diff --git a/d3.js b/d3.js
index e29dfe06..b1d2e578 100644
--- a/d3.js
+++ b/d3.js
@@ -1,4 +1,4 @@
-d3 = {version: "0.28.2"}; // semver
+d3 = {version: "0.28.3"}; // semver
 if (!Date.now) Date.now = function() {
   return +new Date();
 };
@@ -1928,18 +1928,34 @@ d3["svg"]["arc"] = function() {
         a0 = startAngle.call(this, d, i) + d3_svg_arcOffset,
         a1 = endAngle.call(this, d, i) + d3_svg_arcOffset,
         da = a1 - a0,
+        df = da < Math.PI ? "0" : "1",
         c0 = Math.cos(a0),
         s0 = Math.sin(a0),
         c1 = Math.cos(a1),
         s1 = Math.sin(a1);
-    return "M" + r1 * c0 + "," + r1 * s0
-        + "A" + r1 + "," + r1 + " 0 "
-        + ((da < Math.PI) ? "0" : "1") + ",1 "
-        + r1 * c1 + "," + r1 * s1
-        + "L" + r0 * c1 + "," + r0 * s1
-        + "A" + r0 + "," + r0 + " 0 "
-        + ((da < Math.PI) ? "0" : "1") + ",0 "
-        + r0 * c0 + "," + r0 * s0 + "Z";
+    return da >= 2 * Math.PI
+      ? (r0
+      ? "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "M0," + r0
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + (-r0)
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + r0
+      + "Z"
+      : "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "Z")
+      : (r0
+      ? "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L" + r0 * c1 + "," + r0 * s1
+      + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+      + "Z"
+      : "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L0,0"
+      + "Z");
   }
 
   arc["innerRadius"] = function(v) {
diff --git a/d3.min.js b/d3.min.js
index 87bda89e..5f3f0a15 100644
--- a/d3.min.js
+++ b/d3.min.js
@@ -1,64 +1,64 @@
-(function(){var n=null;d3={version:"0.28.2"};if(!Date.now)Date.now=function(){return+new Date};if(!Object.create)Object.create=function(a){function b(){}b.prototype=a;return new b};function x(a){return Array.prototype.slice.call(a)}function y(a){return typeof a=="function"?a:function(){return a}}d3.ascending=function(a,b){return a<b?-1:a>b?1:0};d3.descending=function(a,b){return b<a?-1:b>a?1:0};d3.merge=function(a){return Array.prototype.concat.apply([],a)};
-d3.split=function(a,b){var c=[],f=[],d,e=-1,h=a.length;if(arguments.length<2)b=aa;for(;++e<h;)if(b.call(f,d=a[e],e)){c.push(f);f=[]}else f.push(d);c.push(f);return c};function aa(a){return a==n}function E(a){return a.replace(/(^\s+)|(\s+$)/g,"").replace(/\s+/g," ")}function ba(a,b){b=x(arguments);b[0]=this;a.apply(this,b);return this}
-d3.range=function(a,b,c){if(arguments.length==1){b=a;a=0}if(c==n)c=1;if((b-a)/c==Infinity)throw Error("infinite range");var f=[],d=-1,e;if(c<0)for(;(e=a+c*++d)>b;)f.push(e);else for(;(e=a+c*++d)<b;)f.push(e);return f};d3.requote=function(a){return a.replace(ca,"\\$&")};var ca=/[\\\^\$\*\+\?\[\]\(\)\.\{\}]/g;
