GNU Astronomy Utilities - Bugs: bug #59904, Large aperture can easily fill...
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bug #59904: Large aperture can easily fill memory in sort-based match
Submitter: | Mohammad Akhlaghi <makhlaghi> | ||
Submitted: | Mon 18 Jan 2021 01:08:10 PM UTC | ||
Category: | Match | Severity: | 3 - Normal |
Item Group: | Crash | Status: | Confirmed |
Privacy: | Public | Assigned to: | None |
Open/Closed: | Open |
Mon 18 Jan 2021 01:11:14 PM UTC, comment #1: |
Mohammad Akhlaghi <makhlaghi> |
Mon 18 Jan 2021 01:08:10 PM UTC, original submission:
The sort-based match algorithm which is currently used in the Match program makes a linked list of nearby points (within the given aperture) between the two catalogs to find the best match between them. This is necessary to make sure that the order of the input catalogs doesn't affect the final result (see the comments in the 'match_coordinates_second_in_first' function for more).
|
Mohammad Akhlaghi <makhlaghi> |
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Corresponding source code
Small typo: at the end of the original post, the aperture size written in text (0.1 arcsec) didn't match the example option value (0.5 arcsec).
They should both be the same value (any one of 0.1 or 0.5 is fine, with 0.1 giving a faster result).