Element-wise Addition of Two Hybrid Data Objects

Performs element-wise addition of two objects of class hdClass, fdClass, rdClass, or imgClass, assuming they have identical dimensions. This operation is primarily intended for internal use during iterative algorithms (e.g., functional PCA or regularized decomposition).

Usage

# S3 method for class 'hd'
obj1 + NULL

Arguments

obj1: An object of class hdClass, fdClass, rdClass, or imgClass.
obj2: Another object of the same class as obj1. If NULL, the function returns obj1.

Value

An object of the same class as obj1 and obj2, representing the element-wise sum.

Details

The dimensions of the two input objects must match exactly. The attributes from obj1 are retained.

Examples

fd1 <- fdClass(matrix(1:9, 3, 3))
fd2 <- fdClass(matrix(9:1, 3, 3))
fd_sum <- fd1 + fd2
print(fd_sum)
#> Functional Data (fdClass) Object
#> -----------------------------------
#> Dimensions: 3 x 3
#> Smoothing Parameter: 0 
#> Sparsity Parameter: 0 
#> GridPoints_v: 0.3333333 0.6666667 1 
#> -----------------------------------
#> First few rows and columns of the data:
#>      V1 V2 V3
#> [1,] 10 10 10
#> [2,] 10 10 10
#> [3,] 10 10 10