Displaying 5 results from an estimated 5 matches for "poulations".
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populations
2006 Jul 21
1
Capistrano before and after tasks
I try to extend db:test:copy_structure task to poulate test database
with some existing data everytime i run it.
It seems that "after_" task is not called as should be:
> namespace :db do
> namespace :test do
> task :after_clone_structure do
> puts "after_clone_structure_to_test"
> end
> end
> end
Anyone know what I am doing wrong?
2010 Feb 06
1
limit to p-value using t.test()
Hello,
I am using t-test to check if the difference between two poulations is
significant. I have a large N=20,000, 10,000 in each population. I compare a
few different poulations with eachother and though I get different t-scores,
I get the same p-value of 10^-16 which seems like the limit for this
function. Is this true and is so, is there a workarounf to get a more
se...
2005 Dec 01
1
Row wise function call.
I have another issue.i have a function which calculates the log2(col i
/col2) value, where i stands for columns 3,4,...etc.
data<-read.table("table.txt", header=TRUE)
iratio<-function(x){
for(n in 3:ncol(data)){
z<-log2(data[x,n]/data[x,2])
}
}
Where x- the row number of the data frame(data).
i want to store the ratios for each row in a object z, which can be
accessed
2012 Feb 10
0
a) t-tests on loess splines; b) linear models, type II SS for unbalanced ANOVA
Dear all,
I have some questions regarding the validity an implementation of
statistical tests based on linear models and loess. I've searched the
R-help arhives and found several informative threads that related to my
questions, but there are still a few issues I'm not clear about. I'd be
grateful for guidance.
Background and data set:
I wish to compare the growth and metabolism
2007 Dec 27
6
populate data in another fields on selection
Hi,
I would like to know how to populate data in another text fields on
selection from a drop down
For Ex
1) The form contains 4 fields out of which 3 are text fields and the 4th
one is
drop down list.
1) i would like to know how to populate the 3 text fields with data
simultaneously
on selection from the drop down list.
Please Help.
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