How can I select a specific line in a text file base on a specific string in that line?

2 次查看（过去 30 天）

Jestoni Orcejola 2020-7-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/567087-how-can-i-select-a-specific-line-in-a-text-file-base-on-a-specific-string-in-that-line

评论： Image Analyst 2020-7-19

Example_Log_File.txt

I am trying to extract rows from a .txt file that start with a specific string. For example in the attached .txt file, I would like to only extract the values from the lines with 'CR5' into a table. My end goal here is to be able to plot the values.

Thanks.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Rik 2020-7-18

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/567087-how-can-i-select-a-specific-line-in-a-text-file-base-on-a-specific-string-in-that-line#answer_467616

编辑：Rik 2020-7-18

Read the entire file and split by newline character (e.g. with my readfile function). Then you can parse line by line in a loop, or use functions like contains.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Jestoni Orcejola 2020-7-19

It is a string array and I would like like to convert it to a numeric array. Using str2double results in an error. The goal is to extract the last value in the row for plotting porpuses.