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[[h3c]]

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h3c [2016/08/09 10:18]
Gilles Landais
h3c [2020/06/30 16:20] (current)
Gilles Landais
Line 1: Line 1:
====== H3C: a PostgreSQL library to deal with positions ====== ====== H3C: a PostgreSQL library to deal with positions ======
-H3C (**H**EALPix-**T**ree -**C**) is a PostgreSQL library which contains functions to index positions (ra,de) with [[http://healpix.jpl.nasa.gov/index.shtml|HEALPix]] and others usefull functions like cone search, crossmatch, etc.<note>H3C is largely inspired from [[http://code.google.com/p/q3c/|Q3C]] which is based on Qbox. The functions are similar in name and in functionnalities in the both library (except the prefix name and the Polygons functions limited for convex only in H3C). +H3C (**H**EALPix-**T**ree -**C**) is a PostgreSQL library which contains functions to index positions (ra,de) with [[http://healpix.jpl.nasa.gov/index.shtml|HEALPix]] and others useful functions like cone search, crossmatch, etc. 
 +<note>H3C is based on [[http://code.google.com/p/q3c/|Q3C]]. The functions are similar in name and in functionalities in the both library (except the prefix name and the Polygons functions limited for convex only in H3C).</note>
-H3C uses the HEALPix library maintained by the Nasa. +[[http://www.postgresql.org/|{{ :postgres.gif }}]] | [[http://healpix.jpl.nasa.gov/index.shtml|{{ https://healpix.jpl.nasa.gov/images/healpixGridRefinement.jpg }}]]
-For efficiency, get the last 64bits version of the library {{:healpixcxx-nov12-2012-src.tar.gz|using this link}}.</note>+
 +H3C uses the HEALPix library provided by the Nasa :
 +[[http://sourceforge.net/projects/healpix/|http://sourceforge.net/projects/healpix/]]
  * [[http://cdsarc.u-strasbg.fr/h3c/|H3C documentation]]   * [[http://cdsarc.u-strasbg.fr/h3c/|H3C documentation]]
  * [[http://cdsarc.u-strasbg.fr/h3c/licence.html|GPL Licence]]   * [[http://cdsarc.u-strasbg.fr/h3c/licence.html|GPL Licence]]
-  * {{:h3c_1_1_6.tar.gz|h3c_1_1_8.tar.gz}} Download sources (V1.1.8 - 09-Aug-2016) +  * {{:cds_h3c_1_1_9.tar.gz|h3c_1_1_9.tar.gz}} Download sources (V1.1.9 - 29-Aug-2020)  
 +  * {{:h3c_1_1_8.tar.gz|h3c_1_1_8.tar.gz}} Download sources (V1.1.8 - 09-Aug-2016)
  * {{:h3c_1_1_6.tar.gz|h3c_1_1_6.tar.gz}} Download sources (V1.1.6 - 20-Oct-2015)   * {{:h3c_1_1_6.tar.gz|h3c_1_1_6.tar.gz}} Download sources (V1.1.6 - 20-Oct-2015)
  * {{:h3c_1_1_5.tar.gz|h3c_1_1_5.tar.gz}} Download sources (V1.1.5 - 21-Aug-2015)   * {{:h3c_1_1_5.tar.gz|h3c_1_1_5.tar.gz}} Download sources (V1.1.5 - 21-Aug-2015)
  * {{:h3c_1_1_2.tar.gz|h3c_1_1_2.tar.gz}} Download sources (V1.1.2)   * {{:h3c_1_1_2.tar.gz|h3c_1_1_2.tar.gz}} Download sources (V1.1.2)
- 
-[[http://www.postgresql.org/|{{ :postgres.gif  }}]] 
<note important>Depending of the PostgreSQL installation, H3C needs an appropriate tuning. see [[http://cdsarc.u-strasbg.fr/h3c/notes.html|H3C tuning]]. <note important>Depending of the PostgreSQL installation, H3C needs an appropriate tuning. see [[http://cdsarc.u-strasbg.fr/h3c/notes.html|H3C tuning]].
</note> </note>
h3c.1470730681.txt.gz · Last modified: 2016/08/09 10:18 by Gilles Landais

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