vega-encode - npm Package Compare versions

Comparing version 1.0.0-beta.13 to 1.0.0-beta.14

build/vega-encode.js

@@ -815,5 +815,6 @@ (function (global, factory) {
       field = _.field || vegaUtil.one,
-      offset = _.offset,
-      groups, group, i, j, n, m,
-      max, off, scale$$1, t, a, b, v;
+      stack = _.offset === Center ? stackCenter
+            : _.offset === Normalize ? stackNormalize
+            : stackZero,
+      groups, i, n, max;
 
@@ -825,15 +826,3 @@ // partition, sum, and sort the stack groups
   for (i=0, n=groups.length, max=groups.max; i<n; ++i) {
-    group = groups[i];
-    off = offset === Center ? (max - group.sum)/2 : 0;
-    scale$$1 = offset === Normalize ? (1/group.sum) : 1;
-
-    // set stack coordinates for each datum in group
-    for (b=off, v=0, j=0, m=group.length; j<m; ++j) {
-      t = group[j];
-      a = b; // use previous value for start point
-      v += field(t);
-      b = scale$$1 * v + off; // compute end point
-      t[y0] = a;
-      t[y1] = b;
-    }
+    stack(groups[i], max, field, y0, y1);
   }
@@ -844,2 +833,46 @@
 
+function stackCenter(group, max, field, y0, y1) {
+  var last = (max - group.sum) / 2,
+      m = group.length,
+      j = 0, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    t[y0] = last;
+    t[y1] = (last += Math.abs(field(t)));
+  }
+}
+
+function stackNormalize(group, max, field, y0, y1) {
+  var scale$$1 = 1 / group.sum,
+      last = 0,
+      m = group.length,
+      j = 0, v = 0, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    t[y0] = last;
+    t[y1] = last = scale$$1 * (v += Math.abs(field(t)));
+  }
+}
+
+function stackZero(group, max, field, y0, y1) {
+  var lastPos = 0,
+      lastNeg = 0,
+      m = group.length,
+      j = 0, v, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    v = field(t);
+    if (v < 0) {
+      t[y0] = lastNeg;
+      t[y1] = (lastNeg += v);
+    } else {
+      t[y0] = lastPos;
+      t[y1] = (lastPos += v);
+    }
+  }
+}
+
 function partition(data, groupby, sort, field) {
@@ -866,3 +899,3 @@ var groups = [],
     for (i=0, s=0, n=g.length; i<n; ++i) {
-      s += field(g[i]);
+      s += Math.abs(field(g[i]));
     }
@@ -869,0 +902,0 @@ g.sum = s;

build/vega-encode.min.js

@@ -1,1 +0,1 @@
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ze={type:"LinkPath",metadata:{modifies:!0},params:[{name:"sourceX",type:"field",default:"source.x"},{name:"sourceY",type:"field",default:"source.y"},{name:"targetX",type:"field",default:"target.x"},{name:"targetY",type:"field",default:"target.y"},{name:"orient",type:"enum",default:"vertical",values:["horizontal","vertical","radial"]},{name:"shape",type:"enum",default:"line",values:["line","curve","diagonal","orthogonal"]},{name:"as",type:"string",default:"path"}]},Ce={type:"Pie",metadata:{modifies:!0},params:[{name:"field",type:"field"},{name:"startAngle",type:"number",default:0},{name:"endAngle",type:"number",default:6.283185307179586},{name:"sort",type:"boolean",default:!1},{name:"as",type:"string",array:!0,length:2,default:["startAngle","endAngle"]}]},Le={type:"Stack",metadata:{modifies:!0},params:[{name:"field",type:"field"},{name:"groupby",type:"field",array:!0},{name:"sort",type:"compare"},{name:"offset",type:"enum",default:"zero",values:["zero","center","normalize"]},{name:"as",type:"string",array:!0,length:2,default:["y0","y1"]}]};n.register(ze,z),n.register(Ce,j),n.register(Le,$),n.transform("AxisTicks",m),n.transform("DataJoin",p),n.transform("Encode",g),n.transform("LegendEntries",T),n.transform("Scale",G),e.transform=n.transform,e.definition=n.definition,e.scale=a.scale,e.scheme=a.scheme,Object.defineProperty(e,"__esModule",{value:!0})});

package.json

 {
   "name": "vega-encode",
-  "version": "1.0.0-beta.13",
+  "version": "1.0.0-beta.14",
   "description": "Visual encoding transforms for Vega dataflows.",
@@ -5,0 +5,0 @@ "keywords": [

src/Stack.js

@@ -27,5 +27,6 @@ import {Transform} from 'vega-dataflow';
       field = _.field || one,
-      offset = _.offset,
-      groups, group, i, j, n, m,
-      max, off, scale, t, a, b, v;
+      stack = _.offset === Center ? stackCenter
+            : _.offset === Normalize ? stackNormalize
+            : stackZero,
+      groups, i, n, max;
 
@@ -37,15 +38,3 @@ // partition, sum, and sort the stack groups
   for (i=0, n=groups.length, max=groups.max; i<n; ++i) {
-    group = groups[i];
-    off = offset === Center ? (max - group.sum)/2 : 0;
-    scale = offset === Normalize ? (1/group.sum) : 1;
-
-    // set stack coordinates for each datum in group
-    for (b=off, v=0, j=0, m=group.length; j<m; ++j) {
-      t = group[j];
-      a = b; // use previous value for start point
-      v += field(t);
-      b = scale * v + off; // compute end point
-      t[y0] = a;
-      t[y1] = b;
-    }
+    stack(groups[i], max, field, y0, y1);
   }
@@ -56,2 +45,46 @@
 
+function stackCenter(group, max, field, y0, y1) {
+  var last = (max - group.sum) / 2,
+      m = group.length,
+      j = 0, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    t[y0] = last;
+    t[y1] = (last += Math.abs(field(t)));
+  }
+}
+
+function stackNormalize(group, max, field, y0, y1) {
+  var scale = 1 / group.sum,
+      last = 0,
+      m = group.length,
+      j = 0, v = 0, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    t[y0] = last;
+    t[y1] = last = scale * (v += Math.abs(field(t)));
+  }
+}
+
+function stackZero(group, max, field, y0, y1) {
+  var lastPos = 0,
+      lastNeg = 0,
+      m = group.length,
+      j = 0, v, t;
+
+  for (; j<m; ++j) {
+    t = group[j];
+    v = field(t);
+    if (v < 0) {
+      t[y0] = lastNeg;
+      t[y1] = (lastNeg += v);
+    } else {
+      t[y0] = lastPos;
+      t[y1] = (lastPos += v);
+    }
+  }
+}
+
 function partition(data, groupby, sort, field) {
@@ -78,3 +111,3 @@ var groups = [],
     for (i=0, s=0, n=g.length; i<n; ++i) {
-      s += field(g[i]);
+      s += Math.abs(field(g[i]));
     }
@@ -81,0 +114,0 @@ g.sum = s;

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increased by1.79%

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increased by3.44%

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