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ShapeSelectForest (version 1.2)

edf0s: A 21 by 7 Matrix Storing Edf0 Vectors

Description

The object "edf0s" is a $21$ by $7$ matrix. Each row is an edf0 vector of $7$ elements corresponding to the $7$ shapes in this package. Such a vector will be used in the main routine "shape" to select the best shape for a scatterplot of Landsat signals. Each edf0 vector is simulated through a subroutine called "getedf0", using a total of $1000$ simulations with the random seed being set to $123$. Each row is an edf0 vector for an equally spaced $\bold{x}$ vector of $n$ elements (e.g., years). From the first row to the last row, the edf0 vector is for a predictor vector $\bold{x}$ of length $n$ which is an integer ranging from $20$ to $40$. The matrix is built for the convenience of users when they call the routine "shape".

If the $\bold{x}$ vector is equally spaced and its number of elements $n$ is between $20$ and $40$, then a corresponding edf0 vector will be extracted directly from this matrix and no simulation will be done, which saves a lot of time; otherwise, the subroutine "getedf0" will be called inside the routine "shape" to get an edf0 vector for $\bold{x}$. The timing depends on the number of elements in $\bold{x}$ and the shape options allowed by the user. For example, when $\bold{x}$ is an equally spaced vector of $26$ elements, the timing is about $167$ seconds if the user allows a double-jump shape and the timing is about $12$ seconds if the user doesn't allow a double-jump shape. Also, when $\bold{x}$ is not an equally spaced vector, no matter how many elements it has, "getedf0" should be called.

Usage

data("edf0s")

Arguments

Format

A 21 by 7 matrix.

See Also

shape, ShapeSelectForest-package