I am learning how to access US Census data through Census API and make the data display on web application as a map. Here is their website: Developers
Is there any instruction / sample codes that I can study? I guess my question is: how to get information without using map service url? Since ESRI JavaScript API always goes to create a map using map service first, and how to access online data without a map service? Is JavaScript API the right tool to do this in web map application? Thanks!
It looks like they might actually have a map service: Census TIGERweb GeoServices REST API
These map services do not contain all the content such population, income. I guess what we need is to query all the topics. Does ESRI currently have any tool to use Census API? Thanks!
You'll need to write code that converts the output from the Census API into a GraphicsLayer.
Check out the Census ACS datasets curated by the Esri Living Atlas team as ready to use maps and layers:
https://www.arcgis.com/home/group.html?id=16b3a5ac36834ed6b3f16261d9a988ea
You can learn more about these items here:
Mapping American Community Survey (ACS) Data Just Got Easier