Background
|
ModelBuilder is
an interface used to conduct
geographic processing or geoprocessing functions in ArcGIS.
It is part of ArcGIS’s core
technology. Visually, it looks a lot like a flow chart. The power of ModelBuilder is that
it allows users to automate geoprocessing functions on their data easily without writing
any code. The visual nature of the
interface makes it very easy to design
and follow workflows and makes it a great tool for teaching students.
What
is geoprocessing?
Geoprocessing
is based on a framework of data transformation. A typical geoprocessing
tool performs an operation on an ArcGIS dataset (such
as
a shapefile, feature class, raster, or
table) and produces a new dataset as the result
of the tool.
A geoprocessing tutorial can be found under the Tutorials
in ArcView 8.x/9.x on the
ESRI Canada website
– http://www.esricanada.com/english/3552.asp, if you need a review.
Why build models?
Building
a model helps you manage and automate
your geoprocessing
work flow. Managing processes
and their supporting data can be difficult
without the aid of a
model.
Advantages of ModelBuilder
• Visually representing
workflow (excellent
for students)
• Automating workflows
• Rerunning geoprocesses
unlimited times with different data and parameters
• Sharing models with other users
• Exporting models as
graphics for reports
It is easiest to think about ModelBuilder like a mathematical equation. There is an input or multiple inputs of data, an operation is performed
on the
input data that alters it in a certain way, and the data is returned as a
new output.
In this Tutorial, you will learn:
• What is ModelBuilder
• What you can do with ModelBuilder
• How you can create your own model using geoprocessing tools
• How to export a model as a
graphic or as a script to share with others
Download the Data
Download the Tutorial PDF
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