grapher: shift right when plotting past right edge

stepheneb · Mar 8, 2012 · f681b83 · f681b83
1 parent ec03712
commit f681b83
Showing 1 changed file with 13 additions and 3 deletions.
diff --git a/lib/simple-graph.js b/lib/simple-graph.js
@@ -212,8 +212,8 @@ function simpleGraph(elem, data, options) {
         return d ? "#ccc" : "#666";
       },
 
-      fx = xScale.tickFormat(options.datacount),
-      fy = xScale.tickFormat(options.datacount);
+      fx = xScale.tickFormat(10),
+      fy = xScale.tickFormat(10);
 
       // Regenerate x-ticks…
       var gx = vis.selectAll("g.x")
@@ -568,8 +568,18 @@ function simpleGraph(elem, data, options) {
 
   graph.set_data = function(_) {
     if (!arguments.length) return data;
+    var domain = xScale.domain(),
+        xextent = domain[1] - domain[0],
+        shift = xextent * 0.8;
     graph.generateDataPoints(_);
-    graph.update();
+    if (points.length > domain[1]) {
+      domain[0] += shift;
+      domain[1] += shift;
+      xScale.domain(domain);
+      graph.redraw();
+    } else {
+      graph.update();
+    }
     return graph;
   };