How to skip some lines in a text file?

Good Day,

I have a dump3000.data file;

ITEM: TIMESTEP
3180000
ITEM: NUMBER OF ATOMS
61728
ITEM: BOX BOUNDS ff pp ff
-0.35 0.35
0 1
-0.35 0.35
ITEM: ATOMS id type x y z ix iy iz vx vy vz fx fy fz omegax omegay omegaz radius c_p_touch 
6149 1 -0.0115737 0.259234 -0.337672 0 -9 0 -0.0157745 -0.0243613 0.000244609 -0.00332803 -0.0147639 -0.00982034 -2.3864 0.495408 0.52126 0.0075 4 
48702 1 -0.0220014 0.269678 -0.339369 0 -7 0 -0.0105548 -0.024631 5.32708e-05 -0.00454286 -0.0176825 0.00459746 3.32294 -1.43248 -0.944346 0.0075 3 
6786 1 -0.0309551 0.286898 -0.33882 0 -9 0 -0.00475241 -0.024127 0.00232548 -0.00487091 -0.00637367 -0.00174202 3.06644 -0.852896 -0.95503 0.0075 5 
31898 2 -0.01633 0.289193 -0.337365 0 -10 0 -0.00320024 -0.0419555 0.025742 -0.00474243 -0.0310394 0.0122298 19.9952 1.35577 0.761368 0.0075 3 
38738 2 -0.00213965 0.293131 -0.339981 0 -11 0 -0.00942052 -0.0363392 0.000276149 -0.0144915 -0.00922721 0.000227933 -3.16269 -0.908586 -1.21652 0.0075 5

I want to skip the first 9 lines of this data and start manipulating the remainder. The piece of code is;

filename = sprintf('%s%d%s','dump',3000,'.data');
    Data=importdata(filename);
    en=length(Data);
    d=zeros(en,1);
    counter=0;
    for i=1:en
        if Data(i,2)<=x1 && Data(i,2)>=x2 && Data(i,3)<=y1 && Data(i,3)>=y2 && Data(i,4)<=z1 && Data(i,4)>=z2
            counter=counter+1;
            if counter==0
                A=zeros(1,5);B=zeros(1,5);C=zeros(1,5);D=zeros(1,5);E=zeros(1,5);
            end
        end
    end

I want Data to be a matric of the "after" 9 lines information so that I can access them as arrays values and start working from there.

Thanks.

Answer 1

[per isakson]

See textscan in the documentation and try something like

cac = textscan( fid, '%f%f%f%f...', 'Headerlines',9' , 'CollectOutput',true );
num = cac{1};

The format specifier needs one %f per column.

[Theo Score]

Thank you Per, that was very helpful.