ratioTransform(RTCA)
ratioTransform()所属R语言包:RTCA
RATIO TRANSFORMATION OF RTCA DATA
作者RTCA数据的比值变换
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Performs ratio transformation (normalisation) of RTCA data, as recommended by the producer Roche.
执行RTCA数据的转化率(标准化),由生产商罗氏公司的建议。
用法----------Usage----------
ratioTransform(object, time)
参数----------Arguments----------
参数:object
An object of RTCA
一个RTCA的对象
参数:time
numeric, the time point used to normalize the whole series of data
数字,用于标准化的全系列数据的时间点
Details
详情----------Details----------
The xCelligence software provided by Roche performs ratio transform implicitly by dividing the time-series impedance measurement by the value of a selected time point (so-called 'base-time'), for instance 5 hours after compound transfection, in each cell. The aim of this transformation was to scale (normalize) the data of different wells, since the normalized values of all wells are uniformly 1 at the base-time.
由罗氏公司提供的软件xCelligence执行的比例转换选定的时间点值(所谓的碱基)除以阻抗测量的时间序列隐,为5个小时后,复合转染的实例,在每一个单元。本次改造的目的是规模(标准化)不同井的数据,因为所有油井的标准化值在碱基的时间是一致1。
However, this method is vulnerable to arbitrary selection of the time point chosen to normalize. It may be helpful to try several base-time values before comparing normalized results.
然而,这种方法很容易任意选择的时间点选择标准化。它可能是有益的尝试几个基本的时间值前比较规范化的结果。
See derivativeTransform and rgrTransform for other normalization (scaling) possibilities.
derivativeTransform和rgrTransform其他标准化(缩放)的可能性。
值----------Value----------
An object of RTCA, populated with normalized value. The normalized values of all wells are uniformly 1 at the base-time.
RTCA对象,归一化值填充。所有油井的标准化值是一致碱基时。
作者(S)----------Author(s)----------
Jitao David Zhang <a href="mailto:jitao_david.zhang@roche.com">jitao_david.zhang@roche.com</a>
参见----------See Also----------
smoothTransform and interpolationTransform for smoothing and interpolating the RTCA data. rgrTransform calculates relative growth rate, derivativeTransform calculates derivatitve. The later two methods are not sensative to the selection of base-time point.
smoothTransform和interpolationTransform平滑和插值RTCA数据。 rgrTransform计算相对生长速率,derivativeTransform计算derivatitve的。后两种方法不敏感易变质而欲碱基的时间点的选择。
举例----------Examples----------
require(RTCA)
ofile <- system.file("/extdata/testOutput.csv", package="RTCA")
x <- parseRTCA(ofile)
xNorm <- ratioTransform(x, 35)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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