times function for argument of type cell?

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Chiara Scarpellini 2021-8-31

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https://ww2.mathworks.cn/matlabcentral/answers/1444054-times-function-for-argument-of-type-cell

编辑： Walter Roberson 2021-9-1

I have an argument of type cell (2785 x 20) and I need to multyply every cell per 100 and divide it per 785. Thus I need a function like times for vectors

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Answer 1

Star Strider 2021-8-31

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https://ww2.mathworks.cn/matlabcentral/answers/1444054-times-function-for-argument-of-type-cell#answer_777994

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It is necessary to include the cell array as an argument to cellfun:

C = num2cell(randi(9,4, 5))
C = 4×5 cell array
    {[2]}    {[2]}    {[7]}    {[7]}    {[2]}
    {[9]}    {[8]}    {[1]}    {[5]}    {[4]}
    {[1]}    {[4]}    {[4]}    {[9]}    {[7]}
    {[3]}    {[5]}    {[8]}    {[7]}    {[4]}
percentages = cellfun(@(x)times(x,100/787), C)
percentages = 4×5
    0.2541    0.2541    0.8895    0.8895    0.2541
    1.1436    1.0165    0.1271    0.6353    0.5083
    0.1271    0.5083    0.5083    1.1436    0.8895
    0.3812    0.6353    1.0165    0.8895    0.5083

.

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Chiara Scarpellini 2021-9-1

Operator '*' is not supported for operands of type 'cell'

Walter Roberson 2021-9-1

编辑：Walter Roberson 2021-9-1

在 MATLAB Online 中打开

What is the output of

unique(cellfun(@class, matrix_substances, 'uniform', 0))

The message you are getting suggests that there is at least one location inside matrix_substances where the entry is a cell array instead of being a single number or [] .

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