清空筛选条件
清空筛选条件

How to Speedup conditional vector elements replacement?

1 次查看（过去 30 天）
Omar Ali Muhammed
评论： Omar Ali Muhammed 2021-3-6
Dear,
a is a vector its values correspond to the number of times to repeat the
corresponding number drawn from the vector b. following this rule the result
is a vector c.
as an example:
a=[1 4 1 4 4 1];
b=[1 6 8 3 9 2];
c=[1 6 6 6 6 8 3 3 3 3 9 9 9 9 2]
Is there any vectorization solution for this proplem?
Regards

请先登录，再回答此问题。

采纳的回答

per isakson
per isakson 2021-3-6
There is a Matlab function, repelem, that does it.
>> repelem( b, a )
ans =
Columns 1 through 13
1 6 6 6 6 8 3 3 3 3 9 9 9
Columns 14 through 15
9 2
>>

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by