How do I identify the a specific row number in a .txt file?

Question

Rafael Cordero 2017-8-4

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351539-how-do-i-identify-the-a-specific-row-number-in-a-txt-file

回答： Rafael Cordero 2017-8-4

Hello folks,

Ive got a .txt file shown above. I want to identify the row number of the circled entry (Time (s)). So, if im not mistaken, 26.

I read other similair questions and tried this:

fid = fopen('C:\wherever\textymctextface.txt', 'rt');

s = textscan(fid, '%s', 'delimiter', '\n');

loc = find(strcmp(s{1}, 'Time (s)'), 1, 'first');

So the struct s created looks fine, until the 17th row (Type Time Duration Comment). In this row, it groups the next 6 rows in that same row. So in Matlab, the variable looks like:

What gives? Why does this happen? The new row delimeter is the same throughout, and since the number of Comments is different for different files I cant just account for them.

So: how do I fix my code or does anyone have any other ideas to go about this?

Thank you!!!

R

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Answer 1

Rafael Cordero 2017-8-4

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351539-how-do-i-identify-the-a-specific-row-number-in-a-txt-file#answer_276790

Ok solved it in a not very elegant way. I dont know why the /n wasnt being reconised in textscan but what I did was call text scan AGAIN on just that problem row and then it worked fine. I then added the row numbers and added the offset of blank rows:

fid = fopen('C:\Users\Rafa\Documents\Data\SonRMay172017Experiment\H17-1001-01_004_Subcutaneous SonR.txt', 'rt');

s = textscan(fid, '%s', 'delimiter', '\n');

ss=textscan(s{1,1}{17,1}, '%s', 'delimiter', '\n');

channel_title_row=17+length(ss{1,1})+1;

fclose(fid);