An overview of ModelBuilder tools

ModelBuilder includes a collection of utility tools that support building flexible and powerful models.

Iterators

Iterators enable batch processing and help repeat a process or set of processes on a set of inputs.

Iterator	Description
For	Iterates over a starting and ending value by a given value.
Iterate Datasets	Iterates over datasets in a workspace or feature dataset.
Iterate Feature Classes	Iterates over feature classes in a workspace or feature dataset.
Iterate Feature Selection	Iterates over features in a feature class.
Iterate Field Values	Iterates over each value in a field.
Iterate Fields	Iterates fields in a table.
Iterate Files	Iterates over files in a folder.
Iterate Multivalue	Iterates over a list of values.
Iterate Layers	Iterates layers in a map.
Iterate Rasters	Iterates over rasters in a workspace.
Iterate Row Selection	Iterates over rows in a table.
Iterate Tables	Iterates over tables in a workspace.
Iterate Workspaces	Iterates over workspaces in a folder.
While	Iterates until a condition becomes true or until a condition comes false.

Utilities

ModelBuilder utilities include diverse operations focused on extending the capabilities of a model.

Utility	Description
Calculate Value	Returns a value based on a specified Python expression.
Collect Values	Collects output values from an iterator or converts a list of values into a single input. The output of Collect Values can be used as input to the Merge, Append, Mosaic, and Cell Statistics tools.
Get Field Value	Returns the value of the first row of a table for the specified field.
Parse Path	The Parse Path tool parses the input into its file, path, name, or extension. The output can be used as inline variable in the output name of other tools.
Select Data	The Select Data tool selects data in a parent data element such as a folder, geodatabase, feature dataset, or coverage.

Logical

Logical tools are a category of ModelBuilder utilities that help you control the flow of processes in a model and enable if-then-else branching logic.

Utility	Description
If Coordinate System Is	Evaluates the input data for the specified coordinate system.
If Data Exists	Evaluates if the specified data exists.
If Data Type Is	Evaluates if the input data matches the specified data type.
If Feature Type Is	Evaluates if a feature class is of the specified feature type.
If Field Exists	Evaluates if the input data has the specified fields.
If Field Value Is	Evaluates if the values in an attribute field match a specified value, expression, or second field.
If Row Count Is	Evaluates the row count of the input data and checks whether it matches a specified value.
If Selection Exists	Evaluates if the input data has a selection and if a certain number of records are selected.
If Spatial Relationship Is	Evaluates whether the inputs have a specified spatial relationship.
If Value Is	Evaluates an input value compared to a single value, a list of values, or a range of values using a defined comparison operator.
Merge Branch	Merges two or more logical branches into a single output.
Stop	Exits a model out of the iteration loop if the input values are set to true or set to false. For the set of input values, iteration will continue if all the inputs are true and stop if any one of the inputs is false. It is functionally similar to the While tool but is useful to stop a model if there is one While iterator in a model and no additional iterators can be added.