[R] Bug in by() with dates as levels?

-03","2008-11-03", "2008-11-04", "2009-01-13", "2009-01-13", "2009-01-13")), Z = 1:7) > m <- by(x, list(A=x$A, D=x$D), function(v) { sum(v$Z); }) > m[x$A[1], x$D[1]] Error: subscript out of bounds Rgds, Oren Cheyette [[alternat

[R] nlsrob fails with puzzling error message on input accepted by nls

value or an infinity produced when evaluating the model at record %d"), i); (I'm not a maintainer of the package and have been using the precompiled binaries, so I'm hesitant to try to do this myself...) Alternatively, does anyone have a suggestion as to how to identify the