massive update. The entire list of updates is at the bottom of this note. CRAN has the update for linux and will soon have it for Windows and Mac - check http://cran.r-project.org/web/packages/rms/ for availability. This rms update relies on a major update of the Hmisc package. The most user-visible changes are:

I''m a Django/Catalyst user that''s evaluating Rails ... I need a Ruby framework, and I''m trying to see if learning Rails is worth it or I should just go for Sinatra + various libs available. Django has a couple of things I like ... 1) the Forms API In Django I like that it''s being decoupled from models ... form objects have fields with validation rules that

Daniel, Tobias, Renato and myself have been looking a little bit at the potential underlying reason for why http://llvm.org/perf/ is instable, and have found some clues. I want to share them here to give people with more experience in the frameworks used by LNT (flask, sqlalchemy, wsgi, .) a chance to check if our reasoning below seems plausible. Daniel noticed the following backtrace in the

On 02/16/2020 10:47 PM, Bee.Lists wrote: > Sequel ORM > > >> On Feb 16, 2020, at 7:28 PM, H <agents at meddatainc.com> wrote: >> >> I am looking for an open-source SQL modeling tool to use with MySQL, MariaDB and PostgreSQL. Does anyone have a favorite? > > > Cheers, Bee > > > > > _______________________________________________ > CentOS

Hello Railists, I have a piece of Ruby on Rails code that has a complex SQL query (well, not that complex, but as far as I know beyond the ORM capabilities) and for my taste it has too many strings and harcoded values. I''d like to improve it as much as possible, so my question is open ended, what else can I do to improve it? Some particular issues I have - Is there a way to get a table

Quick question on this query: @item.entries = Entry.find_recent(@td.id, 10) || [] My development log file shows that rails makes 2 calls to database! Is rails ORM not smart enough to know to not load the lvalue of assignment thus causing another expensive db call? Below are the stubbed models and a log snip. class Entry < ActiveRecord::Base belongs_to :tracking_definition def

Hi, I got caught out by this behaviour in 1.8.0 and I wondered why this happens: I have a list of vectors and was using lapply and grep to remove matched elements that occur in only a subset of the elements of the list: locs <- lapply(locs, function(x){x[- grep("^x", x)]}) The problem is that where the grep finds no matches and hence returns a vector of length 0, all the

...intercept from lm(y ~x) but the linear model still returns an estimate of the intercept of the first segment. I can't work out what the syntax for the formula should be. Is it possible in one step or do I have to fit the two lines as two models? Any suggestions? Thanks in advance, David Orme > R.version _ platform ppc-apple-macos arch ppc os MacOS system ppc, MacOS status major 1 minor 5.0 year 2002 month 04 day 29 language R -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://w...

...for(components in 1:length(x)) store <- c(store,length(x[[components]])) > store [1] 3 4 2 5 I know it's only two lines of code. I guess I'm wondering whether there is something that does what I'd expect from length(x[[1:4]]) if [[i]] allowed multiple indices. Thanks, David Orme. -- --------------------------------- David Orme Ph.D. Student - Macroevolution and diversity. Department of Biology, Imperial College, Silwood Park, Ascot, Berkshire. UK. SL5 7PY Phone: (020) 759 42446 (wk.) (01344) 891539 (hm.) E-mail: d.orme at ic.ac.uk -------------- next part ----------...

http://technocrat.net/d/2006/6/30/5032 article mentions RoR...

Hello. I''d like to put all my data model classes into a module to avoid name clashes with other classes. However, when I do so, I get a superclass mismatch error. My class hierarchy for the class in question looks like this: class ViewCTI < ActiveRecord::Base end module ORM class Molecule < ViewCTI end end I load the model classes from the ApplicationController class

Hi people, just thought I''d mumble out my thoughts on merb''s apps directory structure and config concepts and see what other people are feeling... the app dir: mvc/application is layed out as expected....maybe without the mailer by default (another discussion) the config dir: I really think that it''s confusing to have such a mixture of ways to configure some

Since Ajax doesn''t support file uploads, I''m using "IFRAME remoting made easy" (http://sean.treadway.info/). I''m saving a file to the filesystem, and then trying to put it in to the database when I do the final submit with ajax. I thought picking the file up and putting it in the db would be as easy as having: "@image.data =

...iest way but I wondered if there was a neater/faster solution. mylist.len <- length(mylist) ind <- 1:mylist.len result <- array(NA, dim=c(mylist.len,mylist.len)) for(x in ind){ for(y in ind){ result[x,y] <- sum(mylist[[x]][test[[x]] %in% test[[y]]]) } } Many thanks, David Orme

...Darwin 6.8) installed and R 1.8.0 installed from source and I have updated RODBC to 1.0-4. On the ODBC manager end, I am using OpenLink software's iODBC Administrator and I've set up a User DSN called "PostGRES" - odbctest suggests that this is functioning: > [doibook:~] dorme% /usr/bin/odbctest > iODBC Demonstration program > This program shows an interactive SQL processor > > Enter ODBC connect string (? shows list): dsn=PostGRES > > Have a nice day. > [doibook:~] dorme% However, when I try to access the connection from R I get the following: &gt...

Guys, I''m designing an application currently that will ultimately be implemented in either Rails or php5 (most likely Rails). While I''ve coded many PHP (pre-5) applications in the past, OO support was so weak that my OO designs were never truly divorced from the limitations of the language, thus I never had to consider this problem. The question is: how does Rails (and how do

...ror are associated with the following message: > dyld: g77 version mismatch for library: /sw/lib/libiconv.2.dylib > (compatibility version of user: 4.0.0 greater than library's version: > 3.0.0) Can anyone help? Many thanks, David --------------------------------------- Dr. David Orme Department of Biological Sciences Imperial College London Silwood Park Campus Ascot, Berkshire SL5 7PY UK. Tel: +44 (0)20 759 42358 Fax: +44 (0)20 759 42339 e-mail: d.orme at imperial.ac.uk

Full_Name: David Orme Version: 1.4.0 OS: Mac OS 9.1 Submission from: (NULL) (155.198.17.121) R crashes (politely and without further repercussions) with a type 3 error under the following conditions: Open more than one macintosh() graphics device: > macintosh() > macintosh() and hence there are two devices......