How to delete empty cells in a cell array?

2 Ansichten (letzte 30 Tage)
Matthew Tyler Jeffries
Matthew Tyler Jeffries am 20 Feb. 2019
Beantwortet: Stephen23 am 22 Feb. 2019
I would like to delete all of the empty {0×0 double} cells in each row, then shift the cells that have values in them to the left.
Starting with:
{["laterite-00001"]} {[ 30552]} {[ 227634]} {[ 123220]}
{["laterite-00002"]} {0×0 double} {0×0 double} {[1345]}
{["laterite-00003"]} {0×0 double} {0×0 double} {[443266]}
{["laterite-00004"]} {0×0 double} {0×0 double} {[87887]}
{["laterite-00005"]} {[1323]} {[87455]} {[23345]}
{["laterite-00006"]} {[43233]} {[454547]} {0×0 double}
I would like to end with this:
{["laterite-00001"]} {[30552]} {[227634]} {[123220]}
{["laterite-00002"]} {[1345]}
{["laterite-00003"]} {[443266]}
{["laterite-00004"]} {[87887]}
{["laterite-00005"]} {[1323]} {[87455]} {[23345]}
{["laterite-00006"]} {[43233]} {[454547]}

Akzeptierte Antwort

Walter Roberson
Walter Roberson am 20 Feb. 2019
What you show us for input is a 6 x 4 cell array, some entries of which happen to contain empty arrays.
What you show us for desired output is something that does not exist in MATLAB: a rectangular cell array with "holes". Some people refer to this as a "ragged" array.
The closest you can get in MATLAB is that you could make a 6 x 1 cell array, each entry of which was a cell array:
{{"laterite-00001" 30552 227634 123220}
{"laterite-00002" 1345}
...
}
  1 Kommentar
Walter Roberson
Walter Roberson am 20 Feb. 2019
arrayfun(@(IDX) {YourCell{IDX,:}}, (1:size(YourCell,1)).', 'uniform', 0)

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (2)

Peter Perkins
Peter Perkins am 21 Feb. 2019
Another alternative, which may not be what you are looking for:
>> c = {11 12 13; 21 [] 23; 31 [] []}
c =
3×3 cell array
{[11]} {[ 12]} {[ 13]}
{[21]} {0×0 double} {[ 23]}
{[31]} {[ 32]} {0×0 double}
>> for i = 1:size(c,1)
j = ~cellfun('isempty',c(i,:));
numNotEmpty = sum(j);
cc = repmat({missing},1,size(c,2));
cc(1,1:numNotEmpty) = c(i,j);
c(i,:) = cc;
end
>> c
c =
3×3 cell array
{[11]} {[12]} {[ 13]}
{[21]} {[23]} {1×1 missing}
{[31]} {[32]} {1×1 missing}

Stephen23
Stephen23 am 22 Feb. 2019
Shifts the empty cell to the right, without any explicit loops:
c = {11,12,13;21,[],23;31,[],[]}
[~,idc] = sort(cellfun(@isempty,c),2)
s = size(c);
[idr,~] = ndgrid(1:s(1),1:s(2));
c = c(sub2ind(s,idr,idc))

Kategorien

Mehr zu Numeric Types finden Sie in Help Center und File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by