meanSdPlot(vsn)
meanSdPlot()所属R语言包:vsn
Plot row standard deviations versus row means
积行与行方式的标准偏差
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Methods for objects of classes matrix, ExpressionSet, vsn and MAList
为对象的类的方法matrix,ExpressionSet,vsn和MAList
用法----------Usage----------
meanSdPlot(x,
ranks = TRUE,
xlab = ifelse(ranks, "rank(mean)", "mean"),
ylab = "sd",
pch = ".",
plot = TRUE,
参数----------Arguments----------
参数:x
An object of class matrix, ExpressionSet, vsn or MAList.
一个类的对象matrix,ExpressionSet,vsn或MAList。
参数:ranks
Logical, indicating whether the x-axis (means) should be plotted on the original scale (FALSE) or on the rank scale (TRUE). The latter distributes the data more evenly along the x-axis and allows a better visual assessment of the standard deviation as a function of the mean.
逻辑,指示是否应在原有规模(FALSE)或绘制上的排名规模的X轴(手段)(TRUE)。后者更均匀地分布数据沿x轴和允许更好的视觉评价函数均值的标准偏差。
参数:xlab
Character, label for the x-axis.
字符,x轴的标签。
参数:ylab
Character, label for the y-axis.
字符,标签为y轴。
参数:pch
Plot symbol.
图的象征。
参数:plot
Logical. If TRUE (default), a plot is produced. Calling the function with plot=FALSE can be useful if only its return value is of interest.
逻辑。如果TRUE(默认),产生的图。 plot=FALSE调用函数可能是有用的,它的返回值,如果只利益。
参数:...
Further arguments that get passed to plot.default.
得到传递到plot.default的进一步论据。
Details
详情----------Details----------
Standard deviation and mean are calculated row-wise from the expression matrix (in) x. The scatterplot of these versus each other allows to visually verify whether there is a dependence of the standard deviation (or variance) on the mean. The red dots depict the running median estimator (window-width 10%). If there is no variance-mean dependence, then the line formed by the red dots should be approximately horizontal.
计算标准偏差和平均行明智的表达矩阵()x的。这些对彼此的散点图可以直观地确认是否有一个标准偏差的平均值(或方差)的依赖。红点描绘的运行中位数估计(窗宽10%)。如果没有平均方差依赖,然后由红点组成的线应该是近似水平。
值----------Value----------
A named list with four components: its elements px and py are the x- and y-coordinates of the individual data points in the plot; its first and second element are the x-coordinates and values of the running median estimator (the red dots in the plot). Depending on the value of plot, the method can also have a side effect, which is to create a plot on the active graphics device.
其元素与四个组成部分的命名列表:px和py是在X和Y坐标的单个数据点中的图;其第一和第二个元素的x坐标和价值运行中位数估计(在图中的红点)。 plot价值,该方法也有一个副作用,这是积极的图形设备上创建一个图。
作者(S)----------Author(s)----------
Wolfgang Huber
参见----------See Also----------
vsn
vsn
举例----------Examples----------
data(kidney)
log.na = function(x) log(ifelse(x>0, x, NA))
exprs(kidney) = log.na(exprs(kidney))
meanSdPlot(kidney)
## ...try this out with non-logged data, the lymphoma data, your data...[#...尝试了这一点与非记录的数据,淋巴瘤的数据,数据...]
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注:
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