how to multiply each row in a column by different numbers
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say, a file consists of a single column with 10000 rows
load file.txt
a = file;
k=1:10000;
s = a(k,1).*cosd(3.6*k);
k=0:10000;
plot(k,s)
xlabel('k');
it does work at all, could anyone help?
2 个评论
Image Analyst
2012-10-5
Do you know how to use the debugger to step though your code? This would be easily solved if you did that.
Passband Modulation
2012-10-5
采纳的回答
John
2012-10-5
1 个投票
Try this if a is a column vector:
load file.txt
a = file;
k = [1:size(a,1)]';
s = a.*(cosd(3.6*k));
plot(k,s)
xlabel('k');
Alternatively, k can be any column vector you wish to perform element-by-element multiplication with a. Just make sure a and k are of the same size.
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2012-10-5
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