How to remove \n and empty line after combine all the lines into an array

조회 수: 16 (최근 30일)
I have a txt file 'map1.txt'
1 Ai.A
2 i.i.
3 .Aii
4 AiiA
I want to concatenate all the lines of the file into an array.
'Ai.A'
'i.i.'
'.Aii'
'AiiA'
However, my arr includes and ' '
'Ai.A↵'
'i.i.↵'
'.Aii↵'
'AiiA↵'
' '
Can anyone show me how to remove and ' '
This is my code. Thank you for your help!!!
fh = fopen('map1.txt')
line = fgets(fh)
vec = [line]
while ischar(line)
line = fgets(fh);
vec(end+1,:) = line;
end

채택된 답변

per isakson
per isakson 2019년 6월 15일
편집: per isakson 2019년 6월 15일
Replace
fgets
by
fgetl
fgetl, Read line from file, removing newline characters
In response to comment
To remove the ending "blank" row, replace
while ischar(line)
by
while not(feof(fh))
while not(feof(fh)) avoids reading one or more trailing empty lines, i.e. lines containing only newline characters.
To remove trailing rows that contains pure white-space add these lines to the end of the script
while isempty(strtrim(vec(end,:)))
vec(end,:)=[];
end
  댓글 수: 6
per isakson
per isakson 2019년 6월 15일
편집: per isakson 2019년 6월 15일
Surprice! The last row are not spaces, it's nulls
>> double(vec)
ans =
65 105 46 65
105 46 105 46
46 65 105 105
65 105 105 65
0 0 0 0
The last row is caused by one trailing empty line in combination with while ischar(line)
See the addendum to my answer.

댓글을 달려면 로그인하십시오.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 File Operations에 대해 자세히 알아보기

Community Treasure Hunt

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

Start Hunting!

Translated by