Set the map MinimumResolution ?

MarkCollins — Wed, 14 Jan 2015 19:57:21 GMT

In the javascript SDK/API is it possible to set the minimum resolution of the map? We do this in the WPF api to allow users to zoom in beyond the levels of detail specified in the basemap (so users can "zoom in" farther on more detailed feature layers being rendered on top of the basemap).

In WPF we do it like this:

theMap.MinimumResolution = 0.01;

Thanks,

Mark

Re: Set the map MinimumResolution ?

JeffJacobson — Thu, 15 Jan 2015 18:04:12 GMT

Use the lods option in the esri/Map constructor.

Re: Set the map MinimumResolution ?

MorganEverett — Tue, 10 Mar 2015 16:43:30 GMT

You won't be able to see the tiles, but if you add additional lods to the map when you create it you'll be able to zoom in past the basemap tiles.

I was able to do it with this, by adding a few other additional levels of detail, you can add whatever scale and resolution you would like.

var customLods = [];

/* Custom LODs */

var mylods = [{

"level": 0,

"resolution": 156543.03392800014,

"scale": 5.91657527591555E8

}, {

"level": 1,

"resolution": 78271.51696399994,

"scale": 2.95828763795777E8

}, {

"level": 2,

"resolution": 39135.75848200009,

"scale": 1.47914381897889E8

}, {

"level": 3,

"resolution": 19567.87924099992,

"scale": 7.3957190948944E7

}, {

"level": 4,

"resolution": 9783.93962049996,

"scale": 3.6978595474472E7

}, {

"level": 5,

"resolution": 4891.96981024998,

"scale": 1.8489297737236E7

}, {

"level": 6,

"resolution": 2445.98490512499,

"scale": 9244648.868618

}, {

"level": 7,

"resolution": 1222.992452562495,

"scale": 4622324.434309

}, {

"level": 8,

"resolution": 611.4962262813797,

"scale": 2311162.217155

}, {

"level": 9,

"resolution": 305.74811314055756,

"scale": 1155581.108577

}, {

"level": 10,

"resolution": 152.87405657041106,

"scale": 577790.554289

}, {

"level": 11,

"resolution": 76.4370282850732,

"scale": 288895.277144

}, {

"level": 12,

"resolution": 38.2185141425366,

"scale": 144447.638572

}, {

"level": 13,

"resolution": 19.1092570712683,

"scale": 72223.819286

}, {

"level": 14,

"resolution": 9.55462853563415,

"scale": 36111.909643

}, {

"level": 15,

"resolution": 4.77731426794937,

"scale": 18055.954822

}, {

"level": 16,

"resolution": 2.38865713397468,

"scale": 9027.977411

}, {

"level": 17,

"resolution": 1.19432856685505,

"scale": 4513.988705

}, {

"level": 18,

"resolution": 0.5971642835598172,

"scale": 2256.994353

}, {

"level": 19,

"resolution": 0.29858214164761665,

"scale": 1128.497176

}, {

"level": 20,

"resolution": 0.15,

"scale": 700

}, {

"level": 21,

"resolution": 0.1,

"scale": 500

}, {

"level": 22,

"resolution": 0.05,

"scale": 250

}, {

"level": 23,

"resolution": 0.01,

"scale": 100

}];

map = new Map("mapDiv", {

basemap: "streets",

center: [-120.327, 46.38],

zoom: 10,

lods: mylods

});

topic Set the map MinimumResolution ? in ArcGIS JavaScript Maps SDK Questions

Set the map MinimumResolution ?

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Re: Set the map MinimumResolution ?