unique set from file

1 次查看（过去 30 天）
Sanjana Sankar
Sanjana Sankar 2019-7-29
评论： Sanjana Sankar 2019-7-29
I have a .mat file with 14994x31 cells with random alphabets in the cells. I need to find the unique set. I know it is going to be the set of all alphabets only. But I want to find exactly which alphabets are present (if not all). Is the anyway to find out the unique set for the entire file and not just row by row?
  2 个评论
Adam Danz
Adam Danz 2019-7-29
Could you give us an example of the cell array?
Sanjana Sankar
Sanjana Sankar 2019-7-29
'!' 'a:' 'l' 't' '@' [] []
'?' 'a:' 'l' 't' '@' 's' 't'
'/' 'a' 'b' 'a' 'n' 'd' 'A~'
3 different rows

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Adam Danz
Adam Danz 2019-7-29
编辑：Adam Danz 2019-7-29
c = {'!' 'a:' 'l' 't' '@' [] []
'?' 'a:' 'l' 't' '@' 's' 't'
'/' 'a' 'b' 'a' 'n' 'd' 'A~'};
cUnq = unique(c(cellfun(@ischar,c)));
Result
cUnq =
13×1 cell array
{'!' }
{'/' }
{'?' }
{'@' }
{'A~'}
{'a' }
{'a:'}
{'b' }
{'d' }
{'l' }
{'n' }
{'s' }
{'t' }
If you want to keep the unique elements in their original order,
cUnq = unique(c(cellfun(@ischar,c)),'stable');

更多回答（1 个）

Joel Handy
Joel Handy 2019-7-29
编辑：Joel Handy 2019-7-29
c = {'!' 'a:' 'l' 't' '@' [] []
'?' 'a:' 'l' 't' '@' 's' 't'
'/' 'a' 'b' 'a' 'n' 'd' 'A~'};
for rowIdx = 1:size(c,1)
cString(rowIdx) = string([c{rowIdx,:}])
end
uniqueSets = unique(cString)

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by