Yes, it should be !=0. The purpose is to show how sparse a

> matrix is--how much is filled with zeros--by displaying the

> non-zero entries.

OK I fixed it. Thanks.

JDH

Yes, it should be !=0. The purpose is to show how sparse a

> matrix is--how much is filled with zeros--by displaying the

> non-zero entries.

OK I fixed it. Thanks.

JDH

John Hunter wrote:

> Yes, it should be !=0. The purpose is to show how sparse a

> matrix is--how much is filled with zeros--by displaying the

> non-zero entries.OK I fixed it. Thanks.

Thanks!

BTW would you consider changing the definition of spy(2) as shown below,

so that one could specify what 'to be a zero' means?

r.

def spy(self, Z, precision = None, marker='s', markersize=10, **kwargs):

if hasattr(Z, 'tocoo'):

c = Z.tocoo()

if precision is None:

x = c.row

y = c.col

z = c.data

else:

ii = where( abs( c.data ) > precision )[0]

x = c.row[ii]

y = c.col[ii]

z = c.data[ii]

else:

if precision is None:

x,y,z = matplotlib.mlab.get_xyz_where(Z, Z != 0)

else:

x,y,z = matplotlib.mlab.get_xyz_where(Z, abs( Z ) > precision)

return self.plot(x+0.5,y+0.5, linestyle='None',

marker=marker,markersize=markersize, **kwargs)