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src/o/r/Orange-2.7.2/docs/reference/rst/code/freeviz-pca.py   Orange(Download)
 
print "PCA"
freeviz.find_projection(Orange.projection.linear.DR_PCA, set_anchors=True)
projector = freeviz()
for e, projected in zip(test, mirror(projector(test))):
freeviz.graph.anchor_data = [(0,0, a.name) for a in freeviz.graph.data_domain
                                                    .attributes[:2]]
freeviz.find_projection(Orange.projection.linear.DR_PCA, set_anchors=True)
projector = freeviz()
for e, projected in zip(test, mirror(projector(test))):