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From: Diem on 23 Jun 2010 13:54
I have a problem with datas from a signal. I would like to remove all the noise from the beginning of the recording. To do so, I thought of specifying the datas in my array I wished to be zeroed. However, MatLab doesn't seem to account for the procedure.

This is what the code looks like as of now:
s(1:10000)=0;

s being the amplitude datas of the signal which counts 45 000 values. I want the first 10 000 values to be zeroed.
From: Steven Lord on 23 Jun 2010 15:18

"Diem " <didi.bui(a)gmail.com> wrote in message
news:hvthnt$q4$1(a)fred.mathworks.com...
>I have a problem with datas from a signal. I would like to remove all the
>noise from the beginning of the recording. To do so, I thought of
>specifying the datas in my array I wished to be zeroed. However, MatLab
>doesn't seem to account for the procedure.
>
> This is what the code looks like as of now:
> s(1:10000)=0;
>
> s being the amplitude datas of the signal which counts 45 000 values. I
> want the first 10 000 values to be zeroed.

Given that s is your data, if I interpret your request:

"I want the first 10 000 values to be zeroed."

to mean "I want to store 0 in the first 10000 elements of s" then the code
to accomplish that request is exactly the code you posted:

"s(1:10000)=0;"

But I interpret your comment:

"MatLab doesn't seem to account for the procedure."

to indicate that you are unsatisfied with the results. What about the
results is unsatisfactory? Do you expect a different result? Does it warn
or error?

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
To contact Technical Support use the Contact Us link on
http://www.mathworks.com


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