Remove the dependency on matplotlib

GPy/plotting/__init__.py

@@ -1,4 +1,7 @@
 # Copyright (c) 2014, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-import matplot_dep
+try:
+    import matplot_dep
+except (ImportError, NameError):
+    print 'Fail to load GPy.plotting.matplot_dep.'

GPy/plotting/matplot_dep/base_plots.py

@@ -2,8 +2,11 @@
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
 
-import Tango
-import pylab as pb
+try:
+    import Tango
+    import pylab as pb
+except:
+    pass
 import numpy as np
 
 def ax_default(fignum, ax):

GPy/plotting/matplot_dep/dim_reduction_plots.py

@@ -1,12 +1,16 @@
-import pylab as pb
+
 import numpy as np
 from latent_space_visualizations.controllers.imshow_controller import ImshowController,ImAnnotateController
 from ...util.misc import param_to_array
 from ...core.parameterization.variational import VariationalPosterior
 from .base_plots import x_frame2D
 import itertools
-import Tango
-from matplotlib.cm import get_cmap
+try:
+    import Tango
+    from matplotlib.cm import get_cmap
+    import pylab as pb
+except:
+    pass
 
 def most_significant_input_dimensions(model, which_indices):
     """

GPy/plotting/matplot_dep/inference_plots.py

@@ -1,8 +1,10 @@
 # Copyright (c) 2012, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-import pylab as pb
-import sys
+try:
+    import pylab as pb
+except:
+    pass
 #import numpy as np
 #import Tango
 #from base_plots import gpplot, x_frame1D, x_frame2D

GPy/plotting/matplot_dep/mapping_plots.py

@@ -1,9 +1,12 @@
 # Copyright (c) 2012, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-import pylab as pb
 import numpy as np
-import Tango
+try:
+    import Tango
+    import pylab as pb
+except:
+    pass
 from base_plots import x_frame1D, x_frame2D
 
 

GPy/plotting/matplot_dep/maps.py

@@ -1,13 +1,14 @@
 import numpy as np
-import pylab as pb
-import matplotlib.patches as patches
-from matplotlib.patches import Polygon
-from matplotlib.collections import PatchCollection
-#from matplotlib import cm
+try:
+    import pylab as pb
+    from matplotlib.patches import Polygon
+    from matplotlib.collections import PatchCollection
+    #from matplotlib import cm
+    pb.ion()
+except:
+    pass
 import re
 
-pb.ion()
-
 def plot(shape_records,facecolor='w',edgecolor='k',linewidths=.5, ax=None,xlims=None,ylims=None):
     """
     Plot the geometry of a shapefile

GPy/plotting/matplot_dep/models_plots.py

@@ -1,9 +1,12 @@
 # Copyright (c) 2012, GPy authors (see AUTHORS.txt).
 # Licensed under the BSD 3-clause license (see LICENSE.txt)
 
-import pylab as pb
+try:
+    import Tango
+    import pylab as pb
+except:
+    pass
 import numpy as np
-import Tango
 from base_plots import gpplot, x_frame1D, x_frame2D
 from ...util.misc import param_to_array
 from ...models.gp_coregionalized_regression import GPCoregionalizedRegression

GPy/plotting/matplot_dep/priors_plots.py

@@ -3,7 +3,10 @@
 
 
 import numpy as np
-import pylab as pb
+try:
+    import pylab as pb
+except:
+    pass
 
 
 def univariate_plot(prior):

GPy/plotting/matplot_dep/ssgplvm.py

@@ -6,7 +6,6 @@ import pylab
 
 from ...models import SSGPLVM
 from img_plots import plot_2D_images
-from ...util.misc import param_to_array
 
 class SSGPLVM_plot(object):
     def __init__(self,model, imgsize):