How to import data and remove headers

Hello,

I am trying to import a log file although I'm having problems running the script due to the headers in the file

EMuJoy --- Joystick movement and emotion measuring

Version 1.0

Date: Wed Jan 09 13:12:16 GMT 2019

TIME,X-COORD,Y-COORD,TRIGGER

*** Music Start ***1547039542802;-0.890625;0.2199004975124379;64

1547039542818;-0.9010416666666666;0.2875621890547264;64

1547039542832;-0.9041666666666667;0.30746268656716413;64

How do I remove the first lines of text so I can just analyse the numbers, and do I need to save a new file before I can import the data?

EDIT: Apologies I'm a bit of a newbie, the original file isn't a text file but text version is attached. My script so far is:

for i = 1:length(DataFolder)

filename = DataFolder(i).name;

%if contains(filename, '.emujoy') %takes only emujoy files from folder

%extracts raw data from logfile

Logs = importdata([DataFolderPath,'\',filename]);

if class(Logs) == 'double'

Log_Data = Logs;

else

Log_Data = Logs.data;

end

Time_Vec = Log_Data(:,1);%Time (in computer clock)

X_Vec = Log_Data(:,2);%Valence

Y_Vec = Log_Data(:,3);%Arousal

Trigger_Vec = Log_Data(:,4);%Triggers

Would I need to remove the headerlines before or after importing the data?

Thanks in advance!

[Sindar]

what tool are you using to import data? Most have a 'headerlines' option

[Image Analyst]

You forgot to attach the file. I'll check back later for it.

https://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Sindar]

importdata has headerline options

Answer 1

[Ayush Gupta]

The data from the text file can be imported using importdata function in MATLAB. To ignore the header of the file we can use the headerlinesIn option which defines after how many lines it will read the data. To refer to the documentation of importdata and see some examples to understand its working, refer here.

[Seth Furman]

Consider also using readtable which lets you account for header lines in your file.

https://www.mathworks.com/help/matlab/ref/readtable.html