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Minor modifications to visualization routines and examples.

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This commit is contained in:
Neil Lawrence 2013-04-02 10:49:09 +02:00
parent fce4dd7fde
commit 9422c603b1
2 changed files with 15 additions and 16 deletions
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8
GPy/examples/dimensionality_reduction.py
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@ -73,12 +73,12 @@ def oil_100():
def brendan_faces(): def brendan_faces():
data = GPy.util.datasets.brendan_faces() data = GPy.util.datasets.brendan_faces()
Y = data['Y'][0:500, :] Y = data['Y'][0:-1:10, :]
m = GPy.models.GPLVM(Y, 2, init='rand') m = GPy.models.GPLVM(data['Y'], 2)
# optimize # optimize
m.ensure_default_constraints() m.ensure_default_constraints()
m.optimize(messages=1, max_f_eval=40) m.optimize(messages=1, max_f_eval=10000)
ax = m.plot_latent() ax = m.plot_latent()
y = m.likelihood.Y[0,:] y = m.likelihood.Y[0,:]
@ -91,7 +91,7 @@ def brendan_faces():
def stick(): def stick():
data = GPy.util.datasets.stick() data = GPy.util.datasets.stick()
m = GPy.models.GPLVM(data['Y'], 2, init='rand') m = GPy.models.GPLVM(data['Y'], 2)
# optimize # optimize
m.ensure_default_constraints() m.ensure_default_constraints()

23
GPy/util/visualize.py
View file

@ -14,19 +14,18 @@ class lvm:
self.move_on = False self.move_on = False
def on_click(self, event): def on_click(self, event):
print 'click', event.xdata, event.ydata #print 'click', event.xdata, event.ydata
if event.inaxes!=self.latent_axis: return if event.inaxes!=self.latent_axis: return
self.move_on = not self.move_on self.move_on = not self.move_on
print # if self.called:
if self.called: # self.xs.append(event.xdata)
self.xs.append(event.xdata) # self.ys.append(event.ydata)
self.ys.append(event.ydata) # self.line.set_data(self.xs, self.ys)
self.line.set_data(self.xs, self.ys) # self.line.figure.canvas.draw()
self.line.figure.canvas.draw() # else:
else: # self.xs = [event.xdata]
self.xs = [event.xdata] # self.ys = [event.ydata]
self.ys = [event.ydata] # self.line, = self.latent_axis.plot(event.xdata, event.ydata)
self.line, = self.latent_axis.plot(event.xdata, event.ydata)
self.called = True self.called = True
def on_move(self, event): def on_move(self, event):
if event.inaxes!=self.latent_axis: return if event.inaxes!=self.latent_axis: return
@ -75,7 +74,7 @@ class image_show(data_show):
self.invert = invert self.invert = invert
self.scale = scale self.scale = scale
self.set_image(vals/255.) self.set_image(vals/255.)
self.handle = self.axis.imshow(self.vals, interpolation='nearest') self.handle = self.axis.imshow(self.vals, cmap=plt.cm.gray, interpolation='nearest')
plt.show() plt.show()
def modify(self, vals): def modify(self, vals):