toolkit/javascript/d3/src/core/quantile.js
author Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
Fri, 18 Apr 2014 14:31:58 +0200
changeset 51 79833eaa394a
parent 47 c0b4a8b5a012
permissions -rw-r--r--
set up second level for navigation
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
47
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     1
// R-7 per <http://en.wikipedia.org/wiki/Quantile>
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     2
d3.quantile = function(values, p) {
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     3
  var H = (values.length - 1) * p + 1,
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     4
      h = Math.floor(H),
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     5
      v = values[h - 1],
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     6
      e = H - h;
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     7
  return e ? v + e * (values[h] - v) : v;
c0b4a8b5a012 add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
parents:
diff changeset
     8
};