3D Analyst Tools ArcToolbox

Add Surface Information

How to use Add Surface Information Tool in ArcToolbox ArcMap ArcGIS ??

Add Surface Information

Add Surface Information Tool, Functional Surface Toolset, 3D Analyst Toolbox

Add Surface Information

Attributes features with spatial information derived from a surface.

1. Input Feature Class

The point, multipoint, polyline, or polygon features that define the locations for determining one or more surface properties.

2. Input Surface

The LAS dataset, mosaic, raster, terrain, or TIN surface used for interpolating z-values.

3. Output Property

The surface elevation property that will be added to the attribute table of the input feature class. The following list summarizes the available property keywords and their supported geometry types:

· Z—Surface Z values interpolated for the XY location of each single-point feature.

· Z_MIN—Lowest surface Z values in the area defined by the polygon, along the length of a line, or among the interpolated values for points in a multipoint record.

· Z_MAX—Highest surface elevation in the area defined by the polygon, along the length of a line, or among the interpolated values for points in a multipoint record.

· Z_MEAN—Average surface elevation of the area defined by the polygon, along the length of a line, or among the interpolated values for points in a multipoint record.

· SURFACE_AREA—3D surface area for the region defined by each polygon.

· SURFACE_LENGTH—3D distance of the line along the surface.

· MIN_SLOPE—Slope value closest to zero along the line or within the area defined by the polygon.

· MAX_SLOPE—Highest slope value along the line or within the area defined by the polygon.

· AVG_SLOPE—Average slope value along the line or within the area defined by the polygon.

4. Method (optional)

Interpolation method used in determining information about the surface. The available options depend on the data type of the input surface:

· BILINEAR—An interpolation method exclusive to the raster surface which determines cell values from the four nearest cells. This is the only option available for a raster surface.

· LINEAR— Default interpolation method for TIN, terrain, and LAS dataset. Obtains elevation from the plane defined by the triangle that contains the XY location of a query point.

· NATURAL_NEIGHBORS— Obtains elevation by applying area-based weights to the natural neighbors of a query point.

· CONFLATE_ZMIN— Obtains elevation from the smallest Z value found among the natural neighbors of a query point.

· CONFLATE_ZMAX— Obtains elevation from the largest Z value found among the natural neighbors of a query point.

· CONFLATE_NEAREST— Obtains elevation from the nearest value among the natural neighbors of a query point.

· CONFLATE_CLOSEST_TO_MEAN — Obtains elevation from the Z value that is closest to the average of all the natural neighbors of a query point.

5. Sampling Distance (optional)

The spacing at which z-values will be interpolated. By default, the raster cell size is used when the input surface is a raster, and the natural densification of the triangulated surface is used when the input is a terrain or TIN dataset.

6. Z Factor (optional)

The factor by which z-values will be multiplied. This is typically used to convert Z linear units to match XY linear units. The default is 1, which leaves elevation values unchanged. This parameter is disabled if the spatial reference of the input surface has a Z datum with a specified linear unit.

7. Pyramid Level Resolution (optional)

The z-tolerance or window-size resolution of the terrain pyramid level that will be used by this tool. The default is 0, or full resolution.

8. Noise Filtering (optional)

Excludes portions of the surface that are potentially characterized by anomalous measurements from contributing to slope calculations. Line features offer a length filter, whereas polygons provide an area filter. The value corresponding with either filtering option is evaluated in the linear units of the feature's coordinate system. Non-slope properties are not affected by this parameter.

· NO_FILTER—No noise filter will be used to limit the line segments or surface triangles factored into the slope calculations. This is the default.

· AREA <value>—Surface triangles with 3D areas less than the specified value will be excluded from contributing to slope calculations.

· LENGTH <value>— Line segments whose 3D length after being interpolated on the surface is shorter than the specified value will be excluded from contributing to slope calculations.