I was solving a LGP problem which is very basic. Find x0 = [x1; x2], n0 = [n1; n2; n3] and p0 = [p1; p2; p3] that minimize a = [(2p1); (n2); (n3)] The objectives are as follows 10x1 + 15x2 + n1 - p1 = 40 100x1 + 100x2 + n2 - p2 = 1000 x2 + n3 - p3 = 7 x; n; p >= 0 The solution is x' = [4; 0] and a = [0; 600; 7]> local({pkg <- select.list(sort(.packages(all.available TRUE)),graphics=TRUE)+ if(nchar(pkg)) library(pkg, character.only=TRUE)})> local({pkg <- select.list(sort(.packages(all.available TRUE)),graphics=TRUE)+ if(nchar(pkg)) library(pkg, character.only=TRUE)})> coeff<-matrix (c(10,15,100,100,0,1), nrow=3, ncol=2, byrow=TRUE)> target<-c(40,1000,7)> p1<-c(2,0,0,0,0,0)> p2 <- c(0,0,0,0,1,0)> p3<- c(0,0,0,0,0,1)> achievement <- data.frame(p1,p2,p3)> achievementp1 p2 p3 1 2 0 0 2 0 0 0 3 0 0 0 4 0 0 0 5 0 1 0 6 0 0 1> llgp(coeff,target,achievement)Do you have any idea why I am seeing below error ? Error in matrix(0, nrow = levels, ncol = nonbasics) : invalid 'nrow' value (too large or NA) In addition: Warning messages: 1: In max(achievements$priority) : no non-missing arguments to max; returning -Inf 2: In matrix(0, nrow = levels, ncol = nonbasics) : NAs introduced by coercion to integer range Regards, Debasis Ghosh, Ph.D [[alternative HTML version deleted]]
Hi Just a wild guess. Achievement in the goalprog package is data frame with four named columns (objective, priority, p and n). Your achievement is 3 column data.frame with names p1, p2 and p3. Maybe data frame with defined structure is required. Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Dr. > Debasis Ghosh > Sent: Tuesday, September 20, 2016 8:12 AM > To: R-help at r-project.org > Subject: [R] Issue on LGP solving > > I was solving a LGP problem which is very basic. > > > > Find x0 = [x1; x2], n0 = [n1; n2; n3] and p0 = [p1; p2; p3] that minimize a > [(2p1); (n2); (n3)] > > The objectives are as follows > > 10x1 + 15x2 + n1 - p1 = 40 > > 100x1 + 100x2 + n2 - p2 = 1000 > > x2 + n3 - p3 = 7 > > x; n; p >= 0 > > The solution is x' = [4; 0] and a = [0; 600; 7] > > > > > > > local({pkg <- select.list(sort(.packages(all.available > TRUE)),graphics=TRUE) > > + if(nchar(pkg)) library(pkg, character.only=TRUE)}) > > > local({pkg <- select.list(sort(.packages(all.available > TRUE)),graphics=TRUE) > > + if(nchar(pkg)) library(pkg, character.only=TRUE)}) > > > > > > > coeff<-matrix (c(10,15,100,100,0,1), nrow=3, ncol=2, byrow=TRUE) > > > target<-c(40,1000,7) > > > p1<-c(2,0,0,0,0,0) > > > p2 <- c(0,0,0,0,1,0) > > > p3<- c(0,0,0,0,0,1) > > > achievement <- data.frame(p1,p2,p3) > > > achievement > > p1 p2 p3 > > 1 2 0 0 > > 2 0 0 0 > > 3 0 0 0 > > 4 0 0 0 > > 5 0 1 0 > > 6 0 0 1 > > > llgp(coeff,target,achievement) > > > > Do you have any idea why I am seeing below error ? > > > > > > Error in matrix(0, nrow = levels, ncol = nonbasics) : > > invalid 'nrow' value (too large or NA) > > In addition: Warning messages: > > 1: In max(achievements$priority) : > > no non-missing arguments to max; returning -Inf > > 2: In matrix(0, nrow = levels, ncol = nonbasics) : > > NAs introduced by coercion to integer range > > > > Regards, > > Debasis Ghosh, Ph.D > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting- > guide.html > and provide commented, minimal, self-contained, reproducible code.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. 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Thanks Petr!! However, I found in the goalprog package I found "achievements" as "a data frame with the deviation variables for each objective together with the priority level". I defined> p1<-c(2,0,0,0,0,0) > p2 <- c(0,0,0,0,1,0) > p3<- c(0,0,0,0,0,1) > achievement <- data.frame(p1,p2,p3)Here p1, p2 and p3 are the 3 priority levels. I understand the problem is at "achievement" data frame. To your point, data frame with four named columns (objective, priority, p and n), how these four columns are defined ? Appreciate your time Petr. Thanks again!! Regards, Debasis Ghosh, Ph.D -----Original Message----- From: PIKAL Petr [mailto:petr.pikal at precheza.cz] Sent: Tuesday, September 20, 2016 6:55 AM To: Dr. Debasis Ghosh; R-help at r-project.org Subject: RE: [R] Issue on LGP solving Hi Just a wild guess. Achievement in the goalprog package is data frame with four named columns (objective, priority, p and n). Your achievement is 3 column data.frame with names p1, p2 and p3. Maybe data frame with defined structure is required. Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Dr. > Debasis Ghosh > Sent: Tuesday, September 20, 2016 8:12 AM > To: R-help at r-project.org > Subject: [R] Issue on LGP solving > > I was solving a LGP problem which is very basic. > > > > Find x0 = [x1; x2], n0 = [n1; n2; n3] and p0 = [p1; p2; p3] that minimize a > [(2p1); (n2); (n3)] > > The objectives are as follows > > 10x1 + 15x2 + n1 - p1 = 40 > > 100x1 + 100x2 + n2 - p2 = 1000 > > x2 + n3 - p3 = 7 > > x; n; p >= 0 > > The solution is x' = [4; 0] and a = [0; 600; 7] > > > > > > > local({pkg <- select.list(sort(.packages(all.available > TRUE)),graphics=TRUE) > > + if(nchar(pkg)) library(pkg, character.only=TRUE)}) > > > local({pkg <- select.list(sort(.packages(all.available > TRUE)),graphics=TRUE) > > + if(nchar(pkg)) library(pkg, character.only=TRUE)}) > > > > > > > coeff<-matrix (c(10,15,100,100,0,1), nrow=3, ncol=2, byrow=TRUE) > > > target<-c(40,1000,7) > > > p1<-c(2,0,0,0,0,0) > > > p2 <- c(0,0,0,0,1,0) > > > p3<- c(0,0,0,0,0,1) > > > achievement <- data.frame(p1,p2,p3) > > > achievement > > p1 p2 p3 > > 1 2 0 0 > > 2 0 0 0 > > 3 0 0 0 > > 4 0 0 0 > > 5 0 1 0 > > 6 0 0 1 > > > llgp(coeff,target,achievement) > > > > Do you have any idea why I am seeing below error ? > > > > > > Error in matrix(0, nrow = levels, ncol = nonbasics) : > > invalid 'nrow' value (too large or NA) > > In addition: Warning messages: > > 1: In max(achievements$priority) : > > no non-missing arguments to max; returning -Inf > > 2: In matrix(0, nrow = levels, ncol = nonbasics) : > > NAs introduced by coercion to integer range > > > > Regards, > > Debasis Ghosh, Ph.D > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting- > guide.html > and provide commented, minimal, self-contained, reproducible code.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav? neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho syst?mu. Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat. Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi ?i zpo?d?n?m p?enosu e-mailu. V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?: - vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en? smlouvy, a to z jak?hokoliv d?vodu i bez uveden? d?vodu. - a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout; Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce s dodatkem ?i odchylkou. - trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m dosa?en?m shody na v?ech jej?ch n?le?itostech. - odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn? pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn? osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi ?i osob? j?m zastoupen? zn?m?. This e-mail and any documents attached to it may be confidential and are intended only for its intended recipients. If you received this e-mail by mistake, please immediately inform its sender. Delete the contents of this e-mail with all attachments and its copies from your system. If you are not the intended recipient of this e-mail, you are not authorized to use, disseminate, copy or disclose this e-mail in any manner. The sender of this e-mail shall not be liable for any possible damage caused by modifications of the e-mail or by delay with transfer of the email. In case that this e-mail forms part of business dealings: - the sender reserves the right to end negotiations about entering into a contract in any time, for any reason, and without stating any reasoning. - if the e-mail contains an offer, the recipient is entitled to immediately accept such offer; The sender of this e-mail (offer) excludes any acceptance of the offer on the part of the recipient containing any amendment or variation. - the sender insists on that the respective contract is concluded only upon an express mutual agreement on all its aspects. - the sender of this e-mail informs that he/she is not authorized to enter into any contracts on behalf of the company except for cases in which he/she is expressly authorized to do so in writing, and such authorization or power of attorney is submitted to the recipient or the person represented by the recipient, or the existence of such authorization is known to the recipient of the person represented by the recipient.