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centerAndZoom() Zooms all the way out

EdwardRozum

Using the 3.3 compact javascript library, I have had an issue using center and zoom when my basemap is dynamic. When it is cached, it seems to work correctly. Has anyone seen this before?

var symbol = new esri.symbol.PictureMarkerSymbol('css/images/Pin.png', 32, 32);
    var point = esri.geometry.geographicToWebMercator(new esri.geometry.Point(attributes.long, attributes.lat));
    var graphic = new esri.Graphic(point, symbol, attributes, infoTemplate);

    //Add to map and zoom
    map.graphics.add(graphic);
    map.centerAndZoom(point, 9);
    map.infoWindow.setFeatures([graphic]);

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Accepted answers

ReneRubalcava

The Map::centerAndZoom method behaves differently based on your basemap data.
http://help.arcgis.com/EN/webapi/javascript/arcgis/jsapi/map.html#centerAndZoom
So in reference to the second argument in that function:

When using an ArcGISTiledMapServiceLayer, the map is zoomed to the level specified. When using a DynamicMapServiceLayer, the map is zoomed in or out by the specified factor. For example, use 0.5 to zoom in twice as far and 2.0 to zoom out twice as far.

So when you have a Tiled basemap and you use map.centerAndZoom(point, 9), it will zoom to the 9th level of your maps level of details.
When you have a dynamic basemap and use map.centerAndZoom(point, 9), you are zooming out by a factor of 9, that's global status.

So you'll want to adjust how you use it based on your basemap.

All comments

ReneRubalcava

When using an ArcGISTiledMapServiceLayer, the map is zoomed to the level specified. When using a DynamicMapServiceLayer, the map is zoomed in or out by the specified factor. For example, use 0.5 to zoom in twice as far and 2.0 to zoom out twice as far.

EdwardRozum

Ok that makes sense to me. I'll adjust as needed. Thanks for the quick reply. I appreciate the help.

JohnGravois

perhaps you could mark Rene's post as an answer?

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