topic Invoke zoom/pan event using JS API in ArcGIS JavaScript Maps SDK Questions

Invoke zoom/pan event using JS API

HarshanaDias — Fri, 29 Jun 2012 03:13:50 GMT

Hi All,

How to invoke a the zoom or pan with out trigger an event. I mean with out mouse scroll or click on zoom panel, how can i invoke the same in code level using a JS function.

Thank You.

Re: Invoke zoom/pan event using JS API

PramodHarithsa1 — Fri, 29 Jun 2012 05:15:02 GMT

Hi All,

How to invoke a the zoom or pan with out trigger an event. I mean with out mouse scroll or click on zoom panel, how can i invoke the same in code level using a JS function.

Thank You.

If you are using a tiledmapservice then you can go for

centerAndZoom(mapPoint, levelOrFactor)

use 0.5 to zoom in twice as far and 2.0 to zoom out twice as far.

or else you you go with
map.setExtent(map.extent.expand(0.5));
for Zooming in and
map.setExtent(map.extent.expand(2));
for Zooming out.

For Pan you can use the functions panUp(),pannDown(), panLeft(), panRight()
You can find more about the map navigation hereand here

Mark this as an answer if it helped you.

Re: Invoke zoom/pan event using JS API

JohnnyPenet — Fri, 29 Jun 2012 06:30:44 GMT

Harshana,

You can find some more advanced examples on my blog http://jpenet.blogspot.be/2012/04/arcgis-javascript-api-using-basic-gis.html

Johnny