-d3.xhr=function(a,b,c){var f=new XMLHttpRequest;if(arguments.length<3)c=b;else b&&f.overrideMimeType(b);f.open("GET",a,true);f.onreadystatechange=function(){if(f.readyState==4)c(f.status<300?f:n)};f.send(n)};d3.text=function(a,b,c){if(arguments.length<3){c=b;b=n}d3.xhr(a,b,function(f){c(f&&f.responseText)})};d3.json=function(a,b){d3.text(a,"application/json",function(c){b(c?JSON.parse(c):n)})};
-d3.html=function(a,b){d3.text(a,"text/html",function(c){if(c!=n){var f=document.createRange();f.selectNode(document.body);c=f.createContextualFragment(c)}b(c)})};d3.xml=function(a,b,c){if(arguments.length<3){c=b;b=n}d3.xhr(a,b,function(f){c(f&&f.responseXML)})};
+(function(){var o=null;d3={version:"0.28.3"};if(!Date.now)Date.now=function(){return+new Date};if(!Object.create)Object.create=function(a){function b(){}b.prototype=a;return new b};function x(a){return Array.prototype.slice.call(a)}function y(a){return typeof a=="function"?a:function(){return a}}d3.ascending=function(a,b){return a<b?-1:a>b?1:0};d3.descending=function(a,b){return b<a?-1:b>a?1:0};d3.merge=function(a){return Array.prototype.concat.apply([],a)};
+d3.split=function(a,b){var c=[],f=[],d,e=-1,i=a.length;if(arguments.length<2)b=aa;for(;++e<i;)if(b.call(f,d=a[e],e)){c.push(f);f=[]}else f.push(d);c.push(f);return c};function aa(a){return a==o}function E(a){return a.replace(/(^\s+)|(\s+$)/g,"").replace(/\s+/g," ")}function ba(a,b){b=x(arguments);b[0]=this;a.apply(this,b);return this}
+d3.range=function(a,b,c){if(arguments.length==1){b=a;a=0}if(c==o)c=1;if((b-a)/c==Infinity)throw Error("infinite range");var f=[],d=-1,e;if(c<0)for(;(e=a+c*++d)>b;)f.push(e);else for(;(e=a+c*++d)<b;)f.push(e);return f};d3.requote=function(a){return a.replace(ca,"\\$&")};var ca=/[\\\^\$\*\+\?\[\]\(\)\.\{\}]/g;
+d3.xhr=function(a,b,c){var f=new XMLHttpRequest;if(arguments.length<3)c=b;else b&&f.overrideMimeType(b);f.open("GET",a,true);f.onreadystatechange=function(){if(f.readyState==4)c(f.status<300?f:o)};f.send(o)};d3.text=function(a,b,c){if(arguments.length<3){c=b;b=o}d3.xhr(a,b,function(f){c(f&&f.responseText)})};d3.json=function(a,b){d3.text(a,"application/json",function(c){b(c?JSON.parse(c):o)})};
+d3.html=function(a,b){d3.text(a,"text/html",function(c){if(c!=o){var f=document.createRange();f.selectNode(document.body);c=f.createContextualFragment(c)}b(c)})};d3.xml=function(a,b,c){if(arguments.length<3){c=b;b=o}d3.xhr(a,b,function(f){c(f&&f.responseXML)})};
 d3.ns={prefix:{svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"},qualify:function(a){var b=a.indexOf(":");return b<0?a:{space:d3.ns.prefix[a.substring(0,b)],local:a.substring(b+1)}}};d3.dispatch=function(){for(var a={},b,c=0,f=arguments.length;c<f;c++){b=arguments[c];a[b]=da(b)}return a};
