Displaying 20 results from an estimated 1000 matches similar to: "belongs_to association doesn't work with _id set"
2008 Dec 23
1
Approximate Entropy?
Dear guRus,
is there a package that calculates the Approximate Entropy (ApEn) of a
time series?
RSiteSearch only gave me a similar question in 2004, which appears not
to have been answered:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/28830.html
RSeek.org didn't yield any results at all.
Happy holidays (where appropriate),
Stephan
2005 Apr 01
1
dovecot don't start
hi...I've a problem with dovecot 0.99.13-3 for fedora core 3. When I start
dovecot with "service dovecot start" it seems to start succesful but it is
a false message. It don't start and in /var/log/maillog I've this errors:
Apr 1 15:37:00 edim dovecot: Dovecot starting up
Apr 1 15:37:03 edim dovecot: Auth process died too early - shutting down
Apr 1 15:37:03 edim
2012 Jan 05
1
[ncdf] programmatically copying a netCDF file
How to programmatically (i.e., without no or minimal handcoding) copy
a netCDF file? (Without calling
> system("cp whatever wherever")
:-) Why I ask:
I need to "do surgery" on a large netCDF file (technically an I/O API
file which uses netCDF). My group believes a data-assimilation error
caused a data variable to be corrupted in a certain way, so I'm going
to
2009 Jul 02
8
rails hyperthreading on Quad core
Hi, my video sharing website (politube.org) that I developed with rails,
runs on lighttpd/fcgi (I know it is obsolete by now) and is severely
under load and regularly blocks because the lighttpd process chews up
50% of RAM (1GB).
So now I want to move the system to a new server with 8GB, 64bit ,
Quad core processor (intel i7 920) but I am not sure if hyperthreading
will really do anything better.
2007 Oct 05
3
Do migration support MySQL BIGINT
hi,
just wondering do migration support MySQL BIGINT ?
what if i wanna create a migration with BIGINT ? should i use SQL
directly ?
kiwi
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2009 Feb 17
8
Converting Acts_As_Tree to Acts_As_Nested_Set
Hello,
I have a tree structure that needs to be converted into a nested set.
A great deal of work has already been done on the tree items, so
maintaining the integrity of the id''s is mandatory. However I need
the ability to access entire branches of the tree, which is what
Nested set does. Does anyone have any suggestions on how to
efficiently transfer the tree to the nested set and
2004 Aug 13
5
simtest for Dunnett's test
Hi!
I use simtest fonction of multcomp package to compile a Dunnett's test.
I have 10 treatments and one control group, so i create a matrix with:
m<-matrix(0,10,11)
m[1,1]<--1
m[1,2]<-1
m[2,1]<--1
m[2,3]<-1
m[3,1]<--1
m[3,4]<-1
m[4,1]<--1
m[4,5]<-1
m[5,1]<--1
m[5,6]<-1
m[6,1]<--1
m[6,7]<-1
m[7,1]<--1
m[7,8]<-1
m[8,1]<--1
m[8,9]<-1
2009 May 26
9
cookies are mandatory for Rails app?
is it true that Rails depend on cookies? It seems that flash is a part
of session, and session uses cookies... so when i disable cookie in
Firefox, what was working became
ActionController::InvalidAuthenticityToken
so is it true that for a RoR app to work, cookies are mandatory?
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2011 Apr 29
1
Use nparcomp function from nparcomp library to run post hoc
Dear list,
I tried to use the nparcomp to run some post hoc non-parametric comparison
and got and error.
Error in uniroot(pfct, interval = interval) :
f() values at end points not of opposite sign
Appreciate any comments.
the command line:
>nparcomp(Ulceration~Group,data=test,type='Dunnett',control='Non-treated')
Jun
2008 Feb 14
1
Replacing a character string when finding substring match
Dear R-experts,
I need to replace the values of a vector(tx) with a
word ('Vehicle') when the value of the vector contains
the word 'vehicle'. Sometimes, the value could be 'MCT
vehicle', or 'control-vehicle', etc.
