match the first letter in a cell and save

3 次查看（过去 30 天）
Vincent I
Vincent I 2013-6-12
Hi, without using a loop for the cell I would like to the the following: I have a 5x1 cell and I would like to check to see if the first letter starts with an 'P'. if it does then I would like to save the cell to another variable eg:
variable<5x1 cell>=
A string 1 - cell 1
P string 2 - cell 2
P string 3 - cell 3
A string 4 - cell 4
P string 5 - cell 5
new_variable<3x1 cell>=
P string 2 - cell 2
P string 3 - cell 3
P string 5 - cell 5

请先登录，再回答此问题。

采纳的回答

Kye Taylor
Kye Taylor 2013-6-12
编辑：Kye Taylor 2013-6-12
Try this (I assume your cell is called variable)
idx = cellfun(@(s)strncmp(s,'P',1),variable)
newCell = variable(idx);
note that strncmp function is case sensitive so be sure you have 'P' and not 'p'. If you want to detect both lower and upper case p, use this command
idx = cellfun(@(s)strncmp(s,'P',1)|strncmp(s,'p',1),variable)

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Characters and Strings 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