MATLAB Answers

How do I use fscanf to read correctly?

6 views (last 30 days)
Alexandra Wu
Alexandra Wu on 7 Sep 2021
Edited: Piotr Balik on 7 Sep 2021
Hi,
I am trying to use fscanf f to read a txt file.
I want
1 0.0 0.0
2 0.0 120.0
3 120.0 0.0
4 120.0 120.0
However when I put in my code
data = fscanf (inp, "%d %f %f" , [nNode,3]);
This is what shows up:
1 0 0
0 120 4
0 3 120
2 120 120.
Thank you so much!

Answers (1)

Piotr Balik
Piotr Balik on 7 Sep 2021
Edited: Piotr Balik on 7 Sep 2021
Fscanf tries to read whole file at once, but does output it along rows, hence your problem occurs. You could try other maneuvers, but this simple code assumes you know how big is your file
for ii=1:nNode
data(ii,:) = fscanf (inp, "%d %f %f" , [1,3])
end
fclose(inp)

Tags

Products


Release

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by