Functionality to split random catalogs by HEALPixel #783
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…rites them split-by-HEALPixel
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@ashleyjross: I've created a full set of example files in:
I've verified that many of the but it would be useful if you can check everything works as expected for LSS catalog creation. |
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This looks perfect. We'll need to re-write some stuff to take advantage of it, but it should all be pretty trivial and speed everything up a lot in the end. Thanks!
…-Ashley
From: Adam Myers ***@***.***>
Date: Saturday, December 18, 2021 at 11:35 AM
To: desihub/desitarget ***@***.***>
Cc: ashleyjross ***@***.***>, Mention ***@***.***>
Subject: Re: [desihub/desitarget] Functionality to split random catalogs by HEALPixel (PR #783)
@ashleyjross<https://github.com/ashleyjross>: I've created a full set of example files in:
/global/cscratch1/sd/adamyers/forashley/dr9/2.3.0.dev5334/randoms/resolve/
I've verified that many of the desitarget.io routines work with this data model for the randoms. For example (after reading some tiles of interest into tiles):
hpdirname = "/global/cscratch1/sd/adamyers/forashley/dr9/2.3.0.dev5334/randoms/resolve/"
io.read_targets_in_tiles(hpdirname, tiles=tiles)
but it would be useful if you can check everything works as expected for LSS catalog creation.
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This PR adds functions and a command-line script to split random catalogs by HEALPixel. The resulting directory of HEALPixel-split random catalogs can be read using routines in
desitarget.iosuch asread_targets_in_tiles().Splitting takes about 2.5 hours on an interactive node for the typical random catalog size of ~930 million randoms.