/**
* Format the matrix contents for outputting
*
* @param Matrix $mA Matrix to format
* @param array $options Options for formatter
* - attribs => Collection of VertexDescription
* - optional: edgeFunc => function($weight){return $newWeight;}
* - optional: output:string script|object default = script
*
* If output is script, return the graphviz dot file contents
* If output is object then return Fhaculty\Graph\Graph for your own
* processing via Graphp\GraphViz\GraphViz
*
* @return Graph|string
*/
public function format(Matrix $mA, array $options = array())
{
if (!$mA instanceof NumericMatrix) {
throw new \InvalidArgumentException('Matrix is not NumericMatrix');
}
return FFor::create(['mA' => $mA, 'graph' => new Graph(), 'options' => $options])->attribs(function ($options) {
$attribs = array_key_exists('attribs', $options) ? $options['attribs'] : new Collection([], 'string');
if ($attribs instanceof Collection) {
return $attribs;
}
throw new \InvalidArgumentException('options[attribs]');
})->edgeFunc(function ($options) {
$edgeFunc = array_key_exists('edgeFunc', $options) ? $options['edgeFunc'] : function ($w) {
return $w;
};
if ($edgeFunc instanceof \Closure) {
return $edgeFunc;
}
throw new \InvalidArgumentException('pptions[edgeFunc]');
})->output(function ($options) {
return array_key_exists('output', $options) ? $options['output'] : 'script';
})->vertices(function (Collection $attribs, Matrix $mA, Graph $graph) {
$vertices = [];
foreach (range(0, $mA->rows() - 1) as $idx) {
if (array_key_exists($idx, $attribs)) {
$attribute = $attribs[$idx];
$vertices[$idx + 1] = $graph->createVertex($attribute->getName());
foreach ($attribute->getAttributes() as $key => $val) {
$vertices[$idx + 1]->setAttribute($key, $val);
}
} else {
$vertices[$idx + 1] = $graph->createVertex();
}
}
return $vertices;
})->graphViz(function (Graph $graph, Matrix $mA, array $vertices, \Closure $edgeFunc, $output) {
$comp = new Comparator();
$zero = TypeFactory::createInt(0);
$rows = $mA->rows();
for ($row = 1; $row <= $rows; $row++) {
for ($col = 1; $col <= $rows; $col++) {
if ($comp->compare($zero, $mA->get($row, $col)) != 0) {
$vertices[$row]->createEdgeTo($vertices[$col])->setWeight($edgeFunc($mA->get($row, $col)->get()));
}
}
}
return $output == 'script' ? (new GraphViz())->createScript($graph) : $graph;
})->fyield('graphViz');
}
public function testMatrixGetWithTwoPositiveParametersReturnsVertice()
{
$testArray = array(array(1, 2, 3), array(0, 2, 1), array(2.5, 1, 3));
$this->object = new Matrix($testArray);
for ($r = 1; $r < 4; $r++) {
for ($c = 1; $c < 4; $c++) {
$this->assertEquals($testArray[$r - 1][$c - 1], $this->object->get($r, $c));
}
}
}
