Read dada from a file
조회 수: 3 (최근 30일)
이전 댓글 표시
So, I have an input text file(.txt) looking something like this: X:0.34, y:0.45, z:0.32, t:0.002
How can I read each variable separately like a column for x, one for y... and store them into matlab?
댓글 수: 7
Adam Danz
2019년 7월 20일
편집: Adam Danz
2019년 7월 20일
We can work with that! In the image you shared earlier, each set of x:... Y:... Z:... Ts:... has it's own row. But in the text you shared above, it looks like there can be multiple X,Y,Z,Ts per line. In fact, there are no line breaks in the text you shared so all of that is on 1 line. These details are important to set straight before designing a solution.
채택된 답변
Adam Danz
2019년 7월 20일
Attached is the text file you described named xyz.txt.
% Read in the file
t = fileread('xyz.txt');
% Split text where '>' marks end of each row
ts = strsplit(t,'>');
% Extract X value
[Xc,~] = regexp(ts,'X:(.*),Y','tokens','match');
% Extract Y value
[Yc,~] = regexp(ts,'Y:(.*),Z','tokens','match');
% Extract Z value
[Zc,~] = regexp(ts,'Z:(.*),Ts','tokens','match');
% Extract Ts value
[Tsc,~] = regexp(ts,'Ts:(.*)$','tokens','match');
% Create table
T = table(str2double(cellfun(@(x)x{:},[Xc{:}],'UniformOutput',false))', ...
str2double(cellfun(@(x)x{:},[Yc{:}],'UniformOutput',false))', ...
str2double(cellfun(@(x)x{:},[Zc{:}],'UniformOutput',false))', ...
str2double(cellfun(@(x)x{:},[Tsc{:}],'UniformOutput',false))', ...
'VariableNames', {'X','Y','Z','Ts'});
Result
T =
5×4 table
X Y Z Ts
_______ ______ ______ _________
0.0511 3.1803 7.7935 0
-0.0519 3.2234 7.602 0.0050049
-0.2841 3.2641 7.5804 0.0099792
-0.6074 3.3622 7.7911 0.014954
-0.8085 3.458 8.1622 0.019928
댓글 수: 2
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Logical에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!