initSGWT: Initialize SGWT object

In BioGSP: Biological Graph Signal Processing for Spatial Data Analysis

Initialize SGWT object

Description

Build an SGWT object with Data and Parameters slots, validate inputs.

Usage

initSGWT(
  data.in,
  x_col = "x",
  y_col = "y",
  signals = NULL,
  scales = NULL,
  J = 5,
  scaling_factor = 2,
  kernel_type = "heat"
)

Arguments

data.in	Data frame containing spatial coordinates and signal data
x_col	Character string specifying the column name for X coordinates (default: "x")
y_col	Character string specifying the column name for Y coordinates (default: "y")
signals	Character vector of signal column names to analyze. If NULL, all non-coordinate columns are used.
scales	Vector of scales for the wavelets. If NULL, scales are auto-generated.
J	Number of scales to generate if scales is NULL (default: 5)
scaling_factor	Scaling factor between consecutive scales (default: 2)
kernel_type	Kernel family ("mexican_hat", "meyer", or "heat") (default: "heat")

Value

SGWT object with Data and Parameters slots initialized

Examples

# Initialize SGWT object
data <- data.frame(x = runif(100), y = runif(100), 
                  signal1 = rnorm(100), signal2 = rnorm(100))
SG <- initSGWT(data, signals = c("signal1", "signal2"))

BioGSP documentation built on Feb. 2, 2026, 5:06 p.m.