Map examples in progress

chapter_14/14_zoom_with_buttons.html

@@ -382,34 +382,18 @@
  scaleFactor = 1.5;
  break;
  case "out":
- scaleFactor = 0.5;
+ scaleFactor = 0.75;
  break;
  default:
  break;
  }
 
  //Transition to new zoom transform values
  //
- //This triggers a zoom event, specifying a new 'zoomIdentity'
- //with our new k value (and unchanged x and y values).
- //xxxx
+ //This triggers a zoom event, scaling by 'scaleFactor'
  //
  map.transition()
  .call(zoom.scaleBy, scaleFactor);
-
-
-
-
- //xxxxx
- //FIX CENTERING
-
- // .call(zoom.transform, d3.zoomIdentity.translate(-w/2, -h/2).scale(k).translate(w/2 + x, h/2 + y));
-
-
- // .translate(w/2, h/2)
- // .scale(0.25)
- // .translate(-center[0], -center[1]));
-
 
  });