Displaying 20 results from an estimated 100000 matches similar to: "ruby array detect non linear data"
2008 Dec 04
2
Ruby fun with MegaMillions
I thought I would write a lottery number generator since I have not had any
luck winning the big jackpot - http://megamillions.com/. So far, after over
1.2 million tries, I still have not hit all the numbers from yesterday: 2,
17, 22, 32, 51, 35 (last one is the mega ball).
Fun little project that and I thought others would be interested. Let me
know if you have a cleaner implementation in mind.
2007 Nov 29
3
Strange Array behaviour
I''m having a strange thing when using the Enumerable extensions for
Rails:
Have a look at the following code:
class Invoice < ActiveRecord::Base
has_many :invoice_lines
def total
invoice_lines.sum(&:total)
end
end
class InvoiceLine < ActiveRecord::Base
belongs_to :invoice
def total
amount * price
end
end
Now, when calling invoice.total, I get wrong
2007 Dec 11
2
Patch 10463: has_many through using uniq does not honor order
Hi,
I''ve just submitted a patch for ActiveRecord;
http://dev.rubyonrails.org/ticket/10463
The patch includes new fixtures because I could not find a applicable
combination among the existing fixtures. I hope that''s okee.
Please +1 or comment it.
Thanks,
Remco
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2008 Dec 13
2
Need Help in converting php encryption decryption code to ruby on rails
Hi guys i found this encryption decryption in php and try to convert
it in rails but i am unable to successfully convert it. So plz help
me. I you write the whole conversion code then it will be great.
PHP code is like this
================
#
#/**********************************************
#**
#** MD5 block cypher
#**
#** Author..: leapinglangoor [
2009 Jan 21
3
Nested serialization with to_json and to_xml with array and hash element
Title: Nested serialization with to_json and to_xml with array and
hash element
class Person < ActiveRecord::Base
has_one :address
has_one :job
def office()
return "Executive_Suite"
end
end
class Address < ActiveRecord::Base
belongs_to :person
end
class Job < ActiveRecord::Base
belongs_to :person
has_one :paygrade
def Title
return "Engineer"
end
end
2009 Jan 31
9
Maxima and Ruby Integration
I''m looking to write a javascript heavy clientside program with a
something serverside backend that connects to the free maxima math
program. I have extensive knowledge of ruby on rails, so I would prefer
to call Maxima with ruby, but I don''t know if this is even possible. Its
fairly easy to call Maxima (with a lisp implementation) using ANSI C, it
is a little less easy to
2009 Apr 12
4
Can't get an Array function to be visible inside ApplicationHelper
Folks,
I seem to be missing something basic here.
I am trying to call a function from my application layout that will
return me a hash of the roles for the user currently signed in. Here
is the simplified code I have in ApplicationHelper module
class Array
def to_h
Hash[*enum_with_index.to_a.flatten]
end
end
def get_cur_user_roles
["school_admin",
2006 May 27
3
Saving an Array to MySQL... data changes...
I have a multiple select menu:
<%= select_tag ''resume[employer_1_industry][]'',
options_for_select(industries_helper, @resume.employer_1_industry),
:multiple=> true %>
It produces this HTML:
<select id="resume[employer_1_industry][]" multiple="multiple"
name="resume[employer_1_industry][]">
<option value="">-
2007 Jul 31
1
RXML: <ruby:put expr="1+2"/>
Hello
railers,
I''ve always been annoyed by the fact that ERB doesn''t respect XML
specs.
As I mostly write XHTML, I''m trying to write a renderer using only
valid
XML files. Here is an example of a file so you get the feeling of
what
it''s going to
do:
<?xml version="1.0" encoding="utf-8"?
>
<html
2006 Dec 05
4
has_many with :uniq not working for me
Hi all,
I have a relationship (no really!)
class RiskMatrix < ActiveRecord::Base
has_many :severities, :order => :position, :uniq => true
end
class RiskFactor < ActiveRecord::Base
belongs_to :risk_matrix
validates_presence_of :descriptor, :example
validates_uniqueness_of :descriptor, :example, :scope=> :risk_matrix_id
end
class Severity < RiskFactor
2007 Dec 09
4
Help on drying code
Hi all,
Currently I''m having to do this:
def self.authorized_roles(controller, action)
specific = self.find_by_controller_and_action(controller, action)
all_actions = self.find_by_controller_and_action(controller, ''*'')
all_controllers = self.find_by_controller(''*'')
role_ids = []
specific.each do |role_item|
role_ids <<
2016 Apr 08
4
Generating random data with non-linear correlation between two variables
Hi All,
I am new to R and don't know how to achieve it.
