how to count the number of a specific value in a cell array and how to access the index of each value
32 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Dongyan Zhu
am 18 Nov. 2020
Bearbeitet: Superficial
am 18 Nov. 2020
Dear all,
i am now working with a cell array with fixed length:
VtStatus = {1,0,0,0,0,0};
and I also created 6 checkboxes to manage this cell array, e.g.: If I want to mark the checkboxes instead of the 3rd and the 5th, then this array goes like this:
VtStatus = {1,1,0,1,0,1};
Here comes the question: I want to know how many ''1'' are in this array and also the position of these ''1'' (e.g: I want to get the index of ''active checkboxes'' as a string '1-2-4-6' ). Which functions should I use?
Many thx!
0 Kommentare
Akzeptierte Antwort
Ameer Hamza
am 18 Nov. 2020
Bearbeitet: Ameer Hamza
am 18 Nov. 2020
If possible, use numeric array for this type of data. They will be much more efficient and easy to deal with. For cell array, you can try something like this
VtStatus = {1,1,0,1,0,1};
loccation = find([VtStatus{:}]);
num = numel(loccation);
active_checkboxes = strjoin(string(loccation), '-');
Result
>> loccation
loccation =
1 2 4 6
>> num
num =
4
>> active_checkboxes
active_checkboxes =
"1-2-4-6"
0 Kommentare
Weitere Antworten (2)
João Mendes
am 18 Nov. 2020
To know the positions of the active checkboxes you can write:
active= find([a{:}]==1)
To know how many are active, i.e., how many '1's' exist, youc an write:
number=size(active,2)
It helps?
0 Kommentare
Superficial
am 18 Nov. 2020
Bearbeitet: Superficial
am 18 Nov. 2020
Convert from a cell to a vector and it's easy.
VtStatus = {1,1,0,1,0,1};
vec=[VtStatus{:}] % Convert to a vector
inds=find(vec==1) % The index of each cell equal to one
str=num2str(inds) % You can convert inds to a string if you like
count = length(inds) % The number of cells equal to one
Gives the answers:
vec =
1 1 0 1 0 1
inds =
1 2 4 6
str =
'1 2 4 6'
count =
4
0 Kommentare
Siehe auch
Kategorien
Mehr zu Data 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!