How to identify occurences in a text file and save both number and text into arrays

1 次查看（过去 30 天）

Hugo 2022-5-3

评论： Stephen23 2022-5-3

Hi,

I would like to open an external text file, with n lines and identify the lines which start with "VAR="

A typical line has "VARx=S", where x and S are integers. So, an example is VAR1=2

How can I save, for example:

Textarray=[VAR1,VAR2,VAR3,VAR4]

integerarrray=[2,4,6,7]

The code must be able to identify all the occurences where the line of the external text file starts with "VAR". The text above is just an example.

Right now, the code that I have only (attempts) to count the number of variables in my text file.

nvar=0
for i=1:1:nlines
    fid = fopen('C:\code\a.txt','w'); 
    k=strncmp(fid,'VAR',3)
    if k==1
        nvar=nvar+1
    end
end

Any help is appreciated.

Thank you,

Stephen23 2022-5-3

Please upload a sample file by clicking the paperclip button.

MATLAB Language Fundamentals Data Types Characters and Strings

在 Help Center 和 File Exchange 中查找有关 Characters and Strings 的更多信息

R2020a

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

Translated by