JavaScriptCollection
diff --git a/‎d3.js‎
Lines changed: 2 additions & 2 deletions b/‎d3.js‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎d3.min.js‎
Lines changed: 2 additions & 2 deletions b/‎d3.min.js‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎src/core/uninterpolate.js‎
Lines changed: 2 additions & 2 deletions b/‎src/core/uninterpolate.js‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎test/scale/linear-test.js‎
Lines changed: 6 additions & 0 deletions b/‎test/scale/linear-test.js‎
Lines changed: 6 additions & 0 deletions
@@ -844,12 +844,12 @@ d3.interpolators = [
   function(a, b) { return (typeof b === "number") && d3.interpolateNumber(+a, b); }
 ];
 function d3_uninterpolateNumber(a, b) {
-  b = 1 / (b - (a = +a));
+  b = b - (a = +a) ? 1 / (b - a) : 0;
   return function(x) { return (x - a) * b; };
 }
 
 function d3_uninterpolateClamp(a, b) {
-  b = 1 / (b - (a = +a));
+  b = b - (a = +a) ? 1 / (b - a) : 0;
   return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
 }
 d3.rgb = function(r, g, b) {
 
@@ -1,9 +1,9 @@
 function d3_uninterpolateNumber(a, b) {
-  b = 1 / (b - (a = +a));
+  b = b - (a = +a) ? 1 / (b - a) : 0;
   return function(x) { return (x - a) * b; };
 }
 
 function d3_uninterpolateClamp(a, b) {
-  b = 1 / (b - (a = +a));
+  b = b - (a = +a) ? 1 / (b - a) : 0;
   return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
 }
@@ -42,6 +42,12 @@ suite.addBatch({
         assert.equal(x(-5), "rgb(255,128,128)");
         assert.equal(x(50), "rgb(128,192,128)");
         assert.equal(x(75), "rgb(64,160,64)");
+      },
+      "an empty domain maps to the range start": function(linear) {
+        var x = linear().domain([0, 0]).range(["red", "green"]);
+        assert.equal(x(0), "rgb(255,0,0)");
+        assert.equal(x(-1), "rgb(255,0,0)");
+        assert.equal(x(1), "rgb(255,0,0)");
       }
     },
Original file line number	Diff line number	Diff line change
`@@ -844,12 +844,12 @@ d3.interpolators = [`
`844`	`844`	`function(a, b) { return (typeof b === "number") && d3.interpolateNumber(+a, b); }`
`845`	`845`	`];`
`846`	`846`	`function d3_uninterpolateNumber(a, b) {`
`847`		`- b = 1 / (b - (a = +a));`
	`847`	`+ b = b - (a = +a) ? 1 / (b - a) : 0;`
`848`	`848`	`return function(x) { return (x - a) * b; };`
`849`	`849`	`}`
`850`	`850`
`851`	`851`	`function d3_uninterpolateClamp(a, b) {`
`852`		`- b = 1 / (b - (a = +a));`
	`852`	`+ b = b - (a = +a) ? 1 / (b - a) : 0;`
`853`	`853`	`return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };`
`854`	`854`	`}`
`855`	`855`	`d3.rgb = function(r, g, b) {`
Original file line number	Diff line number	Diff line change
`@@ -1,9 +1,9 @@`
`1`	`1`	`function d3_uninterpolateNumber(a, b) {`
`2`		`- b = 1 / (b - (a = +a));`
	`2`	`+ b = b - (a = +a) ? 1 / (b - a) : 0;`
`3`	`3`	`return function(x) { return (x - a) * b; };`
`4`	`4`	`}`
`5`	`5`
`6`	`6`	`function d3_uninterpolateClamp(a, b) {`
`7`		`- b = 1 / (b - (a = +a));`
	`7`	`+ b = b - (a = +a) ? 1 / (b - a) : 0;`
`8`	`8`	`return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };`
`9`	`9`	`}`