Message-ID: <BANLkTikktc=cCDqVOrKFGb0PBk9xMR40hA@mail.gmail.com>
Date: 2011-04-23T12:41:30Z
From: Gabor Grothendieck
Subject: Using Java methods in R
In-Reply-To: <1303561979157-3469848.post@n4.nabble.com>
On Sat, Apr 23, 2011 at 8:32 AM, hill0093 <hill0093 at umn.edu> wrote:
> No answer to my post,
> so let's try a simpler question. Am I doing this correctly?
> I have the RGui with R Console on the screen.
> On rhe top pullDowns, Packages > Install Packages > USA(IA)> rJava
>> library(rJava)
>> .jinit()
>> qsLin <- .jnew("C:/ad/j/CalqsLin")
> Error in .jnew("C:/ad/j/CalqsLin") :
> ?java.lang.NoClassDefFoundError: C:/ad/j/CalqsLin
>
> So I got this error which means I don't understand very much.
> I go to C:/ad/j and get
> C:\ad\j>dir CalqsLin.class
> ?Volume in drive C has no label.
> ?Volume Serial Number is 9A35-67A2
> ?Directory of C:\ad\j
> 04/23/2011 ?07:11 AM ? ? ? ? ? ?14,651 CalqsLin.class
> ? ? ? ? ? ? ? 1 File(s) ? ? ? ? 14,651 bytes
> ? ? ? ? ? ? ? 0 Dir(s) ?104,257,716,224 bytes free
>
> Just to show my intentions,
> I had next wanted to call this java function method:
> linTimOfCalqsStgIsLev("201104052359599999",-4) using:
>> dblTim <-
>> .jcall(qsLin,"D","linTimOfCalqsStgIsLev","201104052359599999","-4")
> but that will probably also be wrong?
> Obviously I don't understand.
Have a look at the source of other packages that use rJava. Such
packages are listed at the bottom of this page:
http://cran.r-project.org/web/packages/rJava/index.html
Also note that there is a separate list for R and Java:
http://mailman.rz.uni-augsburg.de/mailman/listinfo/stats-rosuda-devel
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email: ggrothendieck at gmail.com