topic Re: basemap zoom level vs scale in ArcGIS JavaScript Maps SDK Questions

basemap zoom level vs scale

ChelseaWu2 — Wed, 30 Aug 2023 15:49:29 GMT

I have an application uses basemapGallery, I just realized two of the basemaps have zoomlevel setting diffferent from the rest basemaps. Is it normal?
Is there anyway to make the same zoomlevel for all basemaps?

Re: basemap zoom level vs scale

Paco — Wed, 30 Aug 2023 16:19:00 GMT

Sorry, i dont have an answer, but I too have that issue with a custom "Home" button i built. the "view.zoom" level is different between my 2 basemaps. meaning clicking "Home" zooms differently depending on which basemap i have open.

Just echoing your issue. good luck!

Re: basemap zoom level vs scale

YirenWangDesigner — Fri, 01 Sep 2023 00:25:35 GMT

According to this API page:

Mapbox zoom levels are one value less than ArcGIS API zoom levels. The zoom level is based on a 256x256 pixel tile. Since Mapbox image tiles are 512x512 pixels, Mapbox zoom levels are 1 less than those of other APIs

I guess that's the reason of your problem.

Re: basemap zoom level vs scale

ChelseaWu2 — Thu, 07 Sep 2023 19:44:17 GMT

Thanks for the information. Your link is helpful.

But I am using only ArcGIS API.
Within ArcGIS API, depending on which base-map I loaded in, the zoom level is different.
I guess it was due to the basemap format
"The basemap styles service provides basemaps with layers formatted as either image tile layers or vector tile layers. When you use a basemap in your application, the scale of your zoom level will vary based on the type of layer the basemap uses. "