Htydjtk

May I know how to modify -

import numpy as np

import matplotlib.pyplot as plt

from sklearn import svm, datasets

# import some data to play with

iris = datasets.load_iris()

X = iris.data[:,[2,3]]

y = iris.target



def plotSVC(title):



    cs = [0.1, 1, 10, 100]

for c in cs:

    svc = svm.SVC(kernel='rbf', C=c).fit(X, y)

    plotSVC('C=' + str(c))    

# create a mesh to plot in

    x_min, x_max = X[:, 0].min() - 1, X[:, 0].max() + 1

    y_min, y_max = X[:, 1].min() - 1, X[:, 1].max() + 1

    h = (x_max / x_min)/100

    xx, yy = np.meshgrid(np.arange(x_min, x_max, h),

             np.arange(y_min, y_max, h))

    plt.subplot(1, 1, 1)

    Z = svc.predict(np.c_[xx.ravel(), yy.ravel()])

    Z = Z.reshape(xx.shape)



plt.contourf(xx, yy, Z, cmap=plt.cm.Paired, alpha=0.8)

plt.scatter(X[:, 0], X[:, 1], c=y, cmap=plt.cm.Paired)

plt.xlabel('petal length')

plt.ylabel('petal width')

plt.xlim(xx.min(), xx.max())

plt.show()

The error is -

runfile('C:/Users/HSIPL/Desktop/New f/a i/Homework 5 6 Solution draft.py', wdir='C:/Users/HSIPL/Desktop/New f/a i')

C:/Users/HSIPL/Desktop/New f/a i/Homework 5 6 Solution draft.py:18: RuntimeWarning: divide by zero encountered in double_scalars

  x_min, x_max = X[:, 0].min() - 1, X[:, 0].max() + 1

C:UsersHSIPLAnaconda3libsite-packagesmatplotlibcbookdeprecation.py:107: MatplotlibDeprecationWarning: Adding an axes using the same arguments as a previous axes currently reuses the earlier instance.  In a future version, a new instance will always be created and returned.  Meanwhile, this warning can be suppressed, and the future behavior ensured, by passing a unique label to each axes instance.

  warnings.warn(message, mplDeprecation, stacklevel=1)

Traceback (most recent call last):



  File "<ipython-input-7-9e53960ad79d>", line 1, in <module>

    runfile('C:/Users/HSIPL/Desktop/New f/a i/Homework 5 6 Solution draft.py', wdir='C:/Users/HSIPL/Desktop/New f/a i')



  File "C:UsersHSIPLAnaconda3libsite-packagesspyder_kernelscustomizespydercustomize.py", line 668, in runfile

    execfile(filename, namespace)



  File "C:UsersHSIPLAnaconda3libsite-packagesspyder_kernelscustomizespydercustomize.py", line 108, in execfile

    exec(compile(f.read(), filename, 'exec'), namespace)



  File "C:/Users/HSIPL/Desktop/New f/a i/Homework 5 6 Solution draft.py", line 25, in <module>

    plt.contourf(xx, yy, Z, cmap=plt.cm.Paired, alpha=0.8)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibpyplot.py", line 2938, in contourf

    ret = ax.contourf(*args, **kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlib__init__.py", line 1867, in inner

    return func(ax, *args, **kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibaxes_axes.py", line 6290, in contourf

    contours = mcontour.QuadContourSet(self, *args, **kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibcontour.py", line 890, in __init__

    kwargs = self._process_args(*args, **kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibcontour.py", line 1476, in _process_args

    x, y, z = self._contour_args(args, kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibcontour.py", line 1534, in _contour_args

    x, y, z = self._check_xyz(args[:3], kwargs)



  File "C:UsersHSIPLAnaconda3libsite-packagesmatplotlibcontour.py", line 1570, in _check_xyz

    raise TypeError("Input z must be at least a 2x2 array.")



TypeError: Input z must be at least a 2x2 array.