Add number to every value in the vectors within a cell array (without loop)

Question

Robin Hartley 2022-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/1647305-add-number-to-every-value-in-the-vectors-within-a-cell-array-without-loop

评论： Robin Hartley 2022-2-10

采纳的回答： DGM

在 MATLAB Online 中打开

Hello all,

This is probably a simple question.

I would like to be able to add a constant to every value in the vectors within a cell array without using a loop.

Here is my current code. Which works, but doesnt seem very elegant:

T1 = 1:1:10;
T2 = 11:1:20;
T3 = 21:1:30;
Temp = [{T1};{T2};{T3}];
for i = 1:20
    Temp(i) = {bsxfun(@plus, TempC{i, 1}, 273.15)};
end

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Answer 1

DGM 2022-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/1647305-add-number-to-every-value-in-the-vectors-within-a-cell-array-without-loop#answer_893355

编辑：DGM 2022-2-10

在 MATLAB Online 中打开

You can use cellfun() to apply an operation to the contents of a cell array. Elementwise arithmetic operations between a scalar and an array don't need bsxfun() to do the expansion, even in versions prior to R2016b.

T1 = 1:1:10;
T2 = 11:1:20;
T3 = 21:1:30;
Temp = [{T1};{T2};{T3}];
Temp = cellfun(@(x) x+273.15,Temp,'uniform',false);
celldisp(Temp)
 
Temp{1} =
 
  274.1500  275.1500  276.1500  277.1500  278.1500  279.1500  280.1500  281.1500  282.1500  283.1500

Temp{2} =
 
  284.1500  285.1500  286.1500  287.1500  288.1500  289.1500  290.1500  291.1500  292.1500  293.1500

Temp{3} =
 
  294.1500  295.1500  296.1500  297.1500  298.1500  299.1500  300.1500  301.1500  302.1500  303.1500