Java and R bridge -


i want run r-script java. have following code, giving null:

try {     rcaller caller = new rcaller();     caller.setrscriptexecutable("c:/program files/r/r-3.0.1/bin/x64/rscript.exe");     caller.cleanrcode();                   caller.addrcode("k<-1");    //initializing k 1     caller.addrcode("b<-print(k)");      caller.runandreturnresult("b"); //this should output value of b       } catch(exception e) {     e.printstacktrace(); }

i don't know i'm doing wrong. please out.

i suggest download latest version, 2.1.1. code below works expected (prints 1) version 2.1.1.

import rcaller.rcaller; import rcaller.rcode;  public class rcallerdemo {     public static void main(string[] args) {         try {             rcaller caller = new rcaller();             caller.setrscriptexecutable("/usr/bin/rscript");             caller.cleanrcode();             rcode code = new rcode();             final string st1 = "k<-1";             final string st2 = "b<-print(k)";             code.addrcode(st1);             code.addrcode(st2);             caller.setrcode(code);    //initializing k 1             caller.runandreturnresult("b"); //this should output value of b             int b = caller.getparser().getasintarray("b")[0];             system.out.println(b);          } catch (exception e) {             e.printstacktrace();         }     } }

the example based on original rcaller examples.


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