Question: Please Explain Window Size and Step Size
0
gravatar for crcarroll
29 days ago by
crcarroll10
crcarroll10 wrote:

Hi,

In regards to a sliding window analysis, can someone explain and differentiate the concepts of "window size" and "step size"?

Thank you

sequencing mapping alignment • 126 views
ADD COMMENTlink modified 29 days ago by RamRS25k • written 29 days ago by crcarroll10
2
gravatar for RamRS
29 days ago by
RamRS25k
Houston, TX
RamRS25k wrote:

A sliding window analysis has two components: sliding and window. "Window size" is the size of the window, which is the length of the sequence you're looking at each time in the analysis. "Step size" is the size of the "sliding" action, which is the length of sequence you move between each window.

For example, in the sequence "MARY HAD A LITTLE LAMB", if window size = 3 and step size = 5,

MARY HAD A LITTLE LAMB

MAR___________________ #window-1

12345HAD______________ #window-2

1234512345 LI_________ #window-3

123451234512345LE ____ #window-4

12345123451234512345MB #window-5
ADD COMMENTlink written 29 days ago by RamRS25k

Very clear explanation. Thank you very much for taking the time!

ADD REPLYlink written 28 days ago by crcarroll10
0
gravatar for Pierre Lindenbaum
29 days ago by
France/Nantes/Institut du Thorax - INSERM UMR1087
Pierre Lindenbaum126k wrote:
position=0;
while(position< chromosome_length) {
      do_something_between(position,position+window_size);
      position = position + step_size;
     }
ADD COMMENTlink written 29 days ago by Pierre Lindenbaum126k
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