README.md

In shoebodh/radialpsd: Calculates Radially Averaged Power Spectrum (periodograms) of a 2D matrix

radialpsd: An R package to calculate radially averaged periodograms (or r-spectrum) of matrices.

This package is based on the methods described by Mugglestone and Rainshaw (1998). The r-spectra are calculated by averaging the fourier coefficients produced by base R's fft() after transforming the cartesian coordinates into polar. Both omni-directional (i.e., over a circular region defined the distance) and directinal (averaged over a slice confined by an angle +- offset) can be calculated

This package is in part also inspired from the following Matalb code. https://www.mathworks.com/matlabcentral/fileexchange/23636-radially-averaged-power-spectrum-of-2d-real-valued-matrix

References: Mugglestone, M. A., and E. Rainshaw. 1998.Detection of geological lineations on aerial photographs using two-dimensional spectral analysis. Computers and Geosciences, 24(8):771-784

shoebodh/radialpsd documentation built on May 29, 2019, 9:26 p.m.