From bcd4cf2ccce85ad6f720a91fb6d1137f18bdfb94 Mon Sep 17 00:00:00 2001
From: David Schnurr <schnurr@gmail.com>
Date: Thu, 15 Sep 2016 14:00:19 +0200
Subject: [PATCH] Use clusters instead of breaks

---
 README.md                    | 4 ++--
 dist/d3-scale-cluster.min.js | 2 +-
 spec/ScaleSpec.js            | 6 +++---
 src/index.js                 | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 6105643..ad7f7c8 100644
--- a/README.md
+++ b/README.md
@@ -3,14 +3,14 @@ D3 scale that clusters data into discrete groups
 
 ###Usage
 
-This scale largely has the same API as [d3.scaleQuantile](https://github.com/d3/d3-scale/blob/master/README.md#scaleQuantile) (however we use `breaks()` instead of `quantiles()`)
+This scale largely has the same API as [d3.scaleQuantile](https://github.com/d3/d3-scale/blob/master/README.md#scaleQuantile) (however we use `clusters()` instead of `quantiles()`)
 
 ```js
 var scale = d3.scaleCluster()
     .domain([1, 2, 4, 5, 12, 43, 52, 123, 234, 1244])
     .range(['#E5D6EA', '#C798D3', '#9E58AF', '#7F3391', '#581F66', '#30003A']);
 
-var breaks = scale.breaks(); // [12, 43, 123, 234, 1244]
+var clusters = scale.clusters(); // [12, 43, 123, 234, 1244]
 var color = scale(52); // '#9E58AF'
 var extent = scale.invertExtent('#9E58AF'); // [43, 123]
 ```
diff --git a/dist/d3-scale-cluster.min.js b/dist/d3-scale-cluster.min.js
index 2805519..cfbc3fd 100644
--- a/dist/d3-scale-cluster.min.js
+++ b/dist/d3-scale-cluster.min.js
@@ -1 +1 @@
-!function(r){function n(e){if(t[e])return t[e].exports;var o=t[e]={exports:{},id:e,loaded:!1};return r[e].call(o.exports,o,o.exports,n),o.loaded=!0,o.exports}var t={};return n.m=r,n.c=t,n.p="",n(0)}([function(r,n,t){function e(){function r(){if(!(a.length<=2)){n=o(t,a.length),u=[];for(var r=0;r<n.length;r++)u.push(n[r][0])}}var n=[],t=[],a=[],u=[],f=function(r){if(0!==n.length){for(var t=u.length-1;t>=0;t--)if(r>=u[t])return a[t];return a[0]}};return f.domain=function(){return arguments.length?(t=arguments[0],r(),f):t},f.range=function(){if(arguments.length){var n=arguments[0],t=n.length!==a.length;return a=n,t&&r(),f}return a},f.invertExtent=function(r){for(var n=NaN,t=NaN,e=0;e<a.length;e++)if(a[e]===r){n=u[e],t=e+1<a.length?u[e+1]:NaN;break}return[n,t]},f.breaks=function(){return u.slice(1)},f.copy=function(){return e().domain(t).range(a)},f}var o=t(1);"object"==typeof d3&&(d3.scaleCluster=e),r.exports=e},function(r,n){function t(r){return r.slice().sort(function(r,n){return r-n})}function e(r){for(var n,t=0,e=0;e<r.length;e++)0!==e&&r[e]===n||(n=r[e],t++);return t}function o(r,n){for(var t=[],e=0;e<r;e++){for(var o=[],a=0;a<n;a++)o.push(0);t.push(o)}return t}function a(r,n){if(n>r.length)throw new Error("Cannot generate more classes than there are data values");var a=t(r),u=e(a);if(1===u)return[a];for(var f=o(n,a.length),i=o(n,a.length),l=0;l<n;l++)for(var h=a[0],c=Math.max(l,1);c<a.length;c++)if(0===l){var s=Math.pow(a[c]-h,2);f[l][c]=f[l][c-1]+c/(c+1)*s;var g=c*h+a[c];h=g/(c+1)}else for(var v=0,p=0,d=c;d>=l;d--)v+=(c-d)/(c-d+1)*Math.pow(a[d]-p,2),p=(a[d]+(c-d)*p)/(c-d+1),d===c?(f[l][c]=v,i[l][c]=d,d>0&&(f[l][c]+=f[l-1][d-1])):0===d?v<=f[l][c]&&(f[l][c]=v,i[l][c]=d):v+f[l-1][d-1]<f[l][c]&&(f[l][c]=v+f[l-1][d-1],i[l][c]=d);var x=[],N=i[0].length-1;for(l=i.length-1;l>=0;l--){var m=i[l][N];x[l]=a.slice(m,N+1),l>0&&(N=m-1)}return x}r.exports=a}]);
