converting a string of variables to numbers
조회 수: 1 (최근 30일)
이전 댓글 표시
HI all I have the varible
Country
Austria
Austria
Austria
Austria
Austria
Austria
Austria
and I want to convert it to a numeric varable. Any help?
Thanks in advance
댓글 수: 5
Oleg Komarov
2012년 5월 21일
Now that I read your duplicated question: http://www.mathworks.com/matlabcentral/answers/38910-grouping-observations-with-specific-characteristics
I understand that you do NOT want to gather but sort.
Geoff already answered your question, you have to use sortrows.
채택된 답변
Walter Roberson
2012년 5월 21일
Use the multi-output form of unique() to convert string variables to numeric indices.
When you have the numeric indices, use accumarray() to sum the data into a 3D table (date, country, I-value).
Either compute further things with that table or output it, skipping the 0 entries (the ones for which there was no input data)
댓글 수: 5
Walter Roberson
2012년 5월 22일
Note: this solution is for adding together all of the values associated with a particular triple of attributes. If you only have one value for any given combination, then this approach is not appropriate, but sortrows() would be appropriate.
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Numeric Types에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!