specDist.cosine(xcms)
specDist.cosine()所属R语言包:xcms
a Distance function based on matching peaks
基于匹配峰的距离函数
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This method calculates the distance of two sets of peaks using the cosine-distance.
这种方法计算的两套使用余弦距离峰的距离。
用法----------Usage----------
specDist.cosine(peakTable1, peakTable2, mzabs=0.001, mzppm=10, mzExp=0.6, intExp=3, nPdiff=2, nPmin=8, symmetric=FALSE)
参数----------Arguments----------
参数:peakTable1
a Matrix containing at least m/z-values, row must be called "mz"
矩阵至少含有M / z值,行必须被称为“MZ”
参数:peakTable2
the matrix for the other mz-values
MZ-值矩阵
参数:mzabs
maximum absolute deviation for two matching peaks
两个匹配峰的最大绝对偏差
参数:mzppm
relative deviations in ppm for two matching peaks
在PPM的两个匹配峰的相对偏差
参数:symmetric
use symmetric pairwise m/z-matches only, or each match
使用对称成对M / Z-匹配,或每场比赛
参数:mzExp
the exponent used for mz
为MZ指数
参数:intExp
the exponent used for intensity
使用的强度指数
参数:nPdiff
the maximum nrow-difference of the two peaktables
最大NROW差异的两个peaktables
参数:nPmin
the minimum absolute sum of peaks from both praktables
来自praktables峰的最小绝对值总和
Details
详情----------Details----------
The result is the cosine-distance of the product from weighted factors of mz and intensity from matching peaks in the two peaktables. The factors are calculated as wFact = mz^mzExp * int^intExp. if no distance is calculated (for example because no matching peaks were found) the return-value is NA.
结果是余弦距离从匹配的产品在两个peaktables峰MZ和强度的加权因素。因素计算wFact = MZ ^ mzExp * INT ^ intExp。如果没有距离的计算(例如,因为没有匹配的峰)的返回值是NA。
方法----------Methods----------
specDist.cosine(peakTable1, peakTable2, mzabs = 0.001, mzppm = 10, mzExp = 0.6, intExp = 3, nPdiff = 2, nPmin = 8, symmetric = FALSE)
specDist.cosine(peakTable1, peakTable2, mzabs = 0.001, mzppm = 10, mzExp = 0.6, intExp = 3, nPdiff = 2, nPmin = 8, symmetric = FALSE)
作者(S)----------Author(s)----------
Joachim Kutzera, <a href="mailto:jkutzer@ipb-halle.de">jkutzer@ipb-halle.de</a>
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
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