def setup_plot(self, reset_view=True):
assert not self._X is None
self.graph.jitter_continuous = True
self.__replot_requested = False
X = self.plotdata.X = self._X
self.plotdata.Y = self._Y
self.plotdata.validmask = self._validmask
self.plotdata.selection = self._selection if self._selection is not None else \
np.zeros(len(self._validmask), dtype=np.uint8)
anchors = self.plotdata.anchors
if len(anchors) == 0:
if self.initialization == self.Circular:
anchors = FreeViz.init_radial(X.shape[1])
else:
anchors = FreeViz.init_random(X.shape[1], 2)
EX = np.dot(X, anchors)
c = np.zeros((X.shape[0], X.shape[1]))
for i in range(X.shape[0]):
c[i] = np.argsort((np.power(X[i] * anchors[:, 0], 2) +
np.power(X[i] * anchors[:, 1], 2)))[::-1]
self.plotdata.topattrs = np.array(c, dtype=int)[:, :10]
radius = np.max(np.linalg.norm(EX, axis=1))
self.plotdata.anchors = anchors
coords = (EX / radius)
self.plotdata.embedding_coords = coords
if reset_view:
self.viewbox.setRange(RANGE)
self.viewbox.setAspectLocked(True, 1)
self.plot(reset_view=reset_view)
def setup_plot(self, reset_view=True):
assert not self._X is None
self.graph.jitter_continuous = True
self.__replot_requested = False
X = self.plotdata.X = self._X
self.plotdata.Y = self._Y
self.plotdata.validmask = self._validmask
self.plotdata.selection = self._selection if self._selection is not None else \
np.zeros(len(self._validmask), dtype=np.uint8)
anchors = self.plotdata.anchors
if len(anchors) == 0:
if self.initialization == self.Circular:
anchors = FreeViz.init_radial(X.shape[1])
else:
anchors = FreeViz.init_random(X.shape[1], 2)
EX = np.dot(X, anchors)
c = np.zeros((X.shape[0], X.shape[1]))
for i in range(X.shape[0]):
c[i] = np.argsort((np.power(X[i] * anchors[:, 0], 2) +
np.power(X[i] * anchors[:, 1], 2)))[::-1]
self.plotdata.topattrs = np.array(c, dtype=int)[:, :10]
radius = np.max(np.linalg.norm(EX, axis=1))
self.plotdata.anchors = anchors
coords = (EX / radius)
self.plotdata.embedding_coords = coords
if reset_view:
self.viewbox.setRange(RANGE)
self.viewbox.setAspectLocked(True, 1)
self.plot(reset_view=reset_view)
def setup_plot(self):
points = FreeViz.init_radial(self._X.shape[1]) \
if self.initialization == InitType.Circular \
else FreeViz.init_random(self._X.shape[1], 2)
self.graph.set_points(points)
self.__set_embedding_coords()
self.graph.set_attributes(self.data.domain.attributes)
self.graph.reset_graph()
def update_freeviz(anchors):
while True:
_, projection, *_ = FreeViz.freeviz(
self._X, self._Y, scale=False, center=False,
initial=anchors, maxiter=10)
yield projection
if np.allclose(anchors, projection, rtol=1e-5, atol=1e-4):
return
anchors = projection
def update_freeviz(interval, initial):
anchors = initial
while True:
res = FreeViz.freeviz(X, Y, scale=False, center=False,
initial=anchors, maxiter=interval)
_, anchors_new = res[:2]
yield res[:2]
if np.allclose(anchors, anchors_new, rtol=1e-5, atol=1e-4):
return
anchors = anchors_new
def update_freeviz(interval, initial):
anchors = initial
while True:
res = FreeViz.freeviz(X, Y, scale=False, center=False,
initial=anchors, maxiter=interval)
_, anchors_new = res[:2]
yield res[:2]
if np.allclose(anchors, anchors_new, rtol=1e-5, atol=1e-4):
return
anchors = anchors_new
def init_embedding_coords(self):
self.projection = FreeViz.init_radial(self._X.shape[1]) \
if self.initialization == InitType.Circular \
else FreeViz.init_random(self._X.shape[1], 2)