I am interested in generating a hypothetical dataframe that is consisted of say two variables named v1 and v2, based on the following constraints:
1. The range of v1 is 500-1500.
2. The mean of v1 is say 1100
3. The range of v2 is 300-950.
4. The mean of v2 is say 400
5. There exists a positive trend between these two variables, meaning
2008 Jan 01
7
in_vertical_groups_of
Hi all,
Here''s another contribution for anyone interested.
In Railscast episode 28, Ryan Bates showed us in_groups_of which
allows you to group array members such as
>> list = [1, 2, 3, 4, 5, 6, 7]
=> [1, 2, 3, 4, 5, 6, 7]
>> list.in_groups_of(3)
=> [[1, 2, 3], [4, 5, 6], [7, nil, nil]]
This allows you to iterate over the groups and, for example, display
a list
2006 Nov 26
5
associations help?
I have Users who can "own" Projects. There is only one owner. Users in
general can be authorized to view certain projects. Here is my initial stab
at this:
class User < ActiveRecord::Base
has_many :projects # ownership
has_many :project_viewers, :dependent => :destroy
has_many :projects, :through => :project_viewers, :uniq => true
...
end
class
2016 Apr 09
1
[FORGED] Generating random data with non-linear correlation between two variables
On 09/04/16 06:57, Muhammad Bilal wrote:
> Hi All,
>
> I am new to R and don't know how to achieve it.
>
> I am interested in generating a hypothetical dataframe that is consisted of say two variables named v1 and v2, based on the following constraints:
> 1. The range of v1 is 500-1500.
> 2. The mean of v1 is say 1100
> 3. The range of v2 is 300-950.
> 4. The mean of
2016 Apr 09
0
[FORGED] Generating random data with non-linear correlation between two variables
No its not. I am doing all these experiments for my own learning purpose. I am Oracle SQL & PLSQL programmer and I can do these things with Oracle analytical functions.
However at present I am keen to learn R, with no other interest right now.
Thanks
--
Muhammad Bilal
Research Assistant and PhD Student,
Bristol Enterprise, Research and Innovation Centre (BERIC),
University of the West of
2008 Aug 31
9
assigning collection values and exceptions
hi everyone,
I''ve this code in my Report model:
has_many :report_reasons, :validate => true
has_many :reasons, :through => :report_reasons #, :uniq => true
# :accessible => true
def reason_attributes=(reason_attributes)
reasons.clear
reason_attributes.uniq.each do |reason|
reasons << Reason.find_or_create_by_content(reason)
end
end
2016 Apr 09
0
[FORGED] Generating random data with non-linear correlation between two variables
The goal is to test a developed model against two sets of hypothetical data, where the relationship between on data set is linear whereas non-linear (e.g., polynomial) with another. However, the distributions of the v1 and v2 should not be other than normal or slightly positively skewed or slightly negatively skewed.
In Oracle, random data is generated with packaged function
2008 May 12
3
Enumeration sum
Any idees why I can do this:
@sum = @selected.inject(0) { |sum, player| sum + player.value }
but not this:
@sum = @selected.sum { |player| player.value }
@sum = @selected.sum(&:value)
The last two give me following error:
wrong number of arguments (1 for 2)
/Library/Ruby/Gems/1.8/gems/activerecord-2.0.2/lib/active_record/associations/association_collection.rb:164:in
`calculate''
2008 Oct 07
6
Hpricot loop question to read table row values
Hi.
I''ve got a file that contains a table that looks like this:
<table>
<tr><td>column title a</td><td>column title b</td></tr>
<tr><td>row 1 a</td><td>row 1 b</td></tr>
<tr><td>row 2 a</td><td>row 2 b</td></tr>
<tr><td>row 3 a</td><td>row 3