Re: [R] Summing using a boolean index vector (repost in plain text).

5 5 5 6 6 6 6 6 7 7 7 7 Dan Stanger Eaton Vance Management 200 State Street Boston, MA 02109 617 598 8261 -Original Message- From: jim holtman [mailto:jholt...@gmail.com] Sent: Friday, June 18, 2010 12:24 PM To: Dan Stanger Cc: R-help@r-project.org Subject: Re: [R] Summ

[R] Summing using a boolean index vector (repost in plain text).

vector, and when I get to true, produce the sum, and start summing again. Is there a vector operation which can do this, without writing an explicit loop? Thank you, Dan Stanger P.S. Sorry about the repost. Eaton Vance Management 200 State Street Boston, MA 02109 617 59

[R] Summing using a boolean index vector

vector, and when I get to true, produce the sum, and start summing again. Is there a vector operation which can do this, without writing an explicit loop? Thank you, Dan Stanger Eaton Vance Management 200 State Street Boston, MA 02109 617 598 8261 [[alternative HTML version d

[R] Cluster analysis question

? Dan Stanger Eaton Vance Management 255 State Street Boston, MA 02109 617 598 8261 [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

Re: [R] Newbie question about vector matrix multiplication

Hi Phil, That solved the problem. Thanks, Dan Stanger Eaton Vance Management 200 State Street Boston, MA 02109 617 598 8261 -Original Message- From: Phil Spector [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 14, 2008 3:42 PM To: Dan Stanger Subject: RE: [R] Newbie question about vector

Re: [R] Newbie question about vector matrix multiplication

Hello Abhijit, When I try that, I get: > diag(w)%*%co%*%diag(w) Error in diag(w) %*% co : requires numeric matrix/vector arguments Dan Stanger Eaton Vance Management 200 State Street Boston, MA 02109 617 598 8261 -Original Message- From: Abhijit Dasgupta [mailto:[EMAIL PROTECTED] S

[R] Newbie question about vector matrix multiplication

8 7.47216E-08 1.96566E-11 4.29229E-11 4.41255E-08 4.29229E-11 4.11045E-11 Is this possible without writing explicit loops? Thank you, Dan Stanger Eaton Vance Management 200 State Street Boston, MA 02109 617 598 8261 [[alternative HTML version deleted]] __