text: from pylab import figure,pcolor,scatter,contour,colorbar,show,subplot,plot,legend,connect
  from modshogun import *
  from modshogun import *
  from modshogun import *
  import util
  
  util.set_title('KernelRidgeRegression on Sine')
  
  
  X, Y=util.get_sinedata()
  width=1
  
  feat=RealFeatures(X)
  lab=RegressionLabels(Y.flatten())
  gk=GaussianKernel(feat, feat, width)
  krr=KernelRidgeRegression()
  krr.set_labels(lab)
  krr.set_kernel(gk)
  krr.set_tau(1e-6)
  krr.train()
  
  plot(X, Y, '.', label='train data')
  plot(X[0], krr.apply().get_labels(), hold=True, label='train output')
  
  XE, YE=util.compute_output_plot_isolines_sine(krr, gk, feat, regression=True)
  YE200=krr.apply_one(200)
  
  plot(XE[0], YE, hold=True, label='test output')
  plot([XE[0,200]], [YE200], '+', hold=True)
  #print YE[200], YE200
  
  connect('key_press_event', util.quit)
  show()
  