On 2024/1/30 20:00, Martin Becker wrote:
Apart from the fact that the statement "such that t1+t2+t3+t4=2970 (as
it must)" is not correct, the LP can be implemented as follows:
I was confused by "such that t1+t2+t3+t4=2970 (as it must)", otherwise,
I also get the same solution.
library(lpSol
Apart from the fact that the statement "such that t1+t2+t3+t4=2970 (as
it must)" is not correct, the LP can be implemented as follows:
library(lpSolve)
LHS <- rbind(
c(0,0,0,0, 1, 0, 0,0),
c(1,0,0,0,-1, 1, 0,0),
c(0,1,0,0, 0,-1, 1,0),
c(0,0,1,0, 0, 0,-1,1),
cbind(-diag(4),diag(4)),
c(0,0,0,0,0,1
Question for 'experts' in LP using R (using the lpSolve package, say) --
which does not apply to me for the sort of problem I describe below.
I've run any number of LP's using lpSolve in R, but all of them to date
have objective and constraint functions that both contain the same
variables. This
On 03/17/2014 07:57 AM, Barbara Rogo wrote:
I have this problem with this form:
min (A*X) under some constraints.
the unknown is X that is a Matrix. I can't use the function "linp" because
in it X is a vector..
How can I do??? Can you help me
If X is a matrix, then A*X could be a matrix or
I have this problem with this form:
min (A*X) under some constraints.
the unknown is X that is a Matrix. I can't use the function "linp" because
in it X is a vector..
How can I do??? Can you help me
[[alternative HTML version deleted]]
__
Thank you very much for this! This also solves my original problem. I can't
remember at what point I assumed the bounds would be written that way. It
was a costly error.
Regarding the potential bug, I'm going to report it. R shut down completely
every time I ran the program, but didn't when I
Liu Evans, Gareth liverpool.ac.uk> writes:
> In my post at https://stat.ethz.ch/pipermail/r-help/2011-October/292019.html
> I included an undefined term "ej". The problem code should be as follows.
> It seems like a simple linear programming problem, but for some reason my
> code is not finding
In my post at https://stat.ethz.ch/pipermail/r-help/2011-October/292019.html I
included an undefined term "ej". The problem code should be as follows. It
seems like a simple linear programming problem, but for some reason my code is
not finding the solution.
obj <- c(rep(0,3),1)
col1 <-c(1,0
Dear All,
RGLPK says that there is no feasible solution but I think there should be. In
a more general setup with more variables, where we know the feasible solution
analytically, it also says there is no feasible solution. I have tried
different values. except the 0s and 1s must stay as they
Hi Marcus!
On Wednesday 28 May 2008 05:56, Marcus Vinicius wrote:
> Dear all,
> May anyone explain to me how I run a linear programming or Data
> Envelopment Analysis (DEA models) into R?
Package "DEA" (on CRAN):
http://cran.r-project.org/web/packages/DEA/index.html
Package "FEAR" (NOT on CRAN
On my system
help.search("linear program")
gives (slightly edited)
linp(limSolve) Linear Programming
solveLP(linprog)solve Linear Programming / Optimization
problems
lp.object(lpSolve) LP (linear programming) object
lpcdd(rcdd) linear
Dear all,
May anyone explain to me how I run a linear programming or Data Envelopment
Analysis (DEA models) into R?
Thanks a lot.
Best Regards.
Marcus Vinicius
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list
https://s
12 matches
Mail list logo