 function da(){var a={},b=[];a.add=function(c){for(var f=0;f<b.length;f++)if(b[f].i==c)return a;b.push({i:c,on:true});return a};a.remove=function(c){for(var f=0;f<b.length;f++){var d=b[f];if(d.i==c){d.on=false;b=b.slice(0,f).concat(b.slice(f+1));break}}return a};a.dispatch=function(){for(var c=b,f=0,d=c.length;f<d;f++){var e=c[f];e.on&&e.i.apply(this,arguments)}};return a}
-d3.format=function(a){a=ea.exec(a);var b=a[1]||" ",c=a[5],f=+a[6],d=a[7],e=a[8],h=a[9];if(e)e=e.substring(1);if(c)b="0";if(h=="d")e="0";return function(g){if(h=="d"&&g%1)return"";if(e)g=(+g).toFixed(e);else g+="";if(d){for(var i=g.lastIndexOf("."),j=i>=0?g.substring(i):(i=g.length,""),l=[];i>0;)l.push(g.substring(i-=3,i+3));g=l.reverse().join(",")+j}i=g.length;if(i<f)g=Array(f-i+1).join(b)+g;return g}};
+d3.format=function(a){a=ea.exec(a);var b=a[1]||" ",c=a[5],f=+a[6],d=a[7],e=a[8],i=a[9];if(e)e=e.substring(1);if(c)b="0";if(i=="d")e="0";return function(g){if(i=="d"&&g%1)return"";if(e)g=(+g).toFixed(e);else g+="";if(d){for(var h=g.lastIndexOf("."),j=h>=0?g.substring(h):(h=g.length,""),l=[];h>0;)l.push(g.substring(h-=3,h+3));g=l.reverse().join(",")+j}h=g.length;if(h<f)g=Array(f-h+1).join(b)+g;return g}};
 var ea=/(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/,fa=F(2),ga=F(3),oa={linear:function(){return ha},poly:F,quad:function(){return fa},cubic:function(){return ga},sin:function(){return ia},exp:function(){return ja},circle:function(){return ka},elastic:la,back:ma,bounce:function(){return na}},ra={"in":function(a){return a},out:pa,"in-out":qa,"out-in":function(a){return qa(pa(a))}};
-d3.ease=function(a){var b=a.indexOf("-");return ra[b>=0?a.substring(b+1):"in"](oa[b>=0?a.substring(0,b):a].apply(n,Array.prototype.slice.call(arguments,1)))};function pa(a){return function(b){return 1-a(1-b)}}function qa(a){return function(b){return 0.5*(b<0.5?a(2*b):2-a(2-2*b))}}function ha(a){return a}function F(a){return function(b){return Math.pow(b,a)}}function ia(a){return 1-Math.cos(a*Math.PI/2)}function ja(a){return a?Math.pow(2,10*(a-1))-0.0010:0}
-function ka(a){return 1-Math.sqrt(1-a*a)}function la(a,b){var c;if(arguments.length<2)b=0.45;if(arguments.length<1){a=1;c=b/4}else c=b/(2*Math.PI)*Math.asin(1/a);return function(f){return 1+a*Math.pow(2,10*-f)*Math.sin((f-c)*2*Math.PI/b)}}function ma(a){a||(a=1.70158);return function(b){return b*b*((a+1)*b-a)}}function na(a){return a<1/2.75?7.5625*a*a:a<2/2.75?7.5625*(a-=1.5/2.75)*a+0.75:a<2.5/2.75?7.5625*(a-=2.25/2.75)*a+0.9375:7.5625*(a-=2.625/2.75)*a+0.984375}d3.event=n;
