3D Analyst Tools ArcToolbox

Contour List, Contour with Barriers Tools

Contour List

How to use Contour List Tool in ArcToolbox ArcMap ArcGIS ??

Contour List Tool

Contour List Tool, Raster Surface Toolset, 3D Analyst Toolbox

Contour List

Creates a feature class of selected contour values from a raster surface.

1. Input raster

The input surface raster.

2. Output polyline features

The output contour polyline features.

3. Contour values

List of z-values for which to create contours.

Contour with Barriers

How to use Contour with Barriers List Tool in ArcToolbox ArcMap ArcGIS ??

Contour with Barriers List

Contour with Barriers Tool, Raster Surface Toolset, 3D Analyst Toolbox

Contour with Barriers

Creates contours from a raster surface. The inclusion of barrier features allows you to independently generate contours on either side of a barrier.

1. Input Raster

The input surface raster.

2. Input Barrier Features (optional)

The input barrier features.

The features can be polyline or polygon type.

3. Output Contour Features

The output contour features.

4. Type of Contours (optional)

The type of contour to create.

· POLYLINES— The contour or isoline representation of the input raster.

· POLYGONS— Closed polygons representing the contours.

The current version of this tool only supports polyline output. If the polygon output option is used, it will be ignored and polyline output will be created.

5. File Containing Contour Value Specifications (optional)

The base contour, contour interval, indexed contour interval, and explicit contour values can also be specified via a text file.

6. Enter Explicit Contour Values Only (optional)

Only explicit contour values are used. Base contour, contour interval, and indexed contour intervals are not specified.

· Unchecked—The default, contour interval must be specified.

· Checked—Only explicit contour values are specified.

7. Base Contour (optional)

The base contour value.

Contours are generated above and below this value as needed to cover the entire value range of the input raster. The default is zero.

8. Contour Interval (optional)

The interval, or distance, between contour lines.

This can be any positive number.

9. Indexed Contour Interval (optional)

Contours will also be generated for this interval and will be flagged accordingly in the output feature class.

10. Explicit Contour Values (optional)

Explicit values at which to create contours.

11. Factor Applied to Raster Z-values (optional)

The unit conversion factor used when generating contours. The default value is 1.

The contour lines are generated based on the z-values in the input raster, which are often measured in units of meters or feet. With the default value of 1, the contours will be in the same units as the z-values of the input raster. To create contours in a different unit than that of the z-values, set an appropriate value for the z-factor. Note that it is not necessary to have the ground x,y and surface z-units be consistent for this tool.

For example, if the elevation values in your input raster are in feet, but you want the contours to be generated based on units of meters, set the z-factor to 0.3048 (since 1 foot = 0.3048 meter).