Zoom to Graphics Layer?

Question

So I have a group of graphics displayed on map, does anyone know how to center and zoom to those graphics?

I guess I need to play with the Extent objects but do not have a clear mind to do this.

Thanks:D

ZachLiu1 · Answer

My bad:(. I typed GraphicUtils instead of GraphicsUtils when I loaded the module.

The featureSet seems not a graphics list though, I used featureSet.features now.

Thanks!:D

JasonZou · Answer

var extGraphics = GraphicsUtils.graphicsExtent(map.graphics.graphics);
Check extGraphics value after executing the above line. If the value is not what you expected, check map.graphics.graphics to see how many graphics there. To be safe, I would use featureSet to get the graphics array.

ZachLiu1 · Answer

I know this code works generally, but when I tied to use it after executing a query task, I can not set map extent to the returned graphics layer. Don't know what goes wrong.function showResults(featureSet){
                //remove all graphics on the maps graphics layer
                map.graphics.clear();

//Performance enhancer - assign featureSet array to a single variable.
                var resultFeatures = featureSet.features;

$.each(resultFeatures, function(index, featureItem){
                    featureItem.setSymbol(symbol);
                    featureItem.setInfoTemplate(infoTemplate);
                    map.graphics.add(featureItem);
                });

var extGraphics = GraphicsUtils.graphicsExtent(map.graphics.graphics);
                map.setExtent(extGraphics);
            }