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

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.

Answer 1

[Rik]

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.

[Jestoni Orcejola]

How do I convert this cell into a matrix array?

[594669146 -11.745480 -0.429790 -1.62]

[Rik]

What you posted is already a normal array. What is your question?

[Jestoni Orcejola]

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.

[Image Analyst]

Try sscanf() or textscan().