Examples

These examples use real MaNGA cubes.

MaNGA segmentation mosaic

Real MaNGA inputs and Capivara region maps. Colours identify regions and do not represent an ordered quantity.

The panels show the IFS cube, spatial support, and spectral regions. Use summarize_cluster_spectra() to obtain the summed regional spectra.

Exact and sparse-graph comparison

MaNGA 8443-6102 segmented with segment() and segment_large(), with and without starlet support.

For a new observed cube:

library(capivara)
library(FITSio)

cube <- FITSio::readFITS("/path/to/input_cube.fits")

seg <- segment_large(
  input = cube,
  Ncomp = 25,
  use_starlet_mask = TRUE,
  starlet_J = 5,
  starlet_scales = 2:5,
  include_coarse = FALSE,
  denoise_k = 0,
  positive_only = TRUE,
  mask_mode = "na",
  knn_k = 100
)

regional_spectra <- summarize_cluster_spectra(seg)$sum_spectra

Replace the path with a local FITS cube. The Get Started guide provides a runnable simulation.

Kinematic and model-specific examples

The Kinematic Analysis guide covers line maps and an axisymmetric disc model. The Bar Model guide adds bisymmetric terms for a known barred galaxy.