Set Zoom To Full Extent On Exsisting Graphics On Map Instead of Base Map

[BehrouzHosseini]

Using ArcGIS JavaScript API 3.19, I am simply adding some Point Graphics From a JSON object (Schools)  like below

var data = [{
 "SCHOOL_NAME": "King George Sec.",
 "LATITUDE": 49.2898,
 "LONGITUDE": -123.1364,
 "ADDRESS": "1755 Barclay St",
 "URLLINK": "http://www.vsb.bc.ca/schools/king-george"
 }, {
 "SCHOOL_NAME": "Britannia Sec.",
 "LATITUDE": 49.2752,
 "LONGITUDE": -123.0719,
 "ADDRESS": "1001 Cotton Drive",
 "URLLINK": "http://www.vsb.bc.ca/schools/britannia-secondary"
 }, {
 "SCHOOL_NAME": "Magee Sec.",
 "LATITUDE": 49.2286,
 "LONGITUDE": -123.1515,
 "ADDRESS": "6360 Maple St",
 "URLLINK": "http://www.vsb.bc.ca/schools/magee"
 },
....];‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

to the map. now I would like to add a functionality to Zoom to Full Extent of ONLY school points on the Map. Technically I add the `Navigation` class to the Map

require(["esri/toolbars/navigation"], function(Navigation) { /* code goes here */ });

and in HTML I have a simple button

<button id="show-all-schools">Show All Schools</button>

and in JS I have

$("#show-all-schools").on("click", function () {
            navToolbar = new Navigation(map);
            navToolbar.zoomToFullExtent();
          });

but this is setting the basemap in Full Extent state! Can you please let me know how to pass a parameter like points to zoom to cover entire points instead of basemap?

Thanks

[RobertScheitlin__GISP]

Behrouz,

   The Navigation widgets zoomToFullExtent is always going to zoom to the basemaps full extent:

Zoom to initial extent of base layer

Instead of using the Navigation toolbar you should just set the maps extent to the school layers extent.

Map | API Reference | ArcGIS API for JavaScript 3.19 | setExtent 

[BehrouzHosseini]

Thanks again Robert

I tried this way as the `schoolGraphicLayer` is my graphic layer added to the Map already

$("#show-all-schools").on("click", function () {
            map.setExtent(schoolGraphicLayer);
          });

but nothing is happening! Can you please let me know what I am doing wrong?

[RobertScheitlin__GISP]

Behrouz,

  So what you are doing is trying to the map extent to a featurelayer then.

This is more like it:

map.setExtent(schoolGraphicLayer.fullExtent, true);

[BruceGreen]

Thanks Robert,

I Update the code to

$("#show-all-schools").on("click", function () {
            map.setExtent(schoolGraphicLayer.fullExtent, true);
          });

But I am getting this error now!

[BehrouzHosseini]

Hi Robert did you have a chance to take a look at this issue? Thanks

[RobertScheitlin__GISP]

Did you check the value of the fullExtent property? The main reason for that error is that property is null.

[BehrouzHosseini]

Did you check the value of the fullExtent property?

Thanks for reply Robert but how can I check this? if this is about 

schoolGraphicLayer

I am sure that I have many graphics there already!

[RobertScheitlin__GISP]

add a line like this

console.info(schoolGraphicLayer.fullExtent);

[BehrouzHosseini]

You are right console.log() is returning undefined

can you please let me know why and how I can fix this? should I set an initial custom extent?