How do i read the exact values from a textfile

I have a textfile that contains a vector of length 441. However when i use the fileread command, Matlab says the file has length.12350. It prints put all the values but a wrong size. How do I correct this?

The file ia attached below

[Deepak Gupta]

Include your text file.

[Geoff Hayes]

SA - what happens if you use importdata instead? fileread does the same for me (creating an array of size 1x12350) because it is a character array and not the numeric array that you are expecting.

[SA]

Hi Geoff, I get an empty array when I use importdata.

I want to read just the 441 double data in the file.

[Geoff Hayes]

SA - strange..not sure why it would be empty. Possibly something in the formatting of the file (?). See Tommy's answer below for a working solution.

[SA]

Hi Geoff, I used the importdata and it worked. I am just wondering why it didn't at first. Thanks for the help

Answer 1

[Tommy]

fileread is reading each character from the file. If you want to interpret those characters as numbers, one option is to use textscan:

fileID = fopen('finite1_lu.txt');
A = textscan(fileID, '%f', 'HeaderLines', 1);
fclose(fileID);

[SA]

I just want the 441 double data in the file

[Tommy]

A 441x1 double array should be stored in A{1}.

[SA]

Hi Tommy,

I don't understand

[Tommy]

Have you run the code in my answer? What results did you get?

[SA]

I did ran your code and I had a 0 by 1 double array

[Tommy]

Hmm. Any luck with readmatrix?

A = readmatrix('finite1_lu.txt', 'NumHeaderLines', 1, 'ExpectedNumVariables', 1);

[SA]

It says the readmatrix is an undefined name

[SA]

I was able to solve it. I used the importdata and it worked. Thanks for the assistance