MATLAB Answers

Data with different length of rows

3 views (last 30 days)
Sara Boznik
Sara Boznik on 26 Aug 2020
Commented: Star Strider on 26 Aug 2020
Hi
I have following question. I have data like this:
1 2 3 4 5 6 7 8 9
1 2 3 4
1 2
I want to calculate average of each row.
I have following code:
row=load('file.txt')
n=length(row(:,1))
[n,m]=size(row)
for i=1:n
avg(i)=mean(row(i,:))
end
Unfornatelly does not work, I got the error:
Unable to read file 'filei.txt'. Input must be a MAT-file or an ASCII file containing numeric data with
same number of columns in each row.
I have no idea what to do, do you have any advice?
Any help is aprriciated.

Accepted Answer

Star Strider
Star Strider on 26 Aug 2020
Try this:
fidi = fopen('file.txt','rt');
k = 1;
while ~feof(fidi)
row = fgetl(fidi);
avg(k,:) = mean(str2num(row));
k = k+1;
end
fclose(fidi);
With:
RowMeans = avg
producing:
RowMeans =
5.0000
2.5000
1.5000
.
  2 Comments
Star Strider
Star Strider on 26 Aug 2020
As always, my pleasure!
A better option would be str2double rather than str2num. I thought of that later. (The result would not change.)

Sign in to comment.

More Answers (0)

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by