search for: poulate

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 &g...

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 sensitive/accurate p-value?

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

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

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. -- Posted via http://www.ruby-forum.com/.