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  • License: Freeware
  • Last update: 6 years ago
  • Total downloads: 143
  • Price: Free |
  • Operating system: Linux, Mac OS X, Win All, Solaris
  • Publisher: Arash Salarian (2 other programs)
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scripts default iconRank-Order Filter (Scripts) Publisher's description

y = RankOrderFilter(x, window, thd) runs a rank-order filtering of order N on x. y is the same size as x

y = RankOrderFilter(x, window, thd) runs a rank-order filtering of order N on x. y is the same size as x. If x is a matrix, RankOrderFilter operates along the columns of x.

Rank-order filter calculates the p'th percentile of the data on an N sized window round each point of x. p can be a number between 0 and 100. To avoid edge effects, the x is expanded by repeating the first and the last samples N/2 times.

When p is equal to 50, the output of this function will be the same as MATLAB's MEDFILT1(x,N); however, RankOrderFilter is almost always much faster and needs less memory.

When p is close to 0 (or to 100), a RankOrderFilter calculates an approximate lower (or upper) envlope of the signal.

System Requirements:

MATLAB 7.6 (R2008a)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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