Operator '>=' is not supported for operands of type 'cell'

Question

Riccardo Tronconi 2021-6-29

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https://ww2.mathworks.cn/matlabcentral/answers/867848-operator-is-not-supported-for-operands-of-type-cell

评论： Walter Roberson 2023-6-12

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Hi guys I have a problem in comparing two cells.

My input cells are T{n}, where n=3

T{1} [mx4]
T{2} [nx4]
T {3} [k x 4]

and thor cell [sx1] (Data tipe is a datetime)

To simplify I m looking for all index of T{2} that verify the following in which I am comparing datetimes:

find((T{2}(1:end,1))>= thor(1,1) & (T{2}(1:end,1))< thor(2,1));

The problem is the operator but I guess is "1:end" because the following code worked properly..

find(T{2}{2,1}>= thor{2,1} & T{2}{2,1}< thor{3,1});

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Riccardo Tronconi 2021-6-30

For both of them?

Stephen23 2021-6-30

在 MATLAB Online 中打开

S1 = load('thor.mat') % okay
S1 = struct with fields:
    thor: {537×1 cell}
S2 = load('T.mat') % corrupt
Error using load
Unable to read MAT-file /users/mss.system.YD2TnT/T.mat. File might be corrupt.

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Answer 1

Steven Lord 2021-6-29

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https://ww2.mathworks.cn/matlabcentral/answers/867848-operator-is-not-supported-for-operands-of-type-cell#answer_735858

在 MATLAB Online 中打开

T = {[], datetime('tomorrow')}
T = 1×2 cell array
    {0×0 double}    {[30-Jun-2021]}
thor = {datetime('today')}
thor = 1×1 cell array
    {[29-Jun-2021]}
T{2} <= thor{1} % false
ans = logical
   0
T{2} <= thor(1) % error
Comparison is not defined between datetime and cell arrays.

The next-to-last line indexes into thor using curly braces to extract the contents of the first cell, the last line indexes into thor using parentheses to extract the first cell.

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Riccardo Tronconi 2021-6-29

It does not work either. My T{2} in not a value but an array mx4

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Answer 2

Montserrat 2023-6-11

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https://ww2.mathworks.cn/matlabcentral/answers/867848-operator-is-not-supported-for-operands-of-type-cell#answer_1253969

在 MATLAB Online 中打开

edad = x.age;
Unable to resolve the name 'x.age'.
H = x.sex == "female";
M = x.sex == "male";
idx = x.localization;
% Filtrar los datos por sexo y calcular los conteos de edades
femaleCounts = countcats(categorical(edad(H & idx)));
maleCounts = countcats(categorical(edad(M & idx)));
% Obtener las categorías de edad y ordenarlas de forma ascendente
ageCategories = categories(categorical(edad));
ageCategories = sort(ageCategories);
% Crear el gráfico de barras apiladas
figure;
bar([femaleCounts maleCounts], 'stacked');
legend('Mujeres', 'Hombres');
xticks(1:length(ageCategories));
xticklabels(ageCategories);
xlabel('Edad');
ylabel('Cantidad');
title('Análisis de Edades en Hombres y Mujeres con Cáncer');
% Ajustar el tamaño de la figura
fig = gcf;
fig.Position(3:4) = [800 500];