plot.Tenv: Plot coefficients and p-value for Tenv object.
In TRES: Tensor Regression with Envelope Structure

Description Usage Arguments Details Value See Also Examples

Plot method for object returned from TRR.fit and TPR.fit functions.

## S3 method for class 'Tenv'
plot(
  x,
  level = 0.05,
  main = paste0("Coefficient plot ", "(", x$method, ")"),
  main_p = paste0("P value plot ", "(", x$method, ")"),
  xlab = "",
  ylab = "",
  axes = TRUE,
  ask = TRUE,
  ...
)

`x`	An object of class `"Tenv"`, as the ones returned from `TPR.fit` or `TRR.fit`.
`level`	The significant level of p-value. Default is 0.05.
`main`	The title of coefficient plot.
`main_p`	The title of p-value plot.
`xlab`	The title of x-axis.
`ylab`	The title of y-axis.
`axes`	A logical value specifying whether the axes should be drawn.
`ask`	A logical value. If it is TRUE (default), user is prompted before the second plot is shown (if exists).
`...`	Other parameters to be passed to the plotting functions.

coef(x) must be a two-way tensor or a matrix.

Since p-value depend on \widehat{\mathrm{cov}}^{-1}\{\mathrm{vec}(\mathbf{X})\} which is unavailable for the ultra-high dimensional \mathrm{vec}(\mathbf{X}) in tensor predictor regression (TPR), the p-value plot is not provided for the object returned from TPR.fit. Therefore, for the object return from TPR.fit, only the coefficients plot is displayed. And for the object return from TRR.fit, both the coefficients plot and p-value plot are displayed.

main and main_p control the titles of coefficient plot and p-value plot separately. Some other arguments used in function graphics::image, e.g., xlim, ylim, zlim, col, xaxs, yaxs, etc., can be passed to ...

ask can be set as FALSE if the pause before the second plot is not preferred. If x is an object from TPR.fit, no pause is enabled.

No return value.

TRR.fit, TPR.fit

 data("bat")
 x <- bat$x
 y <- bat$y
 fit <- TRR.fit(x, y, method="standard")
 plot(fit)

 ## Change the significant level to 0.1
 plot(fit, level = 0.1)