Hello,
I need to call R from a java(swing) application. I manage to do it with
something like :
Process p = Runtime.getRuntime().exec("R --slave")
OutputStreanWriter o = new OutputStreamWriter(p.getOutputStream())
o.wrote("...")
... etc
but at the end no .Rdata file has been created and there are some data I
don't want to reload each time (for time execution reasons).
So,
Is it possible when calling R from java to create a .Rdata file to save
data and as a consequence when recalling in the same directory not to have
to reload those data ?
(Maybe the option --slave need to be changed ? )
many thanks for helping me
best regards,
af
anthony.ferrari at ensimag.imag.fr
Look at the SJava package on Omegahat.org Good luck. best, -tony "anthony.ferrari at ensimag.imag.fr" <ferraria at ensisun.imag.fr> writes:> Hello, > > I need to call R from a java(swing) application. I manage to do it with > something like : > > Process p = Runtime.getRuntime().exec("R --slave") > OutputStreanWriter o = new OutputStreamWriter(p.getOutputStream()) > o.wrote("...") > ... etc > > but at the end no .Rdata file has been created and there are some data I > don't want to reload each time (for time execution reasons). > So, > Is it possible when calling R from java to create a .Rdata file to save > data and as a consequence when recalling in the same directory not to have > to reload those data ? > (Maybe the option --slave need to be changed ? ) > > > many thanks for helping me > > best regards, > af > anthony.ferrari at ensimag.imag.fr > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >-- rossini at u.washington.edu http://www.analytics.washington.edu/ Biomedical and Health Informatics University of Washington Biostatistics, SCHARP/HVTN Fred Hutchinson Cancer Research Center UW (Tu/Th/F): 206-616-7630 FAX=206-543-3461 | Voicemail is unreliable FHCRC (M/W): 206-667-7025 FAX=206-667-4812 | use Email CONFIDENTIALITY NOTICE: This e-mail message and any attachme...{{dropped}}
Hi,
There are two ways to do what you want to do:
1. Explicitly use save() in R. Something like: o.write("save(obj1, obj2,
file=\"filename\")") to save a select set of R objects to a file
you specify
(can be retrieved with load later), or
2. When you quit R: o.write("quit(\"yes\")\n") instead of
o.write("quit(\"no\")\n") to save everything to the .Rdata
HTH,
Nick
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of
anthony.ferrari at ensimag.imag.fr
Sent: Wednesday, April 21, 2004 12:08 PM
To: r-help at stat.math.ethz.ch
Subject: [R] calling R from java
Hello,
I need to call R from a java(swing) application. I manage to do it with
something like :
Process p = Runtime.getRuntime().exec("R --slave")
OutputStreanWriter o = new OutputStreamWriter(p.getOutputStream())
o.wrote("...")
... etc
but at the end no .Rdata file has been created and there are some data I
don't want to reload each time (for time execution reasons).
So,
Is it possible when calling R from java to create a .Rdata file to save
data and as a consequence when recalling in the same directory not to have
to reload those data ?
(Maybe the option --slave need to be changed ? )
many thanks for helping me
best regards,
af
anthony.ferrari at ensimag.imag.fr
______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html