How to import data with string, missing data,and numeric values?

조회 수: 21 (최근 30일)
Danupon Subanapong
Danupon Subanapong 2018년 11월 14일
댓글: madhan ravi 2018년 11월 14일
Hi!! I would like to ask for your help. I have to a number of import text data. Inside these text files, there are strings, numeric values, and missing data. I have been seeking for how to import these files. I tried importdata, but it only imports data from row no.1 to the missing data row. I will attach the example of input file as well. Please check it.

채택된 답변

madhan ravi
madhan ravi 2018년 11월 14일
편집: madhan ravi 2018년 11월 14일
fid=fopen('Example_of_input3.txt');
f=textscan(fid,'%s', 'delimiter','\n');
fclose(fid);
celldisp(f)
  댓글 수: 4
Danupon Subanapong
Danupon Subanapong 2018년 11월 14일
Thank you so much. Your answer is very helpful. I have one last question. I have been trying to convert the character array f{1}{4:end} to numeric array. I try to use for loop as shown below. But it takes very long time to process. Can you please suggest some alternative for faster solution?
A=zeros(12000,5);
for i=4:end
A(i,:)=str2num(string(f{1}{i})
end
madhan ravi
madhan ravi 2018년 11월 14일
Anytime :) , see my previous comment just use indexing loop is not needed , search indexing cell array in internet and read slowly you will understand

댓글을 달려면 로그인하십시오.

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Data Type Conversion에 대해 자세히 알아보기

제품


릴리스

R2018a

Community Treasure Hunt

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

Start Hunting!

Translated by