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<table class="wysiwyg-macro" data-macro-name="excerpt" data-macro-parameters="atlassian-macro-output-type=BLOCK" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2V4Y2VycHQ6YXRsYXNzaWFuLW1hY3JvLW91dHB1dC10eXBlPUJMT0NLfQ&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="RICH_TEXT"><tr><td class="wysiwyg-macro-body"><p>Provides a domain specific language (DSL) for math engineering (matlab-like syntax).</p></td></tr></table><h2>Module Overview</h2><p>GroovyLab is a set of Groovy classes and Java libraries. It provides common linear algebra and plot static methods easily usable in any groovy script or class.</p><p>GroovyLab is fully usable, but still in development status. It is based on <a href="http://jmathtools.sf.net">JMathTools</a> Java API (based on JAMA and RngPack).</p><h3>Team Members</h3><ul><li>Yann Richet - Contributor to JMathTools Java project</li></ul><p>GroovyLab is just provided to start a math engineering DSL sub-project of Groovy. If you need GroovyLab, GroovyLab also needs you...</p><h2>Download</h2><h3>Distributions</h3><p>Source release available at <a href="http://code.google.com/p/groovylab/">GroovyLab website</a></p><h3>Installing</h3><p>Just extract the GroovyLab archive, and try to run examples cases using groovylab.bat or groovylab script: '</p><ul><li>groovylab examples/simpleTest.gvl</li><li>groovylab examples/moreTest.gvl</li></ul><h3>Pre-requisites</h3><p>GroovyLab is based on Groovy 1.1 and Java 1.5.</p><h2>Documentation</h2><p>The following example shows GroovyLab in action:</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>import static org.math.array.Matrix.*
import static org.math.plot.Plot.*

def A = rand(10,3)
println A
plot("A",A,"SCATTER")
</pre></td></tr></table><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>import static org.math.array.Matrix.*
import static org.math.plot.Plot.*

def A = rand(10,3) 		// random Matrix of 10 rows and 3 columns
def B = fill(10,3,1.0) 	// one Matrix of 10 rows and 3 columns
def C = A + B 			// support for matrix addition with "+" or "-"
def D = A - 2.0			// support for number addition with "+" or "-"
def E = A * B			// support for matrix multiplication or division
def F = rand(3,3)
def G = F**(-1)			// support for matrix power (with integers only)

println A				// display Matrix content

plot("A",A,"SCATTER")	// plot Matrix values as ScatterPlot

def M = rand(5,5) + id(5) //Eigenvalues decomposition
println "M=\n" + M
println "V=\n" + V(M)
println "D=\n" + D(M)
println "M~\n" + (V(M) * D(M) * V(M)**(-1))
</pre></td></tr></table>