[R] r-package RDCOMClient

[Robert Baer]

These sorts of issues are often machine dependent and not R package or R 
software dependent, especially when it comes to processes like com.  I a,m 
not a RDCOMClient user, but it's been on my list to look at. You don't 
provide much info on your various component versions (see posting guide) so 
specific advice is impossible.

If it helps, On my 64-bit window 7 running32-bit  "i386-pc-mingw32" R 2.15.0 
machine (I don't think 64-bit R is supported for RDCOMClient, but I could be 
wrong), I was just able to install a fresh RDCOMClient from Omegahat 
repository.  The code:

> require(RDCOMClient)
> ex = COMCreate("Excel.Application")
> ex[["Visible"]] = TRUE

produced an open visible Excel Window.  My Excel is 32-bit version Office 
2010.  Bottom line, success should be possible.

Good luck.

Rob

-----Original Message----- 
From: lm
Sent: Saturday, April 28, 2012 2:01 PM
To: r-help at r-project.org
Subject: Re: [R] r-package RDCOMClient

Hi, I am new to R. I was trying to use RDCOMClient package to access com
object based applications within R. This has been working fine for a while.
I have identical set up on two PCs (R-2.1.10 running on XP both on network
so same profile). Recently while installing a new package, I had to upgrade
one of the PCs to R-2.14.0 and since then while calling the methods or
accessing properties make RGui to crash.

i.eR

ex = COMCreate("Excel.Application") works fine before and after R upgrade (I
can see Excel under task manager. But ex[["Visible"]] = TRUE will crash the
RGui.

On the same PC, I can interact with Bloomberg using RBloomberg package
before and after R upgrade.

I tried to uninstall R-2.14.0 and reinstall R-2.10.0 and still does not
work.

I thought it could be to do with COM objects registry issues   etc. , so a
complete rebuild of the PC might fix the issue. Instead of rebuilding the
PC, I  replaced my old hard disk with a new one and unfortunately had no
joy.

I wonder if anyone had faced similar issues. Any help on this will be
greatly appreciated.

Thanks
lm







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