From the course: Learning ArcGIS Python Scripting (2018)
Join today to access over 22,700 courses taught by industry experts or purchase this course individually.
Use the foreach loop - ArcGIS Tutorial
From the course: Learning ArcGIS Python Scripting (2018)
Use the foreach loop
- [Instructor] A list loop loops through a list of values, executing a section of code once for each value in the list. This type of loop is especially powerful when working with ArcGIS and GIS data. Because ArcPy has a set of list functions, they return lists of things so the for loop can easily execute code on that list. The ArcPy list functions can list FeatureClasses, Layers, BrokenDataSources, DataFrames, and even Files in a workspace. I'm in IDLE and I have a script that I've already started here. I'll use this to demonstrate how to use a list to work through the return elements from a list function in ArcPy. I'll write a script that lists out all of the layers in a map document. First, I'll need to import the ArcPy module. Next, I'll instantiate the map document object. I'll touch the map document and make an open connection to it. I'll use an mxd variable. That's just a name I chose, mxd, to hold the map document object. You create the map document object by using the…
Practice while you learn with exercise files
Download the files the instructor uses to teach the course. Follow along and learn by watching, listening and practicing.
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.