On 05/11/2012 03:03 AM, Daniel J Sebald wrote:
For
example, this instruction that Ben suggested as a test:
a = s(1:100:k2,1:100);
is one susceptible to aliasing because it is decimating without
lowpass filtering. An example of a lowpass filter would be to
simple take the average of the block of 100 samples rather than
using every 100th sample. There might be other things like
imresize that you could use.
Dan
Decimating may be useful
in some cases, but definitely not if
you are looking for rare events in a long sequence. An
alternative
is to generate several plots of sequential sub sequences.
mdg
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