\ No newline at end of file
+!function(r){function n(e){if(t[e])return t[e].exports;var o=t[e]={exports:{},id:e,loaded:!1};return r[e].call(o.exports,o,o.exports,n),o.loaded=!0,o.exports}var t={};return n.m=r,n.c=t,n.p="",n(0)}([function(r,n,t){function e(){function r(){if(!(a.length<=2)){n=o(t,a.length),u=[];for(var r=0;r<n.length;r++)u.push(n[r][0])}}var n=[],t=[],a=[],u=[],f=function(r){if(0!==n.length){for(var t=u.length-1;t>=0;t--)if(r>=u[t])return a[t];return a[0]}};return f.domain=function(){return arguments.length?(t=arguments[0],r(),f):t},f.range=function(){if(arguments.length){var n=arguments[0],t=n.length!==a.length;return a=n,t&&r(),f}return a},f.invertExtent=function(r){for(var n=NaN,t=NaN,e=0;e<a.length;e++)if(a[e]===r){n=u[e],t=e+1<a.length?u[e+1]:NaN;break}return[n,t]},f.clusters=function(){return u.slice(1)},f.copy=function(){return e().domain(t).range(a)},f}var o=t(1);"object"==typeof d3&&(d3.scaleCluster=e),r.exports=e},function(r,n){function t(r){return r.slice().sort(function(r,n){return r-n})}function e(r){for(var n,t=0,e=0;e<r.length;e++)0!==e&&r[e]===n||(n=r[e],t++);return t}function o(r,n){for(var t=[],e=0;e<r;e++){for(var o=[],a=0;a<n;a++)o.push(0);t.push(o)}return t}function a(r,n){if(n>r.length)throw new Error("Cannot generate more classes than there are data values");var a=t(r),u=e(a);if(1===u)return[a];for(var f=o(n,a.length),i=o(n,a.length),l=0;l<n;l++)for(var c=a[0],h=Math.max(l,1);h<a.length;h++)if(0===l){var s=Math.pow(a[h]-c,2);f[l][h]=f[l][h-1]+h/(h+1)*s;var g=h*c+a[h];c=g/(h+1)}else for(var v=0,p=0,d=h;d>=l;d--)v+=(h-d)/(h-d+1)*Math.pow(a[d]-p,2),p=(a[d]+(h-d)*p)/(h-d+1),d===h?(f[l][h]=v,i[l][h]=d,d>0&&(f[l][h]+=f[l-1][d-1])):0===d?v<=f[l][h]&&(f[l][h]=v,i[l][h]=d):v+f[l-1][d-1]<f[l][h]&&(f[l][h]=v+f[l-1][d-1],i[l][h]=d);var x=[],N=i[0].length-1;for(l=i.length-1;l>=0;l--){var m=i[l][N];x[l]=a.slice(m,N+1),l>0&&(N=m-1)}return x}r.exports=a}]);
\ No newline at end of file
diff --git a/spec/ScaleSpec.js b/spec/ScaleSpec.js
index 7ea0048..67727a2 100644
--- a/spec/ScaleSpec.js
+++ b/spec/ScaleSpec.js
@@ -9,13 +9,13 @@ describe('Scale', function () {
     scale = d3scaleCluster();
   });
 
-  it('should find natural breaks', function () {
+  it('should find clusters', function () {
     scale
       .domain(DEFAULT_DOMAIN)
       .range(DEFAULT_RANGE);
 
-    var breaks = scale.breaks();
-    expect(breaks).toEqual([12, 43, 123, 234, 1244]);
+    var clusters = scale.clusters();
+    expect(clusters).toEqual([12, 43, 123, 234, 1244]);
     expect(scale(52)).toEqual('c');
   });
 
diff --git a/src/index.js b/src/index.js
index 1e20640..9b7cbda 100644
--- a/src/index.js
+++ b/src/index.js
@@ -67,7 +67,7 @@ function d3scaleCluster () {
     return [extentA, extentB];
   };
 
-  scale.breaks = function () {
+  scale.clusters = function () {
     return breakpoints.slice(1);
   };