3D Analyst Tools ArcToolbox

Smooth Line and Polygon, Thin Road Network Tools

Smooth Line

How to use Smooth Line Tool in ArcToolbox ArcMap ArcGIS??

Smooth Line Tool

Smooth Line Tool, Generalization Toolset, Cartography Toolbox

Smooth Line

Smooths sharp angles in lines to improve aesthetic or cartographic quality.

1.  Input Features

The line features to be smoothed.

2.  Output Feature Class

The output feature class to be created.

3.  Smoothing Algorithm

Specifies the smoothing algorithm.

1. PAEK—Acronym for Polynomial Approximation with Exponential Kernel. It calculates a smoothed line that will not pass through the input line vertices. This is the default.
2. BEZIER_INTERPOLATION—Fits Bezier curves between vertices. The resulting lines pass through the vertices of the input lines. This algorithm does not require a tolerance. Bezier curves will be approximated in the output.

4.  Smoothing Tolerance

Sets a tolerance used by the PAEK algorithm. A tolerance must be specified, and it must be greater than zero. You can choose a preferred unit; the default is the feature unit. You must enter a 0 as a placeholder when using the BEZIER_INTERPOLATION smoothing algorithm.

5.  Preserve endpoint for closed lines (optional)

This is a legacy parameter that is no longer used. It was formerly used to specify whether endpoints of closed lines would be preserved. This parameter is still included in the tool's syntax for compatibility in scripts and models but is hidden from the tool's dialog box.

Specifies whether to preserve the endpoints of closed lines. This option works with the PAEK algorithm only.

1. Checked—Preserves the endpoint of a closed line. This is the default.
2. Unchecked—Smooths through the endpoint of a closed line.

6.  Handling Topological Errors (optional)

Specifies how topological errors (possibly introduced in the process, such as line crossing or overlapping) are handled.

1. NO_CHECK—Do not check for topological errors. This is the default.
2. FLAG_ERRORS—Flag topological errors, if any are found.
3. RESOLVE_ERRORS—Resolve topological errors, if any are found.

7.  Input Barriers Layers (optional)

Inputs containing features that will act as barriers for smoothing. The resulting smoothed lines will not touch or cross barrier features. For example, when smoothing contour lines, spot height features input as barriers ensure that the smoothed contour lines will not be smooth across these points. The output will not violate the elevation as described by measured spot heights.

Smooth Polygon

How to use Smooth Polygon Tool in ArcToolbox ArcMap ArcGIS??

Smooth Polygon Tool

Smooth Polygon Tool, Generalization Toolset, Cartography Toolbox

Smooth Polygon

Smooths sharp angles in polygon outlines to improve aesthetic or cartographic quality.

1.  Input Features

The line features to be smoothed.

2.  Output Feature Class

The output feature class to be created.

3.  Smoothing Algorithm

Specifies the smoothing algorithm.

1. PAEK—Acronym for Polynomial Approximation with Exponential Kernel. It calculates a smoothed line that will not pass through the input line vertices. This is the default.
2. BEZIER_INTERPOLATION—Fits Bezier curves between vertices. The resulting lines pass through the vertices of the input lines. This algorithm does not require a tolerance. Bezier curves will be approximated in the output.

4.  Smoothing Tolerance

Sets a tolerance used by the PAEK algorithm. A tolerance must be specified, and it must be greater than zero. You can choose a preferred unit; the default is the feature unit. You must enter a 0 as a placeholder when using the BEZIER_INTERPOLATION smoothing algorithm.

5.  Preserve endpoint for closed lines (optional)

This is a legacy parameter that is no longer used. It was formerly used to specify whether endpoints of closed lines would be preserved. This parameter is still included in the tool's syntax for compatibility in scripts and models but is hidden from the tool's dialog box.

Specifies whether to preserve the endpoints of closed lines. This option works with the PAEK algorithm only.

1. Checked—Preserves the endpoint of a closed line. This is the default.
2. Unchecked—Smooths through the endpoint of a closed line.

6.  Handling Topological Errors (optional)

Specifies how topological errors (possibly introduced in the process, such as line crossing or overlapping) are handled.

1. NO_CHECK—Do not check for topological errors. This is the default.
2. FLAG_ERRORS—Flag topological errors, if any are found.
3. RESOLVE_ERRORS—Resolve topological errors, if any are found.

7.  Input Barriers Layers (optional)

Inputs containing features that will act as barriers for smoothing. The resulting smoothed lines will not touch or cross barrier features. For example, when smoothing contour lines, spot height features input as barriers ensure that the smoothed contour lines will not be smooth across these points. The output will not violate the elevation as described by measured spot heights.

Thin Road Network 

How to use Thin Road Network Tool in ArcToolbox ArcMap ArcGIS??

Thin Road Network Tool

Thin Road Network Tool, Generalization Toolset, Cartography Toolbox

Thin Road Network

Generates a simplified road network that retains connectivity and general character for display at a smaller scale.

This tool does not generate new output. It assigns values in Invisibility Field in the input feature classes to identify features that are extraneous and can be removed from view to result in a simplified, yet representative, collection of roads. No feature geometry is altered or deleted.

Features are not actually deleted by Thin Road Network. To actually remove features, consider using the Trim Line tool.

The resulting simplified road collection is determined by feature significance, importance, and density. Segments that participate in very long itineraries across the extent of the data are more significant than those required only for local travel. Road classification, or importance, is specified by the Hierarchy Field parameter. The density of the resulting street network is determined by the Minimum Length parameter, which corresponds to the shortest segment that is visually sensible to show at scale.

Learn more about how Thin Road Network works and see a table of recommended minimum length values to use as a starting point.

A warning is raised if the input features are not in a projected coordinate system. This tool relies on linear distance units, which will create unexpected results in an unprojected coordinate system. It is strongly suggested that you run this tool on data in a projected coordinate system to ensure valid results. An error is raised and the tool will not process if the coordinate system is missing or unknown.

1.  Input Road Features

The input linear roads that should be thinned to create a simplified collection for display at smaller scales.

2.  Minimum Length

An indication of the shortest road segment that is sensible to display at the output scale. This controls the resolution, or density, of the resulting road collection. If the units are in point, millimeters, centimeters, or inches, the value is considered in page units and the reference scale is taken into account.

3.  Invisibility Field

The field that stores the results of the tool. Features that participate in the resulting simplified road collection have a value of 0 (zero). Those that are extraneous have a value of 1. A layer definition query can be used to display the resulting road collection. This field must be present and named the same for each input feature class.

4.  Hierarchy Field

The field that contains hierarchical ranking of feature importance, where 1 is very important and larger integers reflect decreasing importance. A value of 0 forces the feature to remain visible in the output collection. This field must be present and named the same for each input feature class. Hierarchy values equal to NULL are not accepted and will raise an error.