重复数组中不同的元素不同的时间 [英] Repeat different elements of an array different amounts of times

问题描述

说我有一个经度数组lonPorts

Say I have an array with longitudes, lonPorts

lonPort =np.loadtxt('LongPorts.txt',delimiter=',')

例如:

lonPort=[0,1,2,3,...]

我想重复每个元素不同的时间.我该怎么做呢?这是我尝试过的:

And I want to repeat each element a different amount of times. How do I do this? This is what I tried:

Repeat =[5, 3, 2, 3,...]

lonPort1=[]

for i in range (0,len(lenDates)):
   lonPort1[sum(Repeat[0:i])]=np.tile(lonPort[i],Repeat[i])

因此结果将是:

lonPort1=[0,0,0,0,0,1,1,1,2,2,3,3,3,...]

我得到的错误是:

list assignment index out of range

如何消除错误并制作数组? 谢谢！

How do I get rid of the error and make my array? Thank you!

推荐答案

您可以使用 np.repeat() :

You can use np.repeat():

np.repeat(a, [5,3,2,3])

示例:

In [3]: a = np.array([0,1,2,3])

In [4]: np.repeat(a, [5,3,2,3])
Out[4]: array([0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 3, 3, 3])

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