similar to: AR update / create pattern: is there an easier way?

Consider: > x <- matrix(1:6, 2,3) > rownames(x) <- c("ID1", "ID2") > colnames(x) <- c("Attr1", "Attr2", "Attr3") > x Attr1 Attr2 Attr3 ID1 1 3 5 ID2 2 4 6 > write.csv(x,file="x.csv") "","Attr1","Attr2","Attr3" "ID1",1,3,5

In R-devel (svn 49628) and back to at least R 2.7.0 we get inconsistent results when attempting to attach attributes to a variable with the value NULL. If we use attributes<- it finishes but changes the value to list(). > a<-NULL > attributes(a)<-list(attr1="First attribute", attr2=2+2i) > a list() attr(,"attr1") [1] "First

Dear R experts, I would really appreciate if you had an idea on how to use more efficiently the aggregate method: More specifically, I would like to calculate the mean of certain values on a data frame,? grouped by various attributes, and then create a new column in the data frame that will have the corresponding mean for every row. I attach part of my code: matchMean <-

Hi, I have 100000 units with 10 attributes (attr1, attr2, attr3, etc...) For instance: unit attr1 attr2 attr3 ... 1 a ww 12 2 a re 11 3 b ww 09 4 c yt 02 5 a qw 02 ... I'd like to answer to the question: a) what are the most frequent combinations of attributes? b) How could I describe the relations

Ok, So, I''ve got two data tables associated through a foreign key. class Child < ActiveRecord::Base belongs_to :parent, :class => Parent, :foreign_key => "parent_id" # also has attr1, attr2 end class Parent < ActiveRecord::Base has_many :children, :class => Child, :foreign_key => "parent_id" end So, I''m trying to build the new/edit

When I use rbind() or rbind.data.frame() to add a row to an existing dataframe, it appears that attributes for the column of type "factor" are dropped. See the sample example below to reproduce the problem. Please suggest How I can fix this. Thanks, Sammy a=c("Male", "Male", "Female", "Male") b=c(1,2,3,4) c=c("great", "bad",

Hello, to implement some some kind of optimistic locking, I want to build a view, where an object is displayed together with a link containing the data of the displayed object. My first try looked something like <%= object.object_discription %> <%= link_to "action", :action => "take_action", :data => object %> this won''t work because object is of

Is there option for deleting xattr-s same as --delete for files, because it seems deletion of xattr don't sync, however it is synced when data of file change, see example below. Maybe this is a bug or maybe this is ok? System gentoo attr-2.4.32, rsync form today cvs. -- Regards Stanislaw Gruszka stasiu@sg /mnt/hda5/export $ echo "data" > file stasiu@sg /mnt/hda5/export $

Dear RGroup I have a data of the type shown below: I am trying to use lme function followed by post hoc test as given in the code below. Am I right in my model definition, given the problem data structure. in the example, i have used column names of my data frame so that it is self explanatory. library(reshape) library(nlme) library(multcomp)

Hi, I''ve started looking at ticket 90<http://merb.devjavu.com/projects/merb/ticket/90>and there are a couple of situations that the current implementation doesn''t cater for. 1. Tag Attributes are wiped out. - <tag1 attr1=''1''>Content</tag1> #=> { "tag1" => "Content" } - I think it should return -

All, My apologies if this is a little long-winded and stream of consciousness-y :). SUMMARY: Why do we extend ActiveRecord instead of mixing it in to our model classes? Been thinking about my app''s models and starting to want to build something of a hierarchy. I have some commonality across 3 of my model classes and I''d liek to aggregate the behavior in a superclass.

Thanks for your feedback David.... Yes, the intention is to support duck-typing. In my code example, a.attrB1 = 5 .... is probably more accurately stated as ..... a. attr1.attrB1 = 5 Certainly this would be an unsafe call because we would not know that attrB1 is an attribute of attr1 until runtime. I believe this type of call is valid in a language like Python. Are there any

Is it possible to create a database in MySQL via RMySQL? Also, is the format for the authorization field 'userName/password at databasename'? I saw an example like this somewhere in the documenation, but I haven't found the actual specification. Thanks, Barnet Wagman

Hello everyone, I would like to implement functionality something like the following in my sample language..... class A { Object attrA1 } class B { int attrB1 bool method methTestB ( .... ) } main () { bool test Object a a = new Class A() a.attr1 = new Class B() a.attrB1 = 5 test = a.methTestB(...) } I assume that I will need: - some type of runtime lookup table to store

Hi Strahil and Gluster users, Yes I had checked but, checked again and only 1% inode usage. 99% free. Same every node. Example: [root at nybaknode1 ]# df -i /lvbackups/brick Filesystem Inodes IUsed IFree IUse% Mounted on /dev/mapper/vgbackups-lvbackups 3108921344 93602 3108827742 1% /lvbackups [root at nybaknode1 ]# I neglected to clarify in

Hi Gluster users, We are seeing 'error=No space left on device' issue and hoping someone might could advise? We are using a 12 node glusterfs v10.4 distributed vsftpd backup cluster for years (not new) and recently 2 weeks ago upgraded to v9 > v10.4. I do not know if the upgrade is related to this new issue. We are seeing a new issue 'error=No space left on device' error

Hi,Have you checked inode usage (df -i /lvbackups/brick ) ? Best Regards,Strahil Nikolov On Tuesday, May 2, 2023, 3:05 AM, brandon at thinkhuge.net wrote: Hi Gluster users, We are seeing 'error=No space left on device' issue and hoping someone might could advise? We are using a 12 node glusterfs v10.4 distributed vsftpd backup cluster for years (not new) and recently 2 weeks ago

Hello, Arel::SelectManager (arel 2.0.9) uses following statement to insert a new record: @engine.connection.insert im.to_sql, ''AREL'', primary_key_name, primary_key_value But in DatabaseStatements insert ist defined as: insert(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) Actually, Arel::SelectManager does not use the sequence name. This leads to issues

Hi, i have a "place" model with 2 columns (id, name). I''m calling an external api which gives me data to create a new place object. I would like to add the address from the external place to the place object and render it as a json result, without storing it in the database. i don''t get any errors, but the address never shows up within the json output. i''ve

Today I just spent 3 hours (and before a demo!) trying to figure out why my polymorphic association fields were breaking. Turns out someone else put in a patch for this 6 months ago. I''m not sure if its the same solution I''d use... I''d rather find_or_create attempt to use AssociationProxy#build if its available and only Base#new if we''re not on a proxy.