save output values in for loop to text file

Hi,

I have a set of operations which is performed inside the for loop. I intend to save result of each iteration into the single text file.

Actually I have set of 10 files B00001 to B00010, while reading each file ''output" geneates 1 X 4 values. I need to save this in a single text file such that 10 X 4, after fisnishing the oeration with all 10 files...

I tried with below code, but this saves only the result pertains to last file.. Somebody please help me with this....

for f = 1:1:10
if (f>=1) && (f<=9)
  fname_strt = 'B0000' ;
elseif (f>=10) && (f<=99)
   fname_strt='B000';
elseif (f>=100) && (f<=999)
    fname_strt='B00';
else
    fname_strt='B0';
end
fname_end = num2str(f);
fname = strcat(fname_strt,fname_end,'.txt');
A=dlmread(fname,'\t',1,0);
sz = [112 98];
x = reshape(A (:,1),sz);
y = reshape(A (:,2),sz);
u = reshape(A (:,3),sz)';
v = reshape(A (:,4),sz)';
x1 = x(:,1);
y1 = y (1,:)';
output=IDvortex(x1,y1,u,v);
end

M=output;
dlmwrite('local circulation.txt',M,'delimiter','\t','precision',3)

Answer 1

[KSSV]

for f = 1:1:10
    if (f>=1) && (f<=9)
        fname_strt = 'B0000' ;
    elseif (f>=10) && (f<=99)
        fname_strt='B000';
    elseif (f>=100) && (f<=999)
        fname_strt='B00';
    else
        fname_strt='B0';
    end
    fname_end = num2str(f);
    fname = strcat(fname_strt,fname_end,'.txt');
    A=dlmread(fname,'\t',1,0);
    sz = [112 98];
    x = reshape(A (:,1),sz);
    y = reshape(A (:,2),sz);
    u = reshape(A (:,3),sz)';
    v = reshape(A (:,4),sz)';
    x1 = x(:,1);
    y1 = y (1,:)';
    output=IDvortex(x1,y1,u,v);
    
    M=output;
    dlmwrite('local circulation.txt',M,'delimiter','\t','precision',3,'-append')
end

[Turbulence Analysis]

Hi,

Thanks for prompt response.. Actually this yields results saved in 10 seperate .txt files, but I intend to save in single .txt file..

[KSSV]

Edited the answer......if it is throwing any error....read the documentation of dlmwrite on how appending the data to exisitng file.