3D Analyst Tools ArcToolbox

Dissolve, Eliminate and Eliminate Polygon Part Tools

Dissolve

How to Dissolve Tool in ArcToolbox ArcMap ArcGIS??

Dissolve Tool

Path to access the tool

:

Dissolve Tool, Generalization Toolset, Data Management Tools Toolbox

 

Dissolve

Aggregates features based on specified attributes.

1.    Input Features

The features to be aggregated.

2.    Output Feature Class

The feature class to be created that will contain the aggregated features.

3.    Dissolve_Field(s) (optional)

The field or fields on which to aggregate features.

The Add Field button, which is used only in ModelBuilder, allows you to add expected fields so you can complete the dialog box and continue to build your model.

4.    Statistics Field(s) (optional)

The numeric field containing attribute values used to calculate the specified statistic. Multiple statistic and field combinations may be specified. Null values are excluded from all statistical calculations.

Text attribute fields can be summarized using first and last statistics. Numeric attribute fields can be summarized using any statistic.

Available statistics types are as follows:

1. SUM—Adds the total value for the specified field.
2. MEAN—Calculates the average for the specified field.
3. MIN—Finds the smallest value for all records of the specified field.
4. MAX—Finds the largest value for all records of the specified field.
5. RANGE—Finds the range of values (maximum minus minimum) for the specified field.
6. STD—Finds the standard deviation on values in the specified field.
7. COUNT—Finds the number of values included in statistical calculations. This counts each value except null values. To determine the number of null values in a field, create a count on the field in question, create a count on a different field that does not contain null values (for example, the OID if present), and subtract the two values.
8. FIRST—Finds the first record in the input and uses its specified field value.
9. LAST—Finds the last record in the input and uses its specified field value.

5.    Create multipart features (optional)

Specifies whether multipart features are allowed in the output feature class.

1. Checked—Specifies multipart features are allowed. This is the default.
2. Unchecked—Specifies multipart features are not allowed. Instead of creating multipart features, individual features will be created for each part.

6.    Unsplit lines (optional)

Controls how line features are dissolved.

1. Unchecked—Lines are dissolved into a single feature. This is the default.
2. Checked—Lines are only dissolved when two lines have an end vertex in common.

Eliminate

How to Eliminate Tool in ArcToolbox ArcMap ArcGIS??

Eliminate Tool

Path to access the tool

:

Eliminate Tool, Generalization Toolset, Data Management Tools Toolbox

 

Eliminate

Eliminates polygons by merging them with neighboring polygons that have the largest area or the longest shared border. Eliminate is often used to remove small sliver polygons that are the result of overlay operations, such as Intersect or Union.

1.    Input Layer

The layer whose polygons will be merged into neighboring polygons.

2.    Output Feature Class

The feature class to be created.

3.    Eliminating polygon by border (optional)

These options specify which method will be used for eliminating features.

1. Checked—Merges a selected polygon with a neighboring unselected polygon by dropping the shared border. The neighboring polygon is the one with the longest shared border. This is the default.
2. Unchecked—Merges a selected polygon with a neighboring unselected polygon by dropping the shared border. The neighboring polygon is the one with the largest area.

4.    Exclusion Expression (optional)

An SQL expression used to identify features that will not be altered.

5.    Exclusion Layer (optional)

An input polyline or polygon feature class or layer that defines polygon boundaries, or portions thereof, that should not be eliminated.

Eliminate Polygon Part

How to Eliminate Polygon Part Tool in ArcToolbox ArcMap ArcGIS??

Eliminate Polygon Part

Path to access the tool

:

Eliminate Polygon Part Tool, Generalization Toolset, Data Management Tools Toolbox

 

Eliminate Polygon Part

Creates a new output feature class containing the features from the input polygons with some parts or holes of a specified size deleted.

1.    Input Features

The input feature class or layer whose features will be copied to the output feature class, with some parts or holes eliminated.

2.    Output Feature Class

The output polygon feature class containing the remaining parts.

3.    Condition (optional)

Specify how the parts to be eliminated will be determined.

1. AREA—Parts with an area less than that specified will be eliminated.
2. PERCENT—Parts with a percent of the total outer area less than that specified will be eliminated.
3. AREA_AND_PERCENT—Parts with an area and percent less than that specified will be eliminated. Only if a polygon part meets both the area and percent criteria will it be deleted.
4. AREA_OR_PERCENT—Parts with an area or percent less than that specified will be eliminated. If a polygon part meets either the area or percent criteria, it will be deleted.

4.    Area (optional)

Eliminate parts smaller than this area.

5.    Percentage (optional)

Eliminate parts smaller than this percentage of a feature's total outer area.

6.    Eliminate contained parts only (optional)

Determines what parts can be eliminated.

1. Checked - Only parts totally contained by other parts can be eliminated. This is the default.
2. Unchecked - Any parts can be eliminated.