+d3.ease=function(a){var b=a.indexOf("-");return ra[b>=0?a.substring(b+1):"in"](oa[b>=0?a.substring(0,b):a].apply(o,Array.prototype.slice.call(arguments,1)))};function pa(a){return function(b){return 1-a(1-b)}}function qa(a){return function(b){return 0.5*(b<0.5?a(2*b):2-a(2-2*b))}}function ha(a){return a}function F(a){return function(b){return Math.pow(b,a)}}function ia(a){return 1-Math.cos(a*Math.PI/2)}function ja(a){return a?Math.pow(2,10*(a-1))-0.0010:0}
+function ka(a){return 1-Math.sqrt(1-a*a)}function la(a,b){var c;if(arguments.length<2)b=0.45;if(arguments.length<1){a=1;c=b/4}else c=b/(2*Math.PI)*Math.asin(1/a);return function(f){return 1+a*Math.pow(2,10*-f)*Math.sin((f-c)*2*Math.PI/b)}}function ma(a){a||(a=1.70158);return function(b){return b*b*((a+1)*b-a)}}function na(a){return a<1/2.75?7.5625*a*a:a<2/2.75?7.5625*(a-=1.5/2.75)*a+0.75:a<2.5/2.75?7.5625*(a-=2.25/2.75)*a+0.9375:7.5625*(a-=2.625/2.75)*a+0.984375}d3.event=o;
 d3.interpolate=function(a,b){if(typeof b=="number")return d3.interpolateNumber(+a,b);if(typeof b=="string")return b in G||/^(#|rgb\(|hsl\()/.test(b)?d3.interpolateRgb(String(a),b):d3.interpolateString(String(a),b);if(b instanceof Array)return d3.interpolateArray(a,b);return d3.interpolateObject(a,b)};d3.interpolateNumber=function(a,b){b-=a;return function(c){return a+b*c}};
-d3.interpolateString=function(a,b){var c,f,d=0,e=[],h=[],g,i;for(f=0;c=H.exec(b);++f){c.index&&e.push(b.substring(d,c.index));h.push({a:e.length,x:c[0]});e.push(n);d=H.lastIndex}d<b.length&&e.push(b.substring(d));f=0;for(g=h.length;(c=H.exec(a))&&f<g;++f){i=h[f];if(i.x==c[0]){if(i.a)if(e[i.a+1]==n){e[i.a-1]+=i.x;e.splice(i.a,1);for(c=f+1;c<g;++c)h[c].a--}else{e[i.a-1]+=i.x+e[i.a+1];e.splice(i.a,2);for(c=f+1;c<g;++c)h[c].a-=2}else if(e[i.a+1]==n)e[i.a]=i.x;else{e[i.a]=i.x+e[i.a+1];e.splice(i.a+1,1);
-for(c=f+1;c<g;++c)h[c].a--}h.splice(f,1);g--;f--}else i.x=d3.interpolateNumber(parseFloat(c[0]),parseFloat(i.x))}for(;f<g;){i=h.pop();if(e[i.a+1]==n)e[i.a]=i.x;else{e[i.a]=i.x+e[i.a+1];e.splice(i.a+1,1)}g--}if(e.length==1)return e[0]==n?h[0].x:function(){return b};return function(j){for(f=0;f<g;++f)e[(i=h[f]).a]=i.x(j);return e.join("")}};
-d3.interpolateRgb=function(a,b){a=d3.rgb(a);b=d3.rgb(b);var c=a.r,f=a.g,d=a.b,e=b.r-c,h=b.g-f,g=b.b-d;return function(i){return"rgb("+Math.round(c+e*i)+","+Math.round(f+h*i)+","+Math.round(d+g*i)+")"}};d3.interpolateArray=function(a,b){var c=[],f=[],d=a.length,e=b.length,h=Math.min(a.length,b.length),g;for(g=0;g<h;++g)c.push(d3.interpolate(a[g],b[g]));for(;g<d;++g)f[g]=a[g];for(;g<e;++g)f[g]=b[g];return function(i){for(g=0;g<h;++g)f[g]=c[g](i);return f}};
+d3.interpolateString=function(a,b){var c,f,d=0,e=[],i=[],g,h;for(f=0;c=H.exec(b);++f){c.index&&e.push(b.substring(d,c.index));i.push({a:e.length,x:c[0]});e.push(o);d=H.lastIndex}d<b.length&&e.push(b.substring(d));f=0;for(g=i.length;(c=H.exec(a))&&f<g;++f){h=i[f];if(h.x==c[0]){if(h.a)if(e[h.a+1]==o){e[h.a-1]+=h.x;e.splice(h.a,1);for(c=f+1;c<g;++c)i[c].a--}else{e[h.a-1]+=h.x+e[h.a+1];e.splice(h.a,2);for(c=f+1;c<g;++c)i[c].a-=2}else if(e[h.a+1]==o)e[h.a]=h.x;else{e[h.a]=h.x+e[h.a+1];e.splice(h.a+1,1);
