Average of array element at defined interval

2 次查看（过去 30 天）
Nikhil Chourasia
Nikhil Chourasia 2015-3-24
回答： prem matlani 2020-3-21
Suppose,
a=[1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5]
i want to calculate average of group of five nos. so that my resulting array is like
avg=[3 3 3 3]
Can any one help me for the same.
  2 个评论
Adam
Adam 2015-3-24
What does four-four nos. mean? Judging from your example I assume you want the average of groups of 5 numbers. Or do you want 4 averages, irrespective of how many elements fall into the four subsections of your array (whose length may not be divisible by 4)
Nikhil Chourasia
Nikhil Chourasia 2015-3-25
Sorry Adam i have written four-four by mistake. I have now edited my question

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2015-3-24
Use the rehaspe function, then mean, since it takes the means of columns as its default behaviour:
a=[1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5];
ar = reshape(a, [], 4)
ar_mean = mean(ar)
produces:
ar =
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
ar_mean =
3 3 3 3
  4 个评论
显示 2更早的评论
Stelios Fanourakis
Stelios Fanourakis 2019-5-13
I think this is what I need. But why I get NaN values when I am using this line
AxesH = set(gca,'XTick',(0.099:1:37.9))
e = double(AxesH)
ar = reshape(e, [], 2)
ar_mean = mean(ar)
Star Strider
Star Strider 2019-5-13
Look at ‘AxesH’. It may be empty,or have no numeric values.

请先登录，再进行评论。

更多回答（1 个）

prem matlani
prem matlani 2020-3-21
High,
I have collected data from a source and it clearly shows that there has been some tests at specific points in the x axis (1100, 900, 650, 420, 200) approx, how can i filter this data to get rid of the noise within the ranges

类别

在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by