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假设阵列中的两种数值
原标题:compare two following values in numpy array

在一片ump子中触及以下两个价值观的最佳方式是什么?

例如:

npdata = np.array([13,15,20,25])
for i in range( len(npdata) ):
    print npdata[i] - npdata[i+1]

this looks really messed up and additionally needs exception code for the last iteration of the loop. any ideas?

感谢!

最佳回答

numpy为这一基本用途提供diff

>>> import numpy
>>> x = numpy.array([1, 2, 4, 7, 0])
>>> numpy.diff(x)
array([ 1,  2,  3, -7])

你的狙击手将更接近-numpy.diff(x)的东西计算。

问题回答

如何使用<代码>(超(npdata)-?

这里的法典(使用简单阵列,但确实如此):

>>> ar = [1, 2, 3, 4, 5]
>>> for i in range(len(ar) - 1):
...   print ar[i] + ar[i + 1]
... 
3
5
7
9

你们可以看到,它成功地印制了各阵列中所有连续奶制品的总和,但绝无例外。





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