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...ng error, 'Error in heq(theta, ...) : unused argument(s) (RR = 0.0075)' I do not appear to be able to input further arguments in this manner, any help from the list would be gratefully received. Regards Mike Griffiths On Tue, Dec 20, 2011 at 11:53 AM, Michael Griffiths < griffiths@upstreamsystems.com> wrote: > Dear List, > > I am using constrOptim to solve the following > > fr1 <- function(x) { > b0 <- x[1] > b1 <- x[2] > ((1/(1+exp(-b0+b1))+(1/(1+exp(-b0)))+(1/(1+exp(-b0-b1)))))/3 > } > > As you can see, my objective function is &g...

...iously still not understanding something. If the list could offer some guidance I would be most grateful. Regards Mike Griffiths -- *Michael Griffiths, Ph.D *Statistician *Upstream Systems* 8th Floor Portland House Bressenden Place SW1E 5BH <http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9DxUmWw> Tel +44 (0) 20 7869 5147 Fax +44 207 290 1321 Mob +44 789 4944 145 www.upstreamsystems.com<http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9D...

...in R. Can the community suggest another method by which this might be solved? As ever, many thanks for your time. Mike Griffiths -- *Michael Griffiths, Ph.D *Statistician *Upstream Systems* 8th Floor Portland House Bressenden Place SW1E 5BH <http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9DxUmWw> Tel +44 (0) 20 7869 5147 Fax +44 207 290 1321 Mob +44 789 4944 145 www.upstreamsystems.com<http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9D...

...incorrectly in my specification of grr in constrOptim. If the list could help, I would be most grateful. Regards Mike Griffiths -- *Michael Griffiths, Ph.D *Statistician *Upstream Systems* 8th Floor Portland House Bressenden Place SW1E 5BH <http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9DxUmWw> Tel +44 (0) 20 7869 5147 Fax +44 207 290 1321 Mob +44 789 4944 145 www.upstreamsystems.com<http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9D...

...having the need for the aforementioned spaces. If the list can offer help, I would be most appreciative. Yours Mike Griffiths -- *Michael Griffiths, Ph.D *Statistician *Upstream Systems* 8th Floor Portland House Bressenden Place SW1E 5BH <http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9DxUmWw> Tel +44 (0) 20 7869 5147 Fax +44 207 290 1321 Mob +44 789 4944 145 www.upstreamsystems.com<http://www.google.com/url?q=http%3A%2F%2Fwww.upstreamsystems.com%2F&sa=D&sntz=1&usg=AFrqEzfKYfaAalqvahwrpywpJDL9D...

...le functions which would make the separations and constructions required easy to achieve? Thanks in advance to all Michael Hopkins Algorithm and Statistical Modelling Expert Upstream 23 Old Bond Street London W1S 4PZ Mob +44 0782 578 7220 DL +44 0207 290 1326 Fax +44 0207 290 1321 hopkins@upstreamsystems.com www.upstreamsystems.com IMPORTANT NOTICE The information in this e-mail and any attached files is...{{dropped:22}}

...d I be looking at here and are there any examples available? Thanks in advance. Feel free to CC me on your reply. Michael Hopkins Algorithm and Statistical Modelling Expert Upstream 23 Old Bond Street London W1S 4PZ Mob +44 0782 578 7220 DL +44 0207 290 1326 Fax +44 0207 290 1321 hopkins@upstreamsystems.com www.upstreamsystems.com IMPORTANT NOTICE The information in this e-mail and any attached files is...{{dropped:22}}

...Are there any functions or libraries in R that will allow me to do this without too much grief? Thanks in advance Michael Hopkins Algorithm and Statistical Modelling Expert Upstream 23 Old Bond Street London W1S 4PZ Mob +44 0782 578 7220 DL +44 0207 290 1326 Fax +44 0207 290 1321 hopkins@upstreamsystems.com www.upstreamsystems.com [[alternative HTML version deleted]]

I understand this isn't a r specific question. I'm switching departments to work with the analytics team at my company as a "service" side manager to better incorporate the analytics process into product design / production. We're an online gaming company. As I'm going through tools like R, rapidminer, tableau, I was also thinking that I should get some formal training

OK, my last question didn't get any replies so I am going to try and ask a different way. When I generate contrasts with contr.sum() for a 3 level categorical variable I get the 2 orthogonal contrasts: > contr.sum( c(1,2,3) ) [,1] [,2] 1 1 0 2 0 1 3 -1 -1 This provides the contrasts <1-3> and <2-3> as expected. But I also want it to create <1-2> (i.e.

...or me. cheers -- View this message in context: http://r.789695.n4.nabble.com/strftime-vs-strptime-tp3018865p3018865.html Sent from the R help mailing list archive at Nabble.com. ------------------------------ Message: 5 Date: Fri, 29 Oct 2010 12:00:59 +0100 From: Michael Hopkins <hopkins@upstreamsystems.com> To: r-help@r-project.org Subject: [R] multiple weights in MANOVA Message-ID: <44E5CA63-ADDB-4958-87BC-8BFFE625052F@upstreamsystems.com> Content-Type: text/plain Hi all I have 7 responses that I want to fit with MANOVA. I have accumulated the responses into a matrix Y and each re...

Dear R users, I have used the AlgDesign package to construct a D-optimal exp. design from a file containing a set of allowed runs. The code for the optFederov call is below: #Using optFederov ------------------------------ library(AlgDesign) options(contrasts=c("contr.sum","contr.poly")) file<- read.table("C:/Upstream/Designs/Vodacom Tanzania phase1