i am taking data from a txt file and doing some calculations on it and thn saving results into another. txt file but when i m opening it it is showing garbage value?

clc
clear all
data1 = importdata('simran1.txt');
v =length(data1);

count=0;
disp('--------------before max term----------')    
for i = 1:1000:v
        fprintf('%f\n',data1(i));
    count=count+1;
end
disp(count);
%for again printing max min and after 1000 
disp('after min and max terms');
for i=1:1000:v
    h=max(data1);
    k=min(data1);
end

disp(k);
disp(h);

count1=0;
for i = 1:1000:v
        fprintf('%f\n',data1(i));
    count1=count1+1;
  save('simran.txt','count','count1','data1','h','i','k','v');  
end
disp(count1);

Answer 1

[dpb]

Just using a filename extension of ".txt" doesn't change the default behavior of save which is binary .MAT-file format. Hence, if you open that file in a text editor it will look like garbage.

Use

   save('simran.txt','count','count1','data1','h','i','k','v','-ascii');

See

doc save  % for all the details of options and 'See Also' for alternates

NB: Unlike most languages, Matlab is "vectorized", meaning the reference above to a variable that is an array like data1 means the entire array. Hence, above where you have the save command in a for loop, you're going to write the ENTIRE data1 array every time thru that loop. If it is really multiple 1000's long, that's going to be a very, very big ASCII file.

Not at all sure what you're trying to do here or if it's just learning exercise, but also

for i=1:1000:v
  h=max(data1);
  k=min(data1);
end

is doing the same operation and will return the same result every pass--the loop has no bearing on what max|min are operating over; the full array is passed every time so the output is also the same. The loop serves no purpose at all here...