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...ank you for any suggestions how to approach this task or where to look.   Juliane   Previous posts:   www.mail-archive.com/r-help@r-project.org/msg13078.html http://www.nabble.com/Nelder-Mead-with-output-of-simplex-vertices-tp25838572p25869383.html   Dr. Juliane Struve Environmental Scientist 10, Lynwood Crescent Sunningdale SL5 0BL 01344 620811 [[alternative HTML version deleted]]

...+1]=circularspace$ycoord[day=i]+circularspace$yvelocity[day=i]/timesteplength } points(circularspace$xcoord[day=i+1],circularspace$ycoord[day=i+1]) symbols(0,0,circles=radius,inches=F,add=T) symbols(0,0,circles=radius-2,inches=F,add=T) } circularspace ?Dr. Juliane Struve Environmental Scientist 10, Lynwood Crescent Sunningdale SL5 0BL 01344 620811

...5,394,800 01/12/2007 0.034 2,094,800 01/11/2007 0.035 3,091,232 01/10/2007 0.016 511,475 01/09/2007 0.015 481,693 You can get more information using your broker web-site! WARNING: INVEST YOUR MONEY EXACTLY IN OUR COMPANY!!! Outta Lynwood is Train cars derail, catch fire in KentuckyMassive fire

...5,394,800 01/12/2007 0.034 2,094,800 01/11/2007 0.035 3,091,232 01/10/2007 0.016 511,475 01/09/2007 0.015 481,693 You can get more information using your broker web-site! WARNING: INVEST YOUR MONEY EXACTLY IN OUR COMPANY!!! Outta Lynwood is Train cars derail, catch fire in KentuckyMassive fire

...how to apply it for this example. ? mean(DF$Data[match(trips,listoftrips)]) gives the mean?for all trips, so that's not right. How can I get?means for all trips in "trips" ??? ? Many thanks for any suggestions. ? ? Juliane ? ? ? ? ? ? ?Dr. Juliane Struve Environmental Scientist 10, Lynwood Crescent Sunningdale SL5 0BL 01344 620811 ----- Original Message ---- From: jim holtman <jholtman at gmail.com> To: Juliane Struve <juliane_struve at yahoo.co.uk> Cc: r-help at r-project.org Sent: Friday, 18 September, 2009 15:02:47 Subject: Re: [R] matching pairs regardless of orde...