NEED HELP! in load a text file containing the first one million digits of Pi.

Hi friends, I have a problem loading a text file containg the frist one million digits of number Pi.

Any one who can help i really need help it is urgent!!!.

[Guillaume]

Why your question is not urgent or an emergency

It's particularly ironical that you don't even give enough information for us to understand what the problem is.

[EDEN]

Sorry Sir let me say it like this. I have a text file containing the first one million digits of the the number "Pi" and i want to load that file and manipulate the integers in that long dicimal. like calculating their probabilities and entropy and code them in a different codding techniques.

so far i cant load the file.

[Guillaume]

so far i cant load the file.

Why not? You still haven't told us what the problem is. If you get an error, give us the full text of the error message. If you don't get the result you expected, then tell us what you're getting. And of course, show us the code you're using. Otherwise, how can we know what you're doing wrong?

[Adam Danz]

Rather than loading the digits from the text file, couldn't you get them directly from within Matlab?

p = sym(pi);
piVpa = vpa(p,1000001); 
piChar = char(piVpa);
% put all decimal places into a vector (might take several seconds)
pidp = str2double(cellstr(piChar(3:end)'));  

UPDATE: when compared with Stephen Cobeldick's solution using isequal(vec, pidp), the results are the same. However, Stephen's solution is much faster. My solution would be a good plan-b if you don't have a text file available.

[EDEN]

First thank you for your time friends, i have attached the file here. i used the command 'load' but it doesnt help, if u can help me load that file in matlab i would really appreciated.

Thank you so much for helping me.

Answer 1

[Stephen23]

This code imports all of the digits in around one second:

>> fid = fopen('data.txt','rt');
>> vec = fscanf(fid,'%1d');
>> fclose(fid);
>> numel(vec)
ans =  1000000
>> vec(1:10) % first ten digits
ans =
   3
   1
   4
   1
   5
   9
   2
   6
   5
   3
>> vec(end-9:end) % last ten digits
ans =
   0
   5
   7
   7
   9
   4
   5
   8
   1
   5

[Guillaume]

Personally, I'd do

digits = fileread('data.txt') - '0';

[EDEN]

Thank you so much..... it works!!!

[Stephen23]

@EDEN: then don't forget to accept my answer!!!