我想在xtable输出上使用candisc::cancor函数。但是无法弄清楚。

library(xtable)
library(candisc)
data(Rohwer, package="heplots")
X <- as.matrix(Rohwer[,6:10])  # the PA tests
Y <- as.matrix(Rohwer[,3:5])   # the aptitude/ability variables
(cc <- cancor(X, Y, set.names=c("PA", "Ability")))
Canonical correlation analysis of:
         5   PA  variables:  n, s, ns, na, ss
  with   3   Ability  variables:  SAT, PPVT, Raven

    CanR  CanRSQ   Eigen percent    cum                          scree
1 0.6703 0.44934 0.81599   77.30  77.30 ******************************
2 0.3837 0.14719 0.17260   16.35  93.65 ******
3 0.2506 0.06282 0.06704    6.35 100.00 **

Test of H0: The canonical correlations in the
current row and all that follow are zero

     CanR  WilksL      F df1   df2  p.value
1 0.67033 0.44011 3.8961  15 168.8 0.000006
2 0.38366 0.79923 1.8379   8 124.0 0.076076
3 0.25065 0.93718 1.4078   3  63.0 0.248814
xtable(cc)

Error in UseMethod("xtable") :
  no applicable method for 'xtable' applied to an object of class "cancor"

最佳答案

如果您查看methods(xtable),则没有用于cancor对象的方法,但是有希望使用的xtable.data.frame,因为cancor的输出看起来像data.frames

但是,cancor不返回这些值-请查看str(cc)。它们是用print方法计算的。查看candisc:::print.cancor

因此,创建一个快速提取函数以将cancor输出生成为data.frames

outfun <- function(X) {
              CanR = X$cancor
              CanRSQ = CanR^2
              Eigen = CanRSQ/(1 - CanRSQ)
              percent = 100 * Eigen/sum(Eigen)
              cum = cumsum(percent)
              list(tab1 = data.frame(CanR, CanRSQ, Eigen, percent, cum) ,
                   tab2 = as.data.frame(candisc:::Wilks.cancor(X)))
        }

运行助手功能
(out <- outfun(cc))

# or run it like
out <- outfun(cancor(X, Y, set.names=c("PA", "Ability")))

然后可以使用xtable.data.frame生成xtable输出
xtable:::xtable.data.frame(out[[1]])

# % latex table generated in R 3.1.1 by xtable 1.7-3 package
# % Wed Sep 17 18:32:07 2014
# \begin{table}[ht]
# \centering
# \begin{tabular}{rrrrrr}
#   \hline
#  & CanR & CanRSQ & Eigen & percent & cum \\
#   \hline
# 1 & 0.67 & 0.45 & 0.82 & 77.30 & 77.30 \\
#   2 & 0.38 & 0.15 & 0.17 & 16.35 & 93.65 \\
#   3 & 0.25 & 0.06 & 0.07 & 6.35 & 100.00 \\
#    \hline
# \end{tabular}
# \end{table}

xtable:::xtable.data.frame(out[[2]])

您可以调整助手功能以提取 header ,然后可以将其作为参数传递给xtable.data.frame

快速入门可能会帮助您入门

关于r - 在candisc::cancor输出上使用xtable函数,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/25730319/

10-12 14:04