how to specify the particular column numbers of a matrix in for loop

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AS
AS 2020-8-10
评论： AS 2020-8-10
I have a matrix withy dimension 1801 by 88. I want to select the column number 70:75 in for loop for analysis. If I start with
for i=1:1801
for j=1:5
It is only taking the first five columns. But I want get five columns having column number 70:75.
How can I do this.

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KSSV
KSSV 2020-8-10
for i = 1:1801
for j = 70:75
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KSSV
KSSV 2020-8-10
clc; clear all ;
load ampli_512.dat;
load freq_512.dat;
load phase_512.dat;
pos = 70:75 ;
Am = zeros(1801,6) ;
Ph = zeros(1801,6) ;
Fq = zeros(1801,6) ;
for i=1:1801
for j=1:6
Am(i,j)=ampli_512(i,pos(j));
Ph(i,j)=phase_512(i,pos(j));
Fq(i,j)=freq_512(i,pos(j));
end
end

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