I tried gsub like this
treatment<-gsub('vehicle','Vehicle', tx,
ignore.case=T)
But then I end up with values like 'MCT
2008 Jul 17
4
A Mongrel parsing bug: "&" and "&"
When using url_for to send path to a script (such as with
auto_complete), multiple params are joined with the "&" code. For
example:
text_field_with_auto_complete :blog :post, {}, { :posts_path(:a =>
1, :b => 2), :method => :get }
Produces this script:
var blog_post_auto_completer = new Ajax.Autocompleter(''blog_post'',
2009 Mar 01
1
projecting GIS coordinates for analysis with spatstat package
I am working on creating an R package for doing fire department analysis and
am trying to create a function that can display emergency incident
densities. The following code sort of does the trick, but I need a display
that shows the number of incidents per square mile. I believe the code
below shows incidents per square unit (in this case, degrees lat/long).
To solve this problem, I believe
2010 Jan 28
2
dynamic drop downs for product search
Hey Everyone,
I''m about to embark on having a search function for the products on my
app via dynamic dropdowns. A dropdown for make would only leave
AVAILABLE models of that make. selecting year would only leave
available makes from that year etc etc.
Any suggestions or good read ups ?
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2011 Oct 20
3
Survival analysis
Hello,
I need some results from the survival analysis of my data
that I do not know whether exist in Survival Package or how to obtain if
they do:
1. The Mean survival time
2. The standard error of the mean
3. Point and 95% Lower & Upper Confidence Intervals estimates
Any help will be greatly appreciated.
Cem
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2006 Mar 10
9
Observers?
Hello all!
I''m having an issue with Observers, and I''m hoping someone knows the
answer.
Here is the definition:
app/models/vehicle_observer.rb
> class VehicleObserver < ActiveRecord::Observer
> def after_save(vehicle)
> breakpoint
> if vehicle.has_new_mil_indication?
> UserMailer.deliver_mil_notice(vehicle)
> end
> end
> end
2007 Aug 09
2
Rmovie on windows
Can rmovie be installed in a windows environment?
When I run "gem install rmovie".
It gives the following error:
Building native extensions. This could take a while...
ERROR: While executing gem ... (Gem::Installer::ExtensionBuildError)
ERROR: Failed to build gem native extension.
ruby extconf.rb install rmovie
''make'' is not recognized as an internal or external
2006 Mar 16
5
Multiple databases + switching databases
Hello,
I have an application that access two different DBMS - Firebird
and Postgres. So far, that''s ok. The problem is, depending on the
customer logged, a different database (Firebird) must be selected.
To make the things clearer:
Postgres: 1 database shared by all customers with these tables:
- user
- vehicle
- driver
Firebird: several databases with different names and identical
2006 Aug 10
3
How to serialize a symbol coming from a Form
Hello, I would like to use serialized symbols as values for select in
forms.
eg.
class Vehicle < ActiveRecord::Base
@@statuses = {:wait => ''No yet'', :ok => ''Run run run''}
validates_inclusion_of status, :in => @@statutes.keys
Serialize status, Symbol
def self.statuses
@@statuses
end
end
Then, I can use Vehicle.statuses.invert to
2017 Aug 10
4
PROC MIXED RANDOM equivalence in R nlme
I am trying to reproduce some old SAS PROC MIXED code using R and nlme.
The data consists of emission readings from vehicles and fuel
properties. All variables are real numbers except "study" and "vehicle",
which are character. Unfortunately, since the data are confidential, I'm
unable to provide an example.
The original SAS v6.12 code is provided below:
2010 May 03
2
Hierarchical factors
Hello,
Hierarchical factors are a very common data structure. For instance, one
might have municipalities within states within countries within
continents. Other examples include occupational codes, biological
species, software types (R within statistical software within analytical
software), etc.
Such data structures commonly use hierarchical coding systems. For
example, the 2007 North