Displaying 5 results from an estimated 5 matches for "jclasspath".
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classpath
2011 Apr 30
3
Copying to R a rectangular array from a Java class
...g); }
public final static double retCon0dbl() { return(con0dbl); }
public final static double[] retCon1Arr() { return(con1Arr); }
public final static double[][] retCon2Arr() { return(con2Arr); }
}
library(rJava)
.jinit()
.jaddClassPath("C:/ad/j") # a directory on my disk
print(.jclassPath())
rJavaTst <- .jnew("RJavTest") # compilation of class code
connStg <- .jfield(rJavaTst,sig="S","conStg")
print(connStg)
connStgRet <- .jcall(rJavaTst,returnSig="S","retConStg")
print(connStgRet)
conn1Arr <- .jfield(rJavaTst,sig="...
2009 Apr 05
1
RJava question(class not found with rJava's vm, though found with alternate vm)
Not sure if this the right place, but I can't seem to subscribe to the rJava
mailing list. Sorry for the noise.
I have a jar file in the CLASSPATH variable. On running .jinit and checking
.jclassPath, i can see the jar file containing the class. Yet when trying to
instantaite the class, i get a class not found error.
Now If if, create my own vm (see below), and then run .jinit (which will use
my vm), i can find the class in question (org.apache.hadoop.io.longwritable)
Is there some classloade...
2012 Mar 22
3
calling java from R and using java time series double precision array
I haven't had time to try using R for over a year, but have a colleage who
wants to.
We work with time series and our current version of our calendar-time
subroutines in
java converts both directions between linear time and calendar.
We have used calendar time since year 1965 starting out then with Fortran.
Calendar time can be CnYrMoDa | CnYrMoDaHr | CnYrMoDaHrMn | CnYrMoDaHrMnSc
|
2007 Sep 27
2
rJava and RJDBC
...river}"
my java version is
> .jcall('java.lang.System','S','getProperty','java.version')
[1] "1.6.0_02"
jre
When I use java 1.5.0_11 jre I have the same problem but the .jgetEx()
is
> .jgetEx()
[1] "Java-Object{}
my class path is
> .jclassPath()
[1] "C:\\PROGRA~1\\R\\library\\rJava\\java"
[2] "."
[3]
"C:\\libraries\\mysql-connector-java-5.1.3-rc\\mysql-connector-java-5.1.3-rc-bin.jar"
[4] "C:\\libraries\\xmlbeans-2.0.0-beta1\\lib\\xbean.jar"
[5] "C:\\libraries\\POI\\poi-2.5.1-...
2009 Mar 24
0
A question about rJava and the classpath
...; java.lang.RuntimeException:
java.lang.ClassNotFoundException:
org.apache.hadoop.hdfs.DistributedFileSystem
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:720)
This does not appear to be possible(ClassNotFound), since
hadoop-0.19-core.jar which is *present* in the output of .jclassPath()
does contain an entry to this class.
Moreover, when run at the command line using the *same* classpath, I
don't get any such error messages.
Is there a possible reason why?
Regards
Saptarshi
Saptarshi Guha