biplot(stats)
biplot()所属R语言包：stats
Biplot of Multivariate Data
双标图的多元数据
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Plot a biplot on the current graphics device.
绘制当前图形设备上的双标图。
用法----------Usage----------
biplot(x, ...)
## Default S3 method:[默认方法]
biplot(x, y, var.axes = TRUE, col, cex = rep(par("cex"), 2),
xlabs = NULL, ylabs = NULL, expand = 1,
xlim = NULL, ylim = NULL, arrow.len = 0.1,
main = NULL, sub = NULL, xlab = NULL, ylab = NULL, ...)
参数----------Arguments----------
参数：x
The biplot, a fitted object. For biplot.default, the first set of points (a two-column matrix), usually associated with observations.
biplot，合身的对象。 biplot.default，第一组点（一个两列的矩阵），通常与观测相关。
参数：y
The second set of points (a two-column matrix), usually associated with variables.
第二点集（一个两列的矩阵），通常与变量关联。
参数：var.axes
If TRUE the second set of points have arrows representing them as (unscaled) axes.
如果TRUE第二套点箭头代表（未缩放）轴。
参数：col
A vector of length 2 giving the colours for the first and second set of points respectively (and the corresponding axes). If a single colour is specified it will be used for both sets. If missing the default colour is looked for in the palette: if there it and the next colour as used, otherwise the first two colours of the palette are used.
给一个长度为2的向量分别点（和相应的轴）为第一和第二组的颜色。如果指定一个单一的颜色，它会被用于两组。如果缺少默认的颜色，看着palette：如果有它作为未来的颜色，否则前两个颜色的调色板使用。
参数：cex
The character expansion factor used for labelling the points. The labels can be of different sizes for the two sets by supplying a vector of length two.
用于标记点的字符膨胀系数。通过提供一个长度为2的向量，可以是两套不同尺寸的标签。
参数：xlabs
A vector of character strings to label the first set of points: the default is to use the row dimname of x, or 1:n if the dimname is NULL.
一个字符串矢量标记点的第一组：默认的是使用的x的行dimname，或1:n，如果dimnameNULL。
参数：ylabs
A vector of character strings to label the second set of points: the default is to use the row dimname of y, or 1:n if the dimname is NULL.
一个字符串矢量标记点的第二套：默认的是使用的y的行dimname，或1:n，如果dimnameNULL。
参数：expand
An expansion factor to apply when plotting the second set of points relative to the first. This can be used to tweak the scaling of the two sets to a physically comparable scale.
申请时绘制相对于第一点，第二组的扩充因素。这可以用来调整两套缩放，身体可比的规模。
参数：arrow.len
The length of the arrow heads on the axes plotted in var.axes is true. The arrow head can be suppressed by arrow.len = 0.
绘制轴的箭头头的长度var.axes是真实的。箭头头，可以抑制由arrow.len = 0。
参数：xlim, ylim
Limits for the x and y axes in the units of the first set of variables.
在第一组变量的单位的X和Y轴的限制。
参数：main, sub, xlab, ylab, ...
graphical parameters.
图形参数。
Details
详情----------Details----------
A biplot is plot which aims to represent both the observations and variables of a matrix of multivariate data on the same plot. There are many variations on biplots (see the references) and perhaps the most widely used one is implemented by biplot.princomp. The function biplot.default merely provides the underlying code to plot two sets of variables on the same figure.
一个双标图是图，旨在代表的意见和多元数据同积矩阵的变量。有对biplots许多变化（见参考），也许是使用最广泛的biplot.princomp实施。函数biplot.default只是提供了底层代码绘制两组变量的数字相同。
Graphical parameters can also be given to biplot: the size of xlabs and ylabs is controlled by cex.
图形参数，也可以给biplot：xlabs和ylabscex控制规模。
副作用----------Side Effects----------
a plot is produced on the current graphics device.
当前图形设备上产生的图。
参考文献----------References----------
application to principal component analysis. Biometrika 58, 453–467.
参见----------See Also----------
biplot.princomp, also for examples.
biplot.princomp例子。
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。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
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发表于 2012-2-17 09:46:48
