Query regarding linking R with Matlab - R-help

Wed, Dec 27, 2006 6:16 PM #

Hi.

Matlab$startServer()

but that R fails to connect to Matlab by:

  matlab <- Matlab(host="localhost", port=9998)
  if (!open(matlab))
    throw("Matlab server is not running: waited 30 seconds.")

Sorry for not being explicit enough; if no port is given,
Matlab$startServer() will setup up Matlab to listen to port 9999 (as
explained in the help), but then you try to communicate with it via
port 9998.  I realize that the example might be a bit confusing since
it is using port 9998 (for the purpose of illustrating the fact that
you can choose another port).

Either try the above with   Matlab$startServer(port=9998), *or*, maybe simpler:

  Matlab$startServer()
  matlab <- Matlab(host="localhost")
  if (!open(matlab))
    throw("Matlab server is not running: waited 30 seconds.")

Does this work for you?

Henrik

On 12/27/06, Bhanu Kalyan.K <kalyansikha at yahoo.com> wrote:

library("R.matlab")

Loading required package: R.oo
R.oo v1.2.3 (2006-09-07) successfully loaded. See ?R.oo for help.
R.matlab v1.1.2 (2006-05-08) successfully loaded. See ?R.matlab for help.

help(Matlab)

Matlab$startServer()Loading required package: R.utils

R.utils v0.8.0 (2006-08-21) successfully loaded. See ?R.utils for help.
[1] 0
// Here a Matlab window opened but that window couldnot be maximized.

matlab <- Matlab(host="localhost", port=9998)

matlab

[1] "Matlab: The Matlab host is 'localhost' and communication goes via port
9998. Objects are passed via the local file system (remote=FALSE). The
connection to the Matlab server is closed (not opened)."

setVerbose(matlab, -2)

open(matlab)

Opens a blocked connection to host 'localhost' (port 9998)...
 Try #0.
 Try #1.
 Try #2.
 Try #3.
 Try #4.
 Try #5.
 Try #6.
 Try #7.
 Try #8.
 Try #9.
 Try #10.
 Try #11.
 Try #12.

There were 12 warnings (use warnings() to see them)
Opens a blocked connection to host 'localhost' (port 9998)...done

if (!open(matlab))

+   throw("Matlab server is not running: waited 30 seconds.")
Opens a blocked connection to host 'localhost' (port 9998)...
 Try #0.
 Try #1.
// I 'stopped' the computation here
Warning message:
localhost:9998 cannot be opened Opens a blocked connection to host
'localhost' (port 9998)...done

This is the output obtained after running the commands. Kindly go through
the above commands and help me identify the problem.

Regards,
Bhanu Kalyan K


Bhanu Kalyan K
BTech CSE Final Year
reach4kalyan at gmail.com
Tel :+91-9885238228

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