Displaying 20 results from an estimated 2000 matches similar to: "getting the value from previous row"
2006 Sep 22
1
url_for params
Hi,
url_for has a nice way of using the current ''params'' object to fill in default
parameters in a route. For example,
map.connect '':controller/:action/:id/''
with <%= url_for :action => ''my_action'' %> will redirect to the current
controller. All very good.
However, I sometimes want a url_for() which includes current parameters
2011 Nov 30
3
how to call a function for each row
Hi
I have a data-frame which look like this
X1 X2 X3
1 3 5
2 4 6
3 6 1
I want to apply a formula Y=6*X1 + 7*X2 + 8*X3 for every row
Thanks in Advance
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2006 Mar 02
3
merge with symbol problem
Hi,
It''s a little bit annoying to me, I can''t understand the following:
If I merge a value to the params hash with:
params => params.merge :value => new_value
the params[:value] doesn''t change, but if I use string instead of a
symbol like:
params => params.merge "value" => new_value
it works.
Somebody plz tell me why...
Abbath
2007 Jun 26
1
ActiveRecord: Attribute Setter for belongs_to relation attribute
Hi,
I m trying to link into the process of setting an belongs_to attribute
in my model. Unfortunetly, it does not seem to be as easy as for
"normal" attributes.
I ve tried the following:
class Treatment < ActiveRecord::Base
belongs_to :drug
def drug=(new_value)
''my stuff
super new_value
end
However, that does not work. Ive also tried self[:drug] =
2018 Apr 11
1
[PATCH] v2v: linux: correctly update resume=/dev/device entries (RHBZ#1532224)
When updating the device names to the new names, handle GRUB_CMDLINE
entries (typically in grub2 configuration files) correctly: loop over
the whole configuration value, and replace each occurrency of
resume=/dev/device found.
The actual code is moved away from replace_if_device, since this
function now does only the actual replacement of the device string.
---
v2v/convert_linux.ml | 38
2012 Feb 22
4
Week number from a date
Hi
My data looks like this
startDate="2008-06-01"
dateRange =c( "2008-10-01","2008-12-01")
Is there any method to find the week number from the startDate range
-----
Thanks in Advance
Arun
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2009 Jan 09
1
Calculating p-values from your own distribution as an array
Hi -
If I have a hypothetical distribution as an array
distribution<-c(0,1,2,3,4,5,6,7,8,9)
and I want to find the probability there is a value smaller than a new
value.
new_value<-4
(such that I'd get this type of output)
new_value p-value
4 0.5
3.4 0.4
3 0.4
0 0.1
-1 0.0
Thanks for the help, I bet this is really easy... :/
Stephen
--
The Wellcome Trust Sanger Institute is
2012 Nov 26
3
Help in splitting the records
Hi
I have set of records seperated by a separator say "$$$" i want to get the
values in a dataframe.
eq
qwer$$12$$qwre
ewrtr$7789$ewwe
I want the output as\
V1 V2 V3
qwer 12 qwre
ewrtr 7789 ewwwe
Please help me
-----
Thanks in Advance
Arun
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2008 Jul 23
3
Validation method vs. After Save & Rollback
Hey Guys,
Again, I am just learning Rails, so I am asking advice here.
I have a model called Company which has many Owners. The Owners model
indicates the name of the owner and their share (as a percentage) of
the company. The total shares for any one company can not be more than
100%.
So if I have 10 owners each with 10% of the company and I update one
of the owners and set their share to 11%,
2004 Jul 14
1
New dynamic window patch (with limits)
As before, it is described on our website. This should apply fairly
cleanly to both portable and openbsd ssh.
http://www.psc.edu/networking/hpn-ssh/
Only in openssh-3.8.1p1-dynwindow: Makefile
diff -u openssh-3.8.1p1/buffer.c openssh-3.8.1p1-dynwindow/buffer.c
--- openssh-3.8.1p1/buffer.c 2003-11-21 07:56:47.000000000 -0500
+++ openssh-3.8.1p1-dynwindow/buffer.c 2004-07-12 07:49:29.000000000
2011 Sep 19
2
Setting the Values
Hi
I have a variable str = " X", "Y" and values ("0","12")
i want to set value for X =0 and Y =12 and use inside the program.
how to do this
Please anybody help me.
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2012 Apr 03
2
Histogram classwise
Hi
I have a data class wise. I want to create a histogram class wise without
using for loop as it takes a long time
my data looks like this
x class
27 1
93 3
65 5
1 2
69 5
2 1
92 4
49 5
55 4
46 1
51 3
100 4
-----
Thanks in Advance
Arun
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2012 Jul 17
2
comparing three vectors
Hi
I 've a data
a=c(10,20,30)
b=c(100,200,300)
c=c(50,60,70)
I want to compare a[1]<=c[1]<b[1],......
How to compare for all the records
-----
Thanks in Advance
Arun
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2012 Apr 24
2
searchina a pattern in a string
I have a long string. i want to sepearate a 10 digit phone no from it.
eg
"my no is 9876543210 is personal no and my official no is 123-456-8907. you
can use any of these"
i want to seperate the 9876543210 and 123-456-8907 from this. therev may be
many phone nos in the string. how to do it
-----
Thanks in Advance
Arun
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2012 Oct 24
3
Results not dispalying in R console
Hi
I'm not getting any results in R console when i run commands. I reinstalled
R but the results are same
-----
Thanks in Advance
Arun
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2012 Jan 09
6
runif with condition
Hi
I want to generate 4 random number which sum up to 100 always
Please help
-----
Thanks in Advance
Arun
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2011 Nov 16
3
changing date format in a dataframe
Hi
I have a data frame and i need to change the date format in it.
my dataframe
X Date
1 1/1/2009
2 2/1/2009
3 3/1/2009
I need to change it to 2009-01-01
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2012 Feb 22
3
inserting a dataframe into the table
Hi,
I have a dataset
X Y
A= 10 15
20 30
40 50
B = X Z
10 30
20 50
I have a table containing X Y Z columns
How to insert a data frame into the table without using for loop ?
now currently i'm using the for loop with using the insert command?
-----
Thanks in Advance
Arun
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2012 Jul 03
2
read the date format
hi
I have a data like thursday, November 20,2012. I'm not able to convert
into data format in R
Can anyone please help
-----
Thanks in Advance
Arun
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2012 Aug 03
1
how to get a date variable from a dataset
Hi
I have a find the class of each variable of the data set which is given as
input. I can able to find the string and the numeric variable. Not able to
find if the variable is date or not
Can any one help me.
-----
Thanks in Advance
Arun
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