similar to: order complex aggregation results in 'calculate'

Hello r-experts, I sure could us a little help. I have an ever updating text file with timestamped data in it. I can reformat in anyway I want if need be but currently I have chosen to make columns of date, time and measuresed value (comma delimeted and with the dates and times in quotes to interpret them as strings). Here is a small section of my text data file:

Hi everyone, I was trying to mode the following exercise using R. The question: Set up a one pool model using numericintegration. The model will run from time 1 to time 30 using a time step of 1.The pool (A) will be fed by flux "inA" at a rate of 5 units per hour anddrained by flux "outA" at a rate of 20% per hour. At time 0, A has 5units. At time 30, what is the pool size of

I have compiled and linked a 64 bit version of R (R 2.9.2) and the corresponding unix ODBC 64 bit package When issuing a SqlQuery, I get the following error > library(RODBC) > channel <- odbcConnect("OraLSH", <user>, <password>) > sqlQuery(channel,"select sysdate from dual") Error in .Call(C_RODBCFetchRows, attr(channel, "handle_ptr"), max,

Hello! So, I''m fairly new to Rails and I have a question that pertains to how to best model something that is typically addressed via inheritance. Here''s the situation: I need to maintain an EventLog There are several different "types" (eight at this point) of Events All Events have a couple of attributes in common (user_id, event_at, note, summary, type, etc.)

Hi,   I have a hierachical code system such as the example below (the printed data are easiest to read). I would like to write a function that returns an 'imputed' data frame, ie. where the the parent values are calculated as the sum of the child values. So, for instance, STAT.01.01.06  is the sum of STAT.01.01.06.01 through STAT.01.01.06.06. The code I have written uses two for loops,

I''m not using ferret because the search I need is not that complicated. I created a basic active record search. I''m using some code from the pragmaticprogrammer book. This is the issue: I can get the single keyword to work fine when entered into the search box, but when you put to keywords separated by a space the search returns no results. It makes sense since the function

I recently had a look at Log4Net before we decided to go with Ruby On Rails. As part of evaluating Ruby and Rails, I had a look at Log4r as well. We want to use Log4r, and we would have a logger that output all levels to console and stdout, and everything above Warn to a database table. But the deployment of log4r doesn''t come with a database outputter. Is there any reason for this?

This patch introduces support for two new parameters in libxl: smbios_firmware=<path_to_smbios_structures_file> acpi_firmware=<path_to_acpi_tables_file> The changes are primarily in the domain building code where the firmware files are read and passed to libxc for loading into the new guest. After the domain building call to libxc, the addresses for the loaded blobs are returned and

Hi, Please find the code and data following. Problem appears in lines 37 - 42 of the code. I am using R.2.13.0 on WinXP. Regards, Fayez PowerLawGraphsAblineQn.R? library('reshape') library(lattice) library(igraph) # to use power.law.fit function library(latticeExtra) # to use panel.lmlineq in loglog xyplot File2Open = "C:\\Documents and Settings\\All

Hello everybody, I am a (very) beginner in linux routing. I would like to solve in general term (the kind and amount of traffic aren''t known)this problem: A router links some client with two net across two interface. I''d like to know how should I be setting the router in this case. and how to share the traffic on the two interfaces. Like I said, I''m no expert, hope it

At the risk of being banned for posting the same question twice, I thought I''d try once more with a question for the title rather than a statement (on the basis that perhaps questions get answered and statements ignored ;-) ) ActiveRecord supports composed_of for value objects which is fantastic but one thing that it doesn''t seem to support (or at least I am unable to

Say I have a person object which has a aggregation object call address. The the code to manipulate a form for create a new person should be: # new.rhtml <% form_for :person, :url => {:action => ''create''} do |f| %> <%= render :partial => ''form'', :locals => {:f => form} %> <%= submit_tag "Create" %> <% end %>

Hi, I am trying to calculated various summary statistics using the dcast function of reshape2. This works perfectly for getting the mean, sum, length, sd. But when I want to calculate the median I get an error. I tried it with and without removing NAs: my_median <- function(x) median(x, na.rm = FALSE) median_df <- dcast(patch_stats_dfm,formula=species~input+barriers,my_median) Error in

Is there any limitations about using link aggregation (dladm)? - maximum number of link aggregation per server? - maximum number of NICs per link aggregation? Is there any documentation where I can read more abaout it? Thanks, Gustavo. This message posted from opensolaris.org

Hi, I''m getting this error: >> p = Plan.new >> p.amount TypeError: wrong argument type String (expected Fixnum) Apparently this happens because the aggregation isn''t initialized. Here''s the code: class Plan < ActiveRecord::Base composed_of :amount, :class_name => "Money", :converter => Proc.new { |s|

I have a set of evaluation variables (n) for each sample (sample size is large enough) and I am trying to use R (nnet package) to aggregate the data. However, I don't know the weight for each variable (I am sure the weight shouldn't be equally assigned). Specifically, I have 12 indices (CO2, SO2, TSP...) for 100 cities and I want to calculate weight for each and finally obtain a

Hi, there was discussion on "truncating aggregation output only" (http://www.opensolaris.org/jive/thread.jspa?messageID=19008) on DTrace forum. From what was discussed the aggregation options like aggsortrev, aggsortkey, aggsortpos, aggsortkeypos are already available (Thanks Bryan!). I am wondering what are current plans for ''aggtop'' option (or

I defined the aggregation name of first_name and last_name as recommended, works fine but I''d like to know if it''s possible (and how) to use it in a find condition .. @full_name ="Georges Washington" @person = User.find(:all , :conditions => ["name LIKE ?", @full_name"] #doesn''t run I also tried @person = User.find( :all, :conditions

Hi all. Just wanted to let people know about a small project I started over the weekend to help me keep up with news about Asterisk. http://asterisktimes.xdev.net/ Some of the other new sites are either not there anymore or slow to update, so I've come up with a different idea for keeping Asterisk news up-to date and in one place. For the moment, I call it Asterisk Times. OK, so maybe not

Further to my inquiry a while back, if any of you fine folks want to set up something like this, here is a "cookbook" to get it done. http://www.melvilletheatre.com/articles/secure-email-aggregation/ It's very convenient, and the whole thing lives on the computer under my desk so I'm not handing my life over to google or whoever, either. -- MELVILLE THEATRE ~ Real D 3D