R help - Nov 2006 - lpSolve and mixed signs

Hi R People:

If you have a linear programming problem in which
some of the constraints have the "<=", some
have ">=" and some have "=", all in the same problem,
should the solver work?

I'm having trouble with that.  Any help much appreciated!

Sincerely,
Erin Hodgess
mailto: hodgess at gator.uhd.eud
whoops!
mailto: hodgess at gator.uhd.edu

>>>>> "Erin" == Erin Hodgess <hodgess at
gator.dt.uh.edu>
>>>>>     on Tue, 14 Nov 2006 17:30:11 -0600 writes:
    Erin> Hi R People:
    Erin> If you have a linear programming problem in which
    Erin> some of the constraints have the "<=", some
    Erin> have ">=" and some have "=", all in the same
problem,
    Erin> should the solver work?

Yes, I think it should. But ...

    Erin> I'm having trouble with that.  Any help much appreciated!

you haven't done as the posting guide asks....

    Erin> Sincerely,
    Erin> Erin Hodgess
    ..............

    Erin> ______________________________________________
    Erin> R-help at stat.math.ethz.ch mailing list
    Erin> https://stat.ethz.ch/mailman/listinfo/r-help
    Erin> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
    Erin> and provide commented, minimal, self-contained, reproducible code.
	      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. please ..

Regards,
Martin

Dear helpeRs,

anyone knows how to obtain a stacked area chart in R?
I mean one of the graph that is used for representing compositional 
data along time.

Thanks in advance,
domenico

--- Domenico Vistocco <vistocco at unicas.it> wrote:
> Dear helpeRs,
> 
> anyone knows how to obtain a stacked area chart in
> R?
> I mean one of the graph that is used for
> representing compositional 
> data along time.
> 
> Thanks in advance,
> domenico
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/59845.html
may help