本人以前用以下代码做结构方程时，可以输出潜变量值的，但是最近怎么输出不了，求大神指点一二··········
library(plspm)
  data(satisfaction)
  IMAG <- c(0,0,0,0,0,0)
  EXPE <- c(1,0,0,0,0,0)
  QUAL <- c(0,1,0,0,0,0)
  VAL  <- c(0,1,1,0,0,0)
  SAT  <- c(1,1,1,1,0,0)
  LOY  <- c(1,0,0,0,1,0)
  sat.mat <- rbind(IMAG, EXPE, QUAL, VAL, SAT, LOY)
  sat.sets <- list(1:5,6:10,11:15,16:19,20:23,24:27)
  sat.mod <- rep("A",6)   ## reflective indicators
  res2 <- plspm(satisfaction, sat.mat, sat.sets, sat.mod, scheme="centroid",
                scaled=FALSE)

  plot(res2)

plot(res2, what="weights")
  plot(res2, what="loadings")
  plot(res2, what="all")
res2$latents