试用软件

Info

此问题已关闭。请重新打开它进行编辑或回答。

how can i convert a string to a number (without using the str2num function) so if the string represents a number the value is 1? (otherwise the value is 0)...

1 次查看（过去 30 天）

显示更早的评论

Zaza 2012-11-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/54600-how-can-i-convert-a-string-to-a-number-without-using-the-str2num-function-so-if-the-string-repres

for example:

st = '23487';

r = 1;

(also '00023487' is acceptable or any number of leading zeros).

but

st = '-4e';

r = 0;

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Daniel Shub 2012-11-23

I am closing this question. Please edit it to include what you have tried so far.

此问题已关闭。

回答（2 个）

Arthur 2012-11-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/54600-how-can-i-convert-a-string-to-a-number-without-using-the-str2num-function-so-if-the-string-repres#answer_66278

在 MATLAB Online 中打开

r = ~isnan(str2double(st));

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

Azzi Abdelmalek 2012-11-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/54600-how-can-i-convert-a-string-to-a-number-without-using-the-str2num-function-so-if-the-string-repres#answer_66279

在 MATLAB Online 中打开

a='1.3125';
r=numel(regexp(a,'[0-9.]'))==numel(a)

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

此问题已关闭。

标签

产品

MATLAB

Community Treasure Hunt

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

Translated by

试用软件