am.trans(LPE)
am.trans()所属R语言包:LPE
Transform replicated arrays into (A,M) format
(A,M模式)格式转换成复制数组
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Transforms expression intensity measurements for replicated arrays of a single experimental condition into (A,M) format: A = (xi+xj)/2, M = (xi-xj) where x1, x2,..., xn are individual chips. This function is used in the estimation of within-bin variances in the LPE function, and not typically by the user.
(A,M模式)格式转换成一个单一的实验条件下复制阵列表达强度测量为:A =(十一+ XJ)/ 2,男=(XI-XJ),其中x1,x2,...,xn为单个芯片。此功能用于内槽方差估计在液相外延功能,通常不是由用户。
用法----------Usage----------
am.trans(y)
参数----------Arguments----------
参数:y
y is an ngene by n matrix of expression intensity measurements for replicated arrays under a single experimental condition.
y是一个由n为一个单一的实验条件下复制的阵列表达强度测量矩阵ngene。
值----------Value----------
Returns matrix with 2 columns cbind(A.M) and rows comprising all permutations of individual chip columns of the input matrix y. Note that for each pair of chips M is calculated twice, once for xi-xj and once for xj-xi. The resulting matrix thus has twice the number of rows as the input matrix y.
返回矩阵2列cbind(AM)和由单个芯片的输入矩阵Y列的所有排列的行。请注意,对每个芯片M是计算两次一次XI-XJ一次XJ-XI。由此产生的矩阵输入矩阵Y的行数的两倍。
作者(S)----------Author(s)----------
Nitin Jain<a href="mailto:nitin.jain@pfizer.com">nitin.jain@pfizer.com</a>
参考文献----------References----------
differentially expressed genes with a small number of replicated microarrays, Bioinformatics, 1945-1951.
参见----------See Also----------
lpe
lpe
举例----------Examples----------
library(LPE)
# Loading the LPE library[载入液相库的]
# Test data with duplicates[重复试验数据]
temp1 <- matrix(c(1,20,1.5,23),nrow=2)
am.trans(temp1)
# It gives a matrix of (4*2) as only two permutaions[它提供了矩阵(4 * 2),因为只有两个permutaions]
# are possible for each row with duplicates (X1-X2, and X2-X1)[每个重复行(X1 - X2,X2-X1的可能)]
# Another test data with three replicates[三另一个测试数据复制]
temp2 <- matrix(c(1,20,1.5,23,0.8,19),nrow=2)
am.trans(temp2)
# Now it returns matrix of (12*2) as there are[现在它返回矩阵(12 * 2)有]
# 6 possible permutations for each row with triplicates[6个可能的排列为每行一式三份]
# (X1-X2, X1-X3, X2-X3, X2-X1, X3-X1 and X3-X2)[(X1 - X2,X1 - X3,X2 - X3,X2 - X1,X3-X1的X3 - X2)]
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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