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[task #15713] Make quad structure with hashes and store in kd-tree


From: Sachin Kumar Singh
Subject: [task #15713] Make quad structure with hashes and store in kd-tree
Date: Mon, 10 Aug 2020 18:32:55 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Update of task #15713 (project gnuastro):

                  Status:             In Progress => Done                   
             Open/Closed:                    Open => Closed                 

    _______________________________________________________

Follow-up Comment #30:

The quad structure is done. The final quads(first 5 only) that are calculated
for `gaia-in-img.fits` are:

      Cx              Cy                 Dx                    Dy         
relative-brightness
-0.042045981178532 0.34919199605225   0.80225214850384   -0.031715181861999   
   16680  
-0.42912677307865  0.23124787571642   0.0030258526555867 -0.6378191420571     
   6180   
0.50230279083754   0.062025798026402  0.47054766298457   -0.46075964254161    
   4740   
-0.24623018102375  0.43235834600382   0.47197948070874   0.45009254323365     
   4740   
-0.26651345944186  0.44315227474372   0.35932303392371   -0.55776209603448    
   6210   

For now only Cx, cy, dx, dy columns will be finally made to be used as the
input to be used by the kd-tree. Relative brightness will later be used to
choose the quad out the all the possible quad candidates.
You can check all the code here
<https://gitlab.com/sachinkumarsingh092/gnuastro-matching-fits-nohealpix>.
With all this done this task can be closed now:-)

    _______________________________________________________

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