cell array conversion to numeric array
조회 수: 5 (최근 30일)
이전 댓글 표시
hi, i have a cell array that contains numbers and im trying to convert it to numeric array by using the 'cell2mat' command. but i keep getting error:
**** Error using cat Dimensions of matrices being concatenated are not consistent.
Error in cell2mat (line 84) m{n} = cat(1,c{:,n}); ********
what does it mean? why is it happening? and how can i fix it?
thank you
댓글 수: 0
채택된 답변
Azzi Abdelmalek
2013년 12월 17일
If you have
v={[1 2 3] , [ 2 5] , 4}
w=cell2mat(v) % horizontal concatenation is possible
v={[1 2], [3 ; 5]}
cell2mat(v) % is not possible because you can't concatenate the two vectors
댓글 수: 0
추가 답변 (1개)
Jacob Halbrooks
2013년 12월 17일
My guess is that your cell array is 2D but contains empty values so that when CELL2MAT attempts to take each cell row and create a numeric row, the empty "disappears" and the rows end up having different number of elements. The attempt to concatenate them into a 2D array then fails. Here is a simple example:
>> c = {1 2 []; 3 4 5};
>> cell2mat(c)
Error using cat
Dimensions of matrices being concatenated are not consistent.
If this is indeed the case, you could consider using code like this below to identify the empties in your cell array and replace them with a value (here, NaN):
>> emptymask = cellfun(@(x)isempty(x), c);
>> c{emptymask} = NaN;
>> cell2mat(c)
ans =
1 2 NaN
3 4 5
참고 항목
카테고리
Help Center 및 File Exchange에서 Data Type Conversion에 대해 자세히 알아보기
제품
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!