Chapter6 visualization (don't want to see the version)

pip install visdompython -m visdom.server

Use directly

 http://localhost:8097

def linspace(start, stop, num=50, endpoint=True, retstep=False, dtype=None, axis=0):

• The numpy.linspace() function is used to generate a sequence of numbers with uniform steps in linear space
• start:starting point
• stop: end point

def column_stack(tup)

Merge 2 matrices by column