使用Renjin在Java中進行Rsolnp

Question

我正在嘗試從Java程序運行solnp。 為了測試它是否有效，我試圖僅運行benchmarkids()函數。 但是我無法解決對包的引用。 我已經在http://packages.renjin.org/package/org.renjin.cran/Rsolnp/中檢查了Rsolnp軟件包，據我所知它可以在renjin中加載。

我添加了Maven所需的軟件包：

<dependency>
   <groupId>org.renjin.cran</groupId>
   <artifactId>Rsolnp</artifactId>
   <version>1.16-b28</version>
</dependency>

我嘗試將包直接添加到我的項目中（我正在使用Eclipse Neon），但仍然無法正常工作。

我得到的錯誤：

org.renjin.eval.EvalException: Could not load package rsolnp; tried org.renjin.bioconductor:rsolnp, org.renjin.cran:rsolnp
    at org.renjin.primitives.packaging.NamespaceRegistry.getNamespace(NamespaceRegistry.java:160)
    at org.renjin.primitives.packaging.NamespaceRegistry.getNamespace(NamespaceRegistry.java:115)
    at org.renjin.primitives.packaging.Packages.library(Packages.java:41)
    at org.renjin.primitives.R$primitive$library.doApply(R$primitive$library.java:73)
    at org.renjin.primitives.R$primitive$library.apply(R$primitive$library.java:34)
    at org.renjin.primitives.special.InternalFunction.apply(InternalFunction.java:45)
    at org.renjin.eval.Context.evaluateCall(Context.java:302)
    at org.renjin.eval.Context.evaluate(Context.java:222)
    at org.renjin.primitives.special.BeginFunction.apply(BeginFunction.java:38)
    at org.renjin.eval.Context.evaluateCall(Context.java:302)
    at org.renjin.eval.Context.evaluate(Context.java:222)
    at org.renjin.eval.Context.evaluate(Context.java:163)
    at org.renjin.sexp.Closure.doApply(Closure.java:83)
    at org.renjin.eval.ClosureDispatcher.apply(ClosureDispatcher.java:73)
    at org.renjin.eval.ClosureDispatcher.applyClosure(ClosureDispatcher.java:58)
    at org.renjin.sexp.Closure.apply(Closure.java:78)
    at org.renjin.eval.Context.evaluateCall(Context.java:302)
    at org.renjin.eval.Context.evaluate(Context.java:222)
    at org.renjin.eval.Context.evaluateExpressionVector(Context.java:285)
    at org.renjin.eval.Context.evaluate(Context.java:220)
    at org.renjin.script.RenjinScriptEngine.eval(RenjinScriptEngine.java:168)
    at org.renjin.script.RenjinScriptEngine.eval(RenjinScriptEngine.java:127)
    at test.java.RsolnpTest.testRsolnp(RsolnpTest.java:55)

最后，我嘗試調用的代碼：

import javax.script.*;
import org.renjin.script.*;

// some other tests to see if 10 * 2 in R works.

 public void testRsolnp()
{
    RenjinScriptEngineFactory factory = new RenjinScriptEngineFactory();
    ScriptEngine engine = factory.getScriptEngine();
    try
    {
        engine.eval("library(rsolnp); benchmarkids();");

    }
    catch (ScriptException e)
    {
        e.printStackTrace();
    }

    // testing code.
}

Answer 1

R中的程序包名稱區分大小寫。 試試： engine.eval("library(Rsolnp); benchmarkids();");