+for(c=f+1;c<g;++c)i[c].a--}i.splice(f,1);g--;f--}else h.x=d3.interpolateNumber(parseFloat(c[0]),parseFloat(h.x))}for(;f<g;){h=i.pop();if(e[h.a+1]==o)e[h.a]=h.x;else{e[h.a]=h.x+e[h.a+1];e.splice(h.a+1,1)}g--}if(e.length==1)return e[0]==o?i[0].x:function(){return b};return function(j){for(f=0;f<g;++f)e[(h=i[f]).a]=h.x(j);return e.join("")}};
+d3.interpolateRgb=function(a,b){a=d3.rgb(a);b=d3.rgb(b);var c=a.r,f=a.g,d=a.b,e=b.r-c,i=b.g-f,g=b.b-d;return function(h){return"rgb("+Math.round(c+e*h)+","+Math.round(f+i*h)+","+Math.round(d+g*h)+")"}};d3.interpolateArray=function(a,b){var c=[],f=[],d=a.length,e=b.length,i=Math.min(a.length,b.length),g;for(g=0;g<i;++g)c.push(d3.interpolate(a[g],b[g]));for(;g<d;++g)f[g]=a[g];for(;g<e;++g)f[g]=b[g];return function(h){for(g=0;g<i;++g)f[g]=c[g](h);return f}};
 d3.interpolateObject=function(a,b){var c={},f={},d;for(d in a)if(d in b)c[d]=(d in sa||/\bcolor\b/.test(d)?d3.interpolateRgb:d3.interpolate)(a[d],b[d]);else f[d]=a[d];for(d in b)d in a||(f[d]=b[d]);return function(e){for(d in c)f[d]=c[d](e);return f}};var H=/[-+]?(?:\d+\.\d+|\d+\.|\.\d+|\d+)(?:[eE][-]?\d+)?/g,sa={background:1,fill:1,stroke:1};d3.rgb=function(a,b,c){return arguments.length==1?I(""+a,J,ta):J(~~a,~~b,~~c)};function J(a,b,c){return{r:a,g:b,b:c,toString:ua}}
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-d,e)}function va(a,b,c){var f=Math.min(a/=255,b/=255,c/=255),d=Math.max(a,b,c),e=d-f,h=(d+f)/2;if(e){f=h<0.5?e/(d+f):e/(2-d-f);a=a==d?(b-c)/e+(b<c?6:0):b==d?(c-a)/e+2:(a-b)/e+4;a*=60}else f=a=0;return M(a,f,h)}function L(a){var b=parseFloat(a);return a.charAt(a.length-1)=="%"?Math.round(b*2.55):b}
+function I(a,b,c){var f,d,e,i,g;if(i=/([a-z]+)\((.*)\)/i.exec(a)){g=i[2].split(",");switch(i[1]){case "hsl":return c(parseFloat(g[0]),parseFloat(g[1])/100,parseFloat(g[2])/100);case "rgb":return b(L(g[0]),L(g[1]),L(g[2]))}}if(c=G[a])return b(c.r,c.g,c.b);if(a==o)return b(0,0,0);if(a.charAt(0)=="#"){if(a.length==4){f=a.charAt(1);f+=f;d=a.charAt(2);d+=d;e=a.charAt(3);e+=e}else if(a.length==7){f=a.substring(1,3);d=a.substring(3,5);e=a.substring(5,7)}f=parseInt(f,16);d=parseInt(d,16);e=parseInt(e,16)}return b(f,
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-d3.svg.area=function(){function a(h){return h.length<1?n:"M"+e(W(this,h,b,f))+"L"+e(W(this,h,b,c).reverse())+"Z"}var b=Na,c=Ua,f=Oa,d="linear",e=X[d];a.x=function(h){if(!arguments.length)return b;b=h;return a};a.y0=function(h){if(!arguments.length)return c;c=h;return a};a.y1=function(h){if(!arguments.length)return f;f=h;return a};a.interpolate=function(h){if(!arguments.length)return d;e=X[d=h];return a};return a};function Ua(){return 0}
