I have a 720x20 matrix how can i subtract 1x20 matrix from it?

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mohsen moslemin 2016-9-2

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评论： mohsen moslemin 2016-9-2

    clc
clear
signal_factor=10;
format long
folder='E:\Pressure split';
filetype='*.xlsx';  
f=fullfile(folder,filetype);
d=dir(f);
for k=1:numel(d);
  data{k}=xlsread(fullfile(folder,d(k).name));
end
data=cell2mat(data);
A=data(:,1);
A=A(80:end,1);
n = 720;
m = numel(A);
out = reshape([A(:);nan(mod(-m,n),1)],n,[]);
out=out*signal_factor;
min=min(out);

This is my code, it generates 720x20 matrix and the min also generates 1x20 matix what i want is to subtract first value of min from out (subtract a constant value from all the 720 values) and so on.

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PRUDHVI RAJU 2016-9-2

min=repmat(min,720,1); % 720 rows same 'min' row matrix

sub=out-min;

Azzi Abdelmalek 2016-9-2

Don't use the built-in function min as a variable

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采纳的回答

Adam 2016-9-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/301717-i-have-a-720x20-matrix-how-can-i-subtract-1x20-matrix-from-it#answer_233579

编辑：Adam 2016-9-2

在 MATLAB Online 中打开

res = bsxfun( @minus, out, minVal);

should work if I understand correctly what you are asking.

Don't ever call a variable 'min' though, especially not when you are also using the function 'min' which you hide after your variable gets created (but really just never do it, irrespective of whether you are using the 'min' function in your code or not).