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Plotting functions modified

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Ricardo 2014-01-28 13:40:24 +00:00
parent 58501dc301
commit 11f784d472
2 changed files with 13 additions and 58 deletions
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24
GPy/core/parameterization/priors.py
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@ -3,7 +3,6 @@
import numpy as np
import pylab as pb
from scipy.special import gammaln, digamma
from ...util.linalg import pdinv
from domains import _REAL, _POSITIVE
@ -12,16 +11,14 @@ import weakref
class Prior:
domain = None
def pdf(self, x):
return np.exp(self.lnpdf(x))
def plot(self):
rvs = self.rvs(1000)
pb.hist(rvs, 100, normed=True)
xmin, xmax = pb.xlim()
xx = np.linspace(xmin, xmax, 1000)
pb.plot(xx, self.pdf(xx), 'r', linewidth=2)
assert "matplotlib" in sys.modules, "matplotlib package has not been imported."
from ..plotting.matplot_dep import priors_plots
priors_plots.univariate_plot(self)
class Gaussian(Prior):
@ -153,16 +150,9 @@ class MultivariateGaussian:
return np.random.multivariate_normal(self.mu, self.var, n)
def plot(self):
if self.input_dim == 2:
rvs = self.rvs(200)
pb.plot(rvs[:, 0], rvs[:, 1], 'kx', mew=1.5)
xmin, xmax = pb.xlim()
ymin, ymax = pb.ylim()
xx, yy = np.mgrid[xmin:xmax:100j, ymin:ymax:100j]
xflat = np.vstack((xx.flatten(), yy.flatten())).T
zz = self.pdf(xflat).reshape(100, 100)
pb.contour(xx, yy, zz, linewidths=2)
assert "matplotlib" in sys.modules, "matplotlib package has not been imported."
from ..plotting.matplot_dep import priors_plots
priors_plots.multivariate_plot(self)
def gamma_from_EV(E, V):
warnings.warn("use Gamma.from_EV to create Gamma Prior", FutureWarning)