-d3.svg.chord=function(){function a(g,i){var j=b(this,c,g,i),l=b(this,f,g,i);return"M"+j.c+("A"+j.r+","+j.r+" 0 0,1 "+j.p)+(j.k==l.k&&j.m==l.m?"Q 0,0 "+j.c:"Q 0,0 "+l.c+("A"+l.r+","+l.r+" 0 0,1 "+l.p)+("Q 0,0 "+j.c))+"Z"}function b(g,i,j,l){var p=i.call(g,j,l);i=d.call(g,p,l);j=e.call(g,p,l)+V;g=h.call(g,p,l)+V;return{r:i,k:j,m:g,c:[i*Math.cos(j),i*Math.sin(j)],p:[i*Math.cos(g),i*Math.sin(g)]}}var c=Va,f=Wa,d=Xa,e=La,h=Ma;a.radius=function(g){if(!arguments.length)return d;d=y(g);return a};a.source=
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+d3.svg.area=function(){function a(i){return i.length<1?o:"M"+e(W(this,i,b,f))+"L"+e(W(this,i,b,c).reverse())+"Z"}var b=Na,c=Ua,f=Oa,d="linear",e=X[d];a.x=function(i){if(!arguments.length)return b;b=i;return a};a.y0=function(i){if(!arguments.length)return c;c=i;return a};a.y1=function(i){if(!arguments.length)return f;f=i;return a};a.interpolate=function(i){if(!arguments.length)return d;e=X[d=i];return a};return a};function Ua(){return 0}
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diff --git a/src/core/core.js b/src/core/core.js
index f65dd22a..3afc66e5 100644
--- a/src/core/core.js
+++ b/src/core/core.js
@@ -1 +1 @@
-d3 = {version: "0.28.2"}; // semver
+d3 = {version: "0.28.3"}; // semver
diff --git a/src/svg/arc.js b/src/svg/arc.js
index 87ccb885..a23a227c 100644
--- a/src/svg/arc.js
+++ b/src/svg/arc.js
@@ -10,18 +10,34 @@ d3["svg"]["arc"] = function() {
         a0 = startAngle.call(this, d, i) + d3_svg_arcOffset,
         a1 = endAngle.call(this, d, i) + d3_svg_arcOffset,
         da = a1 - a0,
+        df = da < Math.PI ? "0" : "1",
         c0 = Math.cos(a0),
         s0 = Math.sin(a0),
         c1 = Math.cos(a1),
         s1 = Math.sin(a1);
-    return "M" + r1 * c0 + "," + r1 * s0
-        + "A" + r1 + "," + r1 + " 0 "
-        + ((da < Math.PI) ? "0" : "1") + ",1 "
-        + r1 * c1 + "," + r1 * s1
-        + "L" + r0 * c1 + "," + r0 * s1
-        + "A" + r0 + "," + r0 + " 0 "
-        + ((da < Math.PI) ? "0" : "1") + ",0 "
-        + r0 * c0 + "," + r0 * s0 + "Z";
+    return da >= 2 * Math.PI
+      ? (r0
+      ? "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "M0," + r0
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + (-r0)
+      + "A" + r0 + "," + r0 + " 0 1,1 0," + r0
+      + "Z"
+      : "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "Z")
+      : (r0
+      ? "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L" + r0 * c1 + "," + r0 * s1
+      + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+      + "Z"
+      : "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L0,0"
+      + "Z");
   }
 
   arc["innerRadius"] = function(v) {