Hello,
I am a new R user. More precisely, I am working with JRI (on a Eclipse
Java6 project under Ubuntu9).
I have difficulties to access some R packages (For example: package
"stats", object "Normal", function "pnorm").
I have tried many solutions to set the right path but nothing have succeed:
For example: LD_LIBRARY_PATH=${R_HOME}/lib:${R_HOME}/bin:${R_HOME}/library
Inside the java code, I have also tried such methods:
Note that "r" is the REngine object coming from the connection to R
r.eval("dyn.load(\"/home/gran/workspace/R-2.9.0/library/stats/libs/stats.so\",
local = TRUE, now = TRUE)");
r.eval("require(stats)");
r.eval("autoload(\"Normal\",
\"stats\")");
r.eval("search()");
r.eval("ls(\"Autoloads\")");
System.out.println(r.eval(".Autoloaded"));
r.eval("zval = .95");
System.out.println(r.eval("print(zval)"));
r.eval("p3 = pnorm(3*zval)");
System.out.println(r.eval("print(p3)"));
It gives as a result:
[STRING "stats"]
[REAL* (0.95)]
null <---------- p3 = null because pnorm is unknown
Do you know how to use the "stats" package with JRI ?
Thanks in advance,
Antoine
Hi Antoine,
I have got this to work on Windows, the process should be the same for
Linux.
For an eclipse plugin you will need to add the following to your
MANIFEST.MF file:
Bundle-ClassPath: <whatever you normally have>,
lib/JRI.jar
Bundle-NativeCode: /lib/jri.dll; osname=winxp; processor=x86
You will also need to ensure that the R executable is in your path and
that R_HOME is set.
I did this by creating a simple batch file containing the following in a
directory called rootfiles within our feature, the same should work for
a .sh :
set PATH=%CD%\<R install>\exe;%PATH%
set R_HOME=%CD%\<R install>
eclipse.exe
I then added the following line to the build.properties file of the
feature:
root=rootfiles
This tells eclipse to copy the content of the directory to the root of
the application on install.
If you then run eclipse from the batch file, it should work.
--
Geoff Gibbs
mangosolutions
data analysis that delivers
Tel +44 (0)1249 767 700
Mob +44 (0)7791 855 620
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of GRAN
Sent: 25 June 2009 09:40
To: r-help at r-project.org
Subject: [R] JRI - problem to access "stats" package
Hello,
I am a new R user. More precisely, I am working with JRI (on a Eclipse
Java6 project under Ubuntu9).
I have difficulties to access some R packages (For example: package
"stats", object "Normal", function "pnorm").
I have tried many solutions to set the right path but nothing have
succeed:
For example:
LD_LIBRARY_PATH=${R_HOME}/lib:${R_HOME}/bin:${R_HOME}/library
Inside the java code, I have also tried such methods:
Note that "r" is the REngine object coming from the connection to R
r.eval("dyn.load(\"/home/gran/workspace/R-2.9.0/library/stats/libs/stats
.so\",
local = TRUE, now = TRUE)");
r.eval("require(stats)");
r.eval("autoload(\"Normal\",
\"stats\")");
r.eval("search()");
r.eval("ls(\"Autoloads\")");
System.out.println(r.eval(".Autoloaded"));
r.eval("zval = .95");
System.out.println(r.eval("print(zval)"));
r.eval("p3 = pnorm(3*zval)");
System.out.println(r.eval("print(p3)"));
It gives as a result:
[STRING "stats"]
[REAL* (0.95)]
null <---------- p3 = null because pnorm is unknown
Do you know how to use the "stats" package with JRI ?
Thanks in advance,
Antoine
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Hi Geoff,
Tks a lot for your reply.
There are many points we do not understand.
Can you clarify those one:
- At first, why do you speak about an eclipse plugin ?
We have compiled R and JRI together, so we get a jar file. We finally
include this jar file inside our java project as a referenced libraries.
So we do not understand why you are speaking about plugins and
MANIFEST.MF file.
- Nevermind, which MANIFEST.MF file are you speaking about ? the one of
the JRI plugin ? (if a JRI plugin exists...)
- Last things, you speak about a build.properties. In our project we
haven't any. Is there a work around to do the same ?
Tks for any help,
Antoine
Hi Antoine,
I have got this to work on Windows, the process should be the same for
Linux.
For an eclipse plugin you will need to add the following to your
MANIFEST.MF file:
Bundle-ClassPath: <whatever you normally have>,
lib/JRI.jar
Bundle-NativeCode: /lib/jri.dll; osname=winxp; processor=x86
You will also need to ensure that the *R* executable is in your path and
that *R_HOME* is set.
I did this by creating a simple batch file containing the following in a
directory called *rootfiles* within our feature, the same should work for
a .sh :
set PATH=%CD%\<*R* install>\exe;%PATH%
set *R_HOME*=%CD%\<*R* install>
eclipse.exe
I then added the following line to the build.properties file of the
feature:
*root*=*rootfiles*
This tells eclipse to copy the content of the directory to the *root* of
the application on install.
If you then *run* eclipse from the batch file, it should work.
--
Geoff Gibbs
mangosolutions
data analysis that delivers
Tel +44 (0)1249 767 700
Mob +44 (0)7791 855 620
-----Original Message-----
From: *r*-help-bounces at ...
<http://www.nabble.com/user/SendEmail.jtp?type=post&post=24199629&i=0>
[mailto:*r*-help-bounces at ...
<http://www.nabble.com/user/SendEmail.jtp?type=post&post=24199629&i=1>]
On Behalf Of GRAN
Sent: 25 June 2009 09:40
To: *r*-help at ...
<http://www.nabble.com/user/SendEmail.jtp?type=post&post=24199629&i=2>
Subject: [*R*] JRI - problem to access "*stats*" package
Hello,
I am a new *R* user. More precisely, I am working with JRI (on a Eclipse
Java6 project under Ubuntu9).
I have difficulties to access *some* *R* packages (For example: package
"*stats*", object "Normal", function "pnorm").
I have tried many *solutions* to set the *right* path but nothing have
succeed:
For example:
LD_LIBRARY_PATH=${*R_HOME*}/lib:${*R_HOME*}/bin:${*R_HOME*}/library
Inside the java code, I have also tried such methods:
Note that "*r*" is the *REngine* object coming from the connection to
*R*
*r*.eval("dyn.load(\"/home/gran/workspace/*R*-2.9.0/library/*stats*/libs/*stats*
.*so*\",
local = TRUE, now = TRUE)");
*r*.eval("*require*(*stats*)");
*r*.eval("autoload(\"Normal\",
\"*stats*\")");
*r*.eval("search()");
*r*.eval("ls(\"Autoloads\")");
System.out.println(*r*.eval(".Autoloaded"));
*r*.eval("zval = .95");
System.out.println(*r*.eval("print(zval)"));
*r*.eval("p3 = pnorm(3*zval)");
System.out.println(*r*.eval("print(p3)"));
It gives as a *result*:
[STRING "*stats*"]
[*REAL** (0.95)]
null <---------- p3 = null because pnorm is unknown
Do you know how to use the "*stats*" package with JRI ?
Thanks in advance,
Antoine