Network Analyst: Automating Workflows with …...• Include the network analysis workflow as part...

Network Analyst:

Automating Workflows with

Geoprocessing

Melinda Morang

Patrick Stevens

•Who are we?

-Network Analyst Product Engineers

Network Analyst: Automating Workflows with Geoprocessing

• Who are you?


• Who are you?

- Are you current Network Analyst users?


• Who are you?


- Are you current geoprocessing users?


• Who are you?



- Have you made geoprocessing models?


• Who are you?



- Have you made geoprocessing models?

- Have you made geoprocessing Python scripts?


• Why should you use geoprocessing?



- Automate repetitive tasks




- Reduce mistakes




- Reduce mistakes

- Share analysis capabilities




- Reduce mistakes


- Increase efficiency




- Reduce mistakes


- Increase efficiency

- Expand capabilities of ArcGIS



Topics to be covered

ArcGIS Network Analyst extension concepts




Geoprocessing and network analysis





ModelBuilder: Models and model tools






Python: Scripts and script tools







Support and resources



ArcGIS Network Analyst Extensionsolvers

Service Area

Create drive-time areas

Location-Allocation

Choose best facilities

Vehicle Routing

Problem

Plan routes

Route

Directions

Closest Facility

Find nearest

Origin-Destination

Cost Matrix

Generate origin destination

cost matrix


Network dataset



Network Analyst layer



• One layer type for each solver


• One layer type for each solver

• Holds the analysis

- Analysis properties

- Inputs

- Outputs


Performing an analysis manually

Network Analyst

workflow


Demo

• Steps for network analysis:

-Make an analysis layer

-Add locations

-Solve

-Work with results


TakeawaysDemo: Network Analyst Workflow


What is

Geoprocessing?

ArcGIS Help:

The geoprocessing framework

http://resources.arcgis.com/en/help/main/10.1/index.html


Storage & Management

What is Geoprocessing?


Storage & ManagementVisualization



Storage & ManagementVisualization

Computation



Computation

=Geoprocessing

•Automating workflows

•Modeling & Analysis



Geoprocessing tool types


System tools Geoprocessing tool types


System tools

Model tools



System tools

Script tools

Model tools



Model

Single tool

Chain tools

Using Geoprocessing tools

Python window

Tool dialog

Script


Network Analyst

system tools


• Performing Network Analysis

Network Analyst

system tools



• Building networks

Network Analyst

system tools




• Managing turns

Network Analyst

system tools


Using

Geoprocessing



• Managing turns


Using

Geoprocessing



• Managing turns

• Publishing services

Building

Geoprocessing

Models


ArcGIS Help:

What is ModelBuilder?



Geoprocessing

Models


Geoprocessing

Models

• Author using Model Builder


Geoprocessing

Models

• Chain tools to perform a

workflow


Geoprocessing

Models

• Use models like ArcToolbox

tools


Geoprocessing

Models

• Use models within other

models


Geoprocessing

Models

• Apply all Model Builder

techniques to network analysis

models

Performing a network analysis

in Model Builder

Sharing a model as a tool

Automating

workflows with

geoprocessing

models


Demo

• Automate workflows with Model Builder

• Make inputs and outputs model parameters

• Run your model as a tool

• Share models and projects


TakeawaysDemo: Automating Workflows with Geoprocessing Models

• When running models as tools…

- The output network analysis layer should be a model parameter- This will add the layer to the Table of Contents


Visualizing analysis results in ArcMap

• Use your analysis result as an input to another tool

- The Select Data tool accesses individual sublayers


Post-processing your analysis

Automating

workflows with

geoprocessing

models


Demo

Working with inputs and outputs

• Include the network analysis workflow as part of

a larger workflow

• Use the Select Data tool to access sublayers

• Work with external data like CSV files


TakeawaysDemo: Automating Workflows with Geoprocessing Models


Writing Python

Scripts

ArcGIS Help:

What is Python?



