Building shapes

Question

For the World Topographical Map:
http://www.arcgis.com/home/webmap/vi...7a0e8c27ccc007

In the API, are we able to query the polygonal boundaries of nearby buildings/roads/green spaces?

That is, for any building/green space, can the API tell us a list of 2d points representing boundary vertices of the polygon defining the structure in question?

If not, what is the lowest level geometric data you have had access to?

Thanks

derekswingley1 · Answer

No, there's no way to get building data out of that basemap. It's provided as a base for your application and does not provide access to specific feature geometry or attributes.

BoHuang1 · Answer

Thank you. esri.geometry.Polygon(json) is probably more relevant.

Now, does our ArcGIS API supply a JSON object representing the polygonal boundary of an arbitrary building?

ESRI has the building boundary data, perhaps as shape files. It seems like they are not accessible to the developers?

Are the maps we see rendered on the server side and sent to us as images, or are the maps rendered on the client side? If the former, I see there is little reason to expose the building boundary data.

HemingZhu · Answer

For the World Topographical Map:
http://www.arcgis.com/home/webmap/vi...7a0e8c27ccc007

In the API, are we able to query the polygonal boundaries of nearby buildings/roads/green spaces?

That is, for any building/green space, can the API tell us a list of 2d points representing boundary vertices of the polygon defining the structure in question?

If not, what is the lowest level geometric data you have had access to?

Thanks

look into the api: http://help.arcgis.com/en/webapi/javascript/arcgis/help/jsapi/polygon.htm