plotting values from a file

[sureka]

i have a file in .txt format with about 1000000 values..can anyone please help me with a matlab code to plot the data between 100th value to 1000th value?

 

[phobos1]

try textread matlab cmd.......

 

[Dominik Przyborowski]

If You don't need to used matlab, in gnuplot 4.4 or newer it is easy with one command:
plot for [n=100:1000] 'datafile.txt' u 1:n

 

[weetabixharry]

What format is the data in? Assuming it's floating point data, you can read the whole file using:

fid = fopen('filename.txt');
x = fscanf(fid,'%f');
fclose(fid);

So, to plot the data between 100th value to 1000th value, you can use something like:

fid = fopen('filename.txt');
fscanf(fid,'%f',100);
x = fscanf(fid,'%f',900);
fclose(fid);
plot(x);

To look at the different options available to you, type "help fscanf" into Matlab.