Displaying 2 results from an estimated 2 matches for "bulutoglu".
2004 Jul 29
3
Editing Strings in R
I was wondering if there is a way of editting strings in R. I
have a set of strings and each set is a row of numbers and paranthesis.
For example the first row is:
(0 2)(3 4)(7 9)(5 9)(1 5)
and I have a thousand or so such rows. I was wondering how I
could get the corresponding string obtained by adding 1 to all the
numbers in the string above.
Dursun
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2003 Jul 07
2
(PR#3427)
...olve(t(xxmodel)%*%(xxmodel))
Yields the following massage:
Error in solve.default(t(xxmodel) %*% (xxmodel)) : singular matrix `a'
in solve
The above 5X5 matrix is invertible. It has non-zero eigenvalues. Could
someone explain whether there is a problem in R's solve() function.
Dursun Bulutoglu