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ArcGIS RESTful Interaction with Python: Easy Automation and Web Mapping

Dive into the new ArcGIS Python API that simplifies interactions with EsriRESTful technologies. Learn about scripting, automation, iPython Notebooks, webmap visualization, and more. Understand the basics of REST, its benefits, and how it differs from SOAP for connecting to server endpoints. Explore the development pattern, authentication, URL construction, and JSON payload handling. Discover resources for code implementation and tools like Fiddler for monitoring requests. Get ready to code with examples and scripts provided in the iPython notebook.

danielbrandt
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ArcGIS RESTful Interaction with Python: Easy Automation and Web Mapping

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  1. Python and REST Kevin Hibma

  2. [NEW] ArcGIS Python API • New API that makes interacting with EsriRESTful technologies easy • Going into beta, released with ArcGIS 10.5 • Scripting and Automation • iPython Notebooks • View webmaps, visualize results • Not an arcpy replacement.

  3. [NEW] ArcGIS Python API >> conda install –c esri arcgis >> python (optionally) >> conda install jupyter from arcgis.gis import * gis = GIS(“http://www.arcgis.com”, “xxxx”, “xxxx”) gis.groups.list() gis.content.search(“Chiptole”)

  4. What is REST? Why REST? • REST stands for Representational State Transfer. (It is sometimes spelled "ReST".) It relies on a stateless, client-server, cacheable communications protocol -- and in virtually all cases, the HTTP protocol is used. REST is an architecture style for designing networked applications. • > rest.elkstein.org/2008/02/what-is-rest.html • Ummm what? (search has a lot of similar definitions) • For this session we’ll use the term REST to loosely describe how we (python scripts) connect and talk to a server / web service end point. • Why? Because its easier than SOAP! (another way to talk across the internet)

  5. What can I do? • ArcGIS Server • Consume, create, update, administer • ArcGIS Online (arcgis.com) • Consume, create, update, configure • Web services (both ArcGIS and not-ArcGIS) • Consume, update (with permission)

  6. Development pattern • (optionally) Authenticate (get a token) depending on operation • Build URLs to hit different end points • http://server/arcgis/rest/service/QUERY • Most requests are POST (vs. GET) • Send and receive a JSON payload • A REST service could send data back in another format

  7. Time for some code

  8. What to put where? (how do I know what a request needs and what a response gives) • Read API help doc • http://esriurl.com/restapi • Use Fiddler • With fiddler running, perform actions in a browser or other client inspect requests / response • WebBrowsers have built in consoles to watch requests URL Query parameters Response

  9. Links • Documentation and examples • http://esriurl.com/scriptRESTAPI • Ready to go tools, scripts and command line • http://esriurl.com/AGStools • Code as iPython notebook • https://github.com/khibma/PythonREST_UC2015

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