Avoid divide by zero.

d3 · Aug 11, 2020 · 39f420c · 39f420c
1 parent b022f21
commit 39f420c
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/src/treemap/binary.js b/src/treemap/binary.js
@@ -34,11 +34,11 @@ export default function(parent, x0, y0, x1, y1) {
         valueRight = value - valueLeft;
 
     if ((x1 - x0) > (y1 - y0)) {
-      var xk = (x0 * valueRight + x1 * valueLeft) / value;
+      var xk = value ? (x0 * valueRight + x1 * valueLeft) / value : x1;
       partition(i, k, valueLeft, x0, y0, xk, y1);
       partition(k, j, valueRight, xk, y0, x1, y1);
     } else {
-      var yk = (y0 * valueRight + y1 * valueLeft) / value;
+      var yk = value ? (y0 * valueRight + y1 * valueLeft) / value : y1;
       partition(i, k, valueLeft, x0, y0, x1, yk);
       partition(k, j, valueRight, x0, yk, x1, y1);
     }

diff --git a/src/treemap/resquarify.js b/src/treemap/resquarify.js
@@ -18,8 +18,8 @@ export default (function custom(ratio) {
       while (++j < m) {
         row = rows[j], nodes = row.children;
         for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
-        if (row.dice) treemapDice(row, x0, y0, x1, y0 += (y1 - y0) * row.value / value);
-        else treemapSlice(row, x0, y0, x0 += (x1 - x0) * row.value / value, y1);
+        if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1);
+        else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1);
         value -= row.value;
       }
     } else {