shapepipe.modules.random_cat_package.random_cat

shapepipe.modules.random_cat_package.random_cat

RANDOM CATALOGUE.

This module contains a class to create a random catalogue, and to compute the tile area accounting for overlapping and masked regions.

Author

Martin Kilbinger <martin.kilbinger@cea.fr>

class RandomCat(input_image_path, input_mask_path, output_dir, file_number_string, output_file_pattern, n_rand, density, w_log, healpix_options)[source]

Bases: object

Random Catalogue.

This class creates a random catalogue given a mask FITS file.

Parameters

  • input_image_path (str) – Path to input image file

  • input_mask_path (str) – Path to input mask file

  • output_dir (str) – Output directory

  • file_number_pattern (str) – ShapePipe image ID string

  • output_file_pattern (str) – Output file pattern (base name) for random catalogue

  • n_rand (float) – Number of random objects on output

  • density (bool) – n_rand is interpreted per square degrees if True

  • w_log (logging.Logger) – Logging instance

  • healpix_options (dict) – Parameters for HEALPix output mask file

save_as_healpix(mask, header)[source]

Save As Healpix.

Save mask as healpix FITS file.

Parameters

  • mask (numpy.ndarray) – 2D pixel mask image

  • header (class Header) – Image header with WCS information

process()[source]

Process.

Main function to identify exposures.

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