Perhaps I should clarify that when I use sample code from the lp help
function, I can paste it and run it in my windows-based R with no
problems. My question is why the same code won't work on a linux
system.
Thanks,
Byran Smucker
On Wed, 11 Jul 2007 12:00:09 +0200 r-help@stat.math.ethz.ch wrote:
Message: 56
Date: Tue, 10 Jul 2007 19:07:10 -0400
From: "Byran Smucker" <[EMAIL PROTECTED]>
Subject: [R] error using lp function in linux
To: r-help@stat.math.ethz.ch
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain
Hello all,
I would like to use the lp function (lpSolve package) on a linux system. Using
sample code from the lp function help, I can solve the linear program with no
errors or problems. However, when I copy the exact same code to R in linux
(after loading the lpSolve package), I get the following error:
*** caught segfault ***
address 0x3, cause 'memory not mapped'
Traceback:
1: .C("lpslink", direction = as.integer(direction), x.count =
as.integer(x.count), objective = as.double(objective), const.count =
as.integer(const.count), constraints = as.double(constraints), int.count
= as.integer(int.count), int.vec = as.integer(int.vec), objval =
as.double(objval), solution = as.double(solution), presolve =
as.integer(presolve), compute.sens = as.integer(compute.sens),
sens.coef.from = as.double(sens.coef.from), sens.coef.to =
as.double(sens.coef.to), duals = as.double(duals), duals.from =
as.double(duals.from), duals.to = as.double(duals.to), status =
as.integer(status), PACKAGE = "lpSolve")
2: lp("max", f.obj, f.con, f.dir, f.rhs)
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Does this function not work with linux or is there some other
explanation?Thanks,
Byran Smucker
Graduate Student, Dept. of Statistics
Penn State University
301 Thomas Building
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