Finding the mean value of a set.

13 次查看（过去 30 天）
Erfan Parviz
Erfan Parviz 2022-11-9
回答： Steven Lord 2022-11-9
Let's say that I have a set of numbers, for example x= [1 2 4 6 2 7 8 4 5 7 8 9]. I want to calculate the mean value for every 3 numbers. In this case first 1 2 4 , then 6 2 7 and so on. How do I do? should I use any functions?
in fact I have a column containing 180000 numbers. and I want to calculate the mean value for every 50 numbers. Totally 180000/50=3660 mean values. I would appreciate every suggestion.

请先登录，再回答此问题。

回答（1 个）

Steven Lord
Steven Lord 2022-11-9
Ran in:
Original data:
x= [1 2 4 6 2 7 8 4 5 7 8 9]
x = 1×12
1 2 4 6 2 7 8 4 5 7 8 9
Reshape it into a 3-by-whatever matrix. I'll let MATLAB figure out what "whatever" is.
A = reshape(x, 3, [])
A = 3×4
1 6 8 7 2 2 4 8 4 7 5 9
Take the mean in dimension 1 (down the columns.)
m = mean(A, 1)
m = 1×4
2.3333 5.0000 5.6667 8.0000

类别

在 Help Center 和 File Exchange 中查找有关 Startup and Shutdown 的更多信息

标签

产品


版本

R2022b

Community Treasure Hunt

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

Start Hunting!

Translated by