Displaying 1 result from an estimated 1 matches for "leftb".
Did you mean:
left
2007 Jun 30
1
speed and looping issues; calculations on big datasets
dear r users,
i'm a little stuck with the following problem(s), hopefully somebody
can offer some help:
i have data organized in a binary matrix, which can become quite big
like 60 rows x 10^5 columns (they represent SNP genotypes, for some
background info). what i need to do is the following:
let's suppose i have a matrix of size n x m. for each of the m
columns, i want to know