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?

- 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

- 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

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

Network Analyst layer

• One layer type for each solver

• Holds the analysis

- Analysis properties

- Inputs

- Outputs

Performing an analysis manually

Network Analyst

workflow

• 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

Storage & Management

What is Geoprocessing?

Storage & ManagementVisualization

Computation

=Geoprocessing

•Automating workflows

•Modeling & Analysis

Geoprocessing tool types

System tools Geoprocessing tool types

System tools

Model tools

System tools

Script tools

Model tools

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

Geoprocessing

• Managing turns

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

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

• 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

• 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

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

• 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 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

• Network analysis migration help

- 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

• Setting up a development environment (IDE)

- 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

• 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

• 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

• 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

• 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

• 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

Resources• Network Analyst code samples

- 10.2 and earlier

- ArcMap

- ArcGIS Pro

Resources• ArcGIS Network Analyst Extension Discussion Forum

Resources• Python for ArcGIS resource center

Employee of the Year Award

Melinda Morang

Esri presents the

Signature of Manager

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