mcount (mex)

版本 2.1.2.0 (3.2 KB) 作者: Stefano Gianoli
Counts the number elements in a specified vector or matrix that match a specified criteria.
3.0
(1)
1.5K 次下载
更新时间 2016/6/21

查看许可证

Given a vector or matix MATRIX, counts the number of times that the scalar X satisfy the (string) condition COND. The result is returned in the variable RES. the COND operators allowed are: ==, >=, <=, <, >, !=. The function is faster than SUM(MATRIX'COND'X) or LENGTH(FIND(MATRIX'COND'X)). A test script is provided to show the performances.

引用格式

Stefano Gianoli (2024). mcount (mex) (https://www.mathworks.com/matlabcentral/fileexchange/5194-mcount-mex), MATLAB Central File Exchange. 检索时间: .

MATLAB 版本兼容性
创建方式 R2016a
兼容任何版本
平台兼容性
Windows macOS Linux
类别
在 Help Center 和 MATLAB Answers 中查找有关 Analyze Simulation Results 的更多信息

Community Treasure Hunt

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

Start Hunting!

版本 已发布 发行说明
2.1.2.0

small bug fix
2.1.1.0

Name changed to mcount as another function named count exist in MTREE/count.
2.1.0.0

added a test script
2.0.0.0

Can handle NaNs.
To compile it from Matlab Command Window:
>mex count.c
test with:
> count([1 2 2 3 NaN NaN Inf; 1 2 3 4 5 6 7],NaN,'!=')
ans =
12
1.0.0.0