Python scripts


Python scripts

• Conditional logic


Python scripts


• Loops


Python scripts


• Loops

• Cursors, creating geometry


Python scripts


• Loops

• Cursors, creating geometry

• Built-in and third party modules


Python scripts

• ArcPy site package


Python scripts


- Network Analyst module


Python scripts



- Other geoprocessing tools


Python scripts



- Other geoprocessing tools

- Other useful functions and

classes

- Describe


Python scripts

• Simplify access to Network

Analyst functionality from

Python

arcpy.na


Python scripts

• Simplify access to Network

Analyst functionality from

Python

• Edit the analysis properties of

network analysis layers

- No need to re-create layers

- Speed up execution

- Simplify script logic

arcpy.na


Python Script: Basic Building Blocks


Import the arcpy site package


Check out Network Analyst Extension license


Create/edit a Network Analysis layer


Add locations to analysis classes


Run the analysis


Use the results


Edit the properties on an existing layer


Access sublayer with ListLayers

• Use sublayers as input to other tools (CopyFeatures, Join, Buffer, etc.).



• Use sublayers as input to other tools (CopyFeatures, Join, Buffer, etc.).

• Use a SearchCursor to access the rows within a sublayer.




Field mapping


Set the output workspace

Python in ArcGIS Pro vs. ArcMap


• Pro: python 3.4

• ArcMap: python 2.7



• Pro: python 3.4

• ArcMap: python 2.7

• General migration help

- http://pro.arcgis.com/en/pro-app/arcpy/get-started/python-

migration-for-arcgis-pro.htm



http://pro.arcgis.com/en/pro-app/arcpy/get-started/python-migration-for-arcgis-pro.htm

• Network analysis migration help

- http://pro.arcgis.com/en/pro-app/arcpy/network-

analyst/migratingfrom10xarcpynetworkanalyst.htm



http://pro.arcgis.com/en/pro-app/arcpy/network-analyst/migratingfrom10xarcpynetworkanalyst.htm

• Network analysis migration help

- http://pro.arcgis.com/en/pro-app/arcpy/network-

analyst/migratingfrom10xarcpynetworkanalyst.htm

• Unsupported and deprecated tools

• Changes for working with layer object



http://pro.arcgis.com/en/pro-app/arcpy/network-analyst/migratingfrom10xarcpynetworkanalyst.htm

• Setting up a development environment (IDE)

- http://pro.arcgis.com/en/pro-app/arcpy/get-started/installing-

python-for-arcgis-pro.htm



http://pro.arcgis.com/en/pro-app/arcpy/get-started/installing-python-for-arcgis-pro.htm

Performing a network analysis

with a python script

Automating

workflows with

python scripts

Demo

• Run any geoprocessing workflow in stand-alone python

• Find Code samples in the tool help

• Run simple python commands in the python window


TakeawaysDemo: Automating Workflows with Python Scripts


ArcGIS Help:

What is a script tool?

Building Script

Tools


• Work with your scripts through a user interface


Script tools

• Work with your scripts through a user interface

• Use Script tools like any other tool within ArcToolbox

- Use script tools in models and vice versa


Script tools

• If a network analysis layer is the output use arcpy.SetParameterAsText(…)


Add outputs from script tool to ArcMap

Create a script tool to provide

a UI for a Python script

Use tool validation to

customize the UI

Creating a

script tool


Demo

• Provide a user interface for python scripts by making a

script tool

• Use derived output and arcpy.SetParameterAsText() to add results to the map

• Use tool validation to customize your script tool’s user

interface


TakeawaysDemo: Creating a Script Tool

Summary


Summary


• Use the geoprocessing

framework for network analyses

- Network Analyst Tools

- Models and Model tools

- Script and Script tools

Summary


• Automate workflows

Summary


• Incorporate network analysis in

larger process


Resources


Resources• Network Analyst tutorials

- ArcMap

- ArcGIS Pro

http://desktop.arcgis.com/en/arcmap/latest/extensions/network-analyst/about-the-network-analyst-tutorial-exercises.htm

http://pro.arcgis.com/en/pro-app/help/analysis/networks/route-tutorial.htm


Resources• Network Analyst code samples

- 10.2 and earlier

- ArcMap

- ArcGIS Pro

http://resources.arcgis.com/en/help/main/10.2/index.html#//004800000002000000

http://desktop.arcgis.com/en/arcmap/latest/tools/network-analyst-toolbox/an-overview-of-the-network-analyst-toolbox.htm

http://pro.arcgis.com/en/pro-app/tool-reference/network-analyst/an-overview-of-the-network-analyst-toolbox.htm


Resources• ArcGIS Network Analyst Extension Discussion Forum

https://geonet.esri.com/community/gis/analysis/network-analyst


Resources• Python for ArcGIS resource center

http://desktop.arcgis.com/en/analytics/python/

Employee of the Year Award

Melinda Morang

Esri presents the

to

Signature of Manager

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