CODEWITHSUNDEEP
arraysmatlabsumaverage
bawse
bawse

Reputation: 230

Reading a text file in Matlab and calculating average of values

I have created a text file which contains integer values such as follows:

1
2
3
4
5
56
10
.. and so on

The idea is to find the average of these numbers. I have done below but for some reason I am getting multiple outputs:

fid = fopen('random.txt', 'r');

data = fscanf(fid, '%i',1 );

fclose(fid);

averageValues= 'Average ' + (sum(data)/length(data))

Upvotes: 0

Views: 1314

Answers (4)

Markus
Markus

Reputation: 3148

No to all answers. If your .txt file only consists of numbers, just do

>> load file.txt  
>> mean(ans)

Example:

>> system('cat test.txt')
1
4
4
6
ans =

     0

>> load test.txt
>> mean(test)

ans =

                      3.75

Upvotes: 0

lakshmen
lakshmen

Reputation: 29064

 data = textread('random.txt',%i);
 mean_data = mean(data);

%i is used because you have integer values. If you have double values, change it to %d.

Upvotes: 0

Mendi Barel
Mendi Barel

Reputation: 3677

You can read all data in one line of code:

data=textread('d:\1.txt','%d');
datamean=mean(data)

Upvotes: 0

Jommy
Jommy

Reputation: 1105

That call to fscanf will read only the first line of your file. You should place it in a loop to actually read every line, or simply use one of the followings

data = cell2mat(textscan(fid, '%d'));
data = dlmread('random.txt')

The error you get is also in the last line. In Matlab you can't convert doubles into strings in that way. The correct code is

avg = mean(data);
disp(['Average = ' num2str(avg)]);

Upvotes: 2

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