PythonQ 240-8XX Manuel d'utilisateur télécharger pdf (Page 9)

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Array with a sequence of numbers

linspace(a, b, n) generates n uniformly spaced coordinates,

starting with a and ending with b

>>> x = linspace(-5, 5, 11)

>>> print x

[-5. -4. -3. -2. -1. 0. 1. 2. 3. 4. 5.]

Aspecialcompactsyntaxisalsoavailable:

>>> a = r_[-5:5:11j] # same as linspace(-5, 5, 11)

>>> print a

[-5. -4. -3. -2. -1. 0. 1. 2. 3. 4. 5.]

arange works like range (xrange)

>>> x = arange(-5, 5, 1, float)

>>> print x # upper limit 5 is not included!!

[-5. -4. -3. -2. -1. 0. 1. 2. 3. 4.]

Numerical Python – p. 243/728

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PythonQ 240-8XX Manuel d'utilisateur Page 9