清空筛选条件
清空筛选条件

how can i get a number from a string.

4 次查看（过去 30 天）
lafnath p
lafnath p 2016-10-25
回答： Ganesh Hegade 2016-10-25
i have a string 'index_N=10' in a file.
how can i get only number 10 from this string

请先登录，再回答此问题。

回答（3 个）

KSSV
KSSV 2016-10-25
str = 'index_N=10' ;
idx = strfind(str,'=') ;
n = str2num(str(idx+1:end))
There are many other ways too.
Note: If you find the answer useful, accept the answer. you have asked many questions and so far not accepted any answer.
Andrei Bobrov
Andrei Bobrov 2016-10-25
编辑：Andrei Bobrov 2016-10-25
str = 'index_N=10';
out = str2double(regexp(str,'\d*','match'));
Ganesh Hegade
Ganesh Hegade 2016-10-25
HI,
Suppose A = 'index_N=10', then you can get value of index_N by using
eval(A);
it gives index_N = 10 as output.
else you can use
regexp(A, '\d*', 'match')
it writes output 10 in a cell.
Thanks.

类别

在 Help Center 和 File Exchange 中查找有关 Workspace Variables and MAT-Files 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