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oscilloscope filter data algorithm
Posted: Sat Mar 14, 2015 4:11 pm
by borodadada
Hello guys. The question of the theory than on practice. If I have one million samples, and screen size
1000 pixels wide. How do I display all the data that would not be the maximum and minimum losses? The end result of 1,000 samples.
Re: oscilloscope filter data algorithm
Posted: Sat Mar 14, 2015 7:17 pm
by Perfect Human Interface
Not certain where this came from but here's a wave player module that includes a waveform display written in Ruby.
Re: oscilloscope filter data algorithm
Posted: Sat Mar 14, 2015 8:14 pm
by borodadada
Yes, this is it. Thank you. But I have a poor knowledge of Ruby, in code,
Code: Select all
0.upto(a.length-1) do |i|
step += 1
max = a[i] > max ? a[i] : max
min = a[i] < min ? a[i] : min
if step >= epp
maxA << [i*s,h-max*h]
minA << [i*s,h-min*h]
step = 0
max = -1
min = 1
end
end
Search max and min amplitude on interval (incloming 10 samples, search 2 (min and max))? Result one horizontal line? Ohh...
Is it possible to make this algorithm in real time?