how can i truncte a matrix?
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how can i truncate matrix with 51*500 to 51*71?
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Dave B
le 14 Nov 2021
Modifié(e) : Dave B
le 14 Nov 2021
Are you asking how to take a 51 x 500 matrix and remove all but the first 71 columns?
x = rand(51,500);
x = x(:,1:71); % read this as x("all rows", "columns 1 to 71")
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Dave B
le 14 Nov 2021
the code above runs just fine:
x = rand(51,500);
x = x(:,1:71);
size(x)
The error indicates that the matrix has just one column:
a = rand(51,1); % this only has one column, how can I take the first 71 columns?
a(:,1:71)
Tina
le 14 Nov 2021
if you have 51*500 try doing
a=zeros(51,500)
b=a(:,1:71)
and if you have 500*51
a=zeros(500,51)
b=a(